Mazda Mazda6 Mazda Mazda6

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Mazda Mazda6 repairs by problem area

Engine (36%)

Transmission and Drivetrain (9%)

Brakes and Traction Control (10%)

Suspension and Steering (11%)

Electrical and Air Conditioning (19%)

Paint, Rust, Leaks, Rattles, and Trim (10%)

Other (6%)

Chart based on 1288 repairs.

Mazda Mazda6 engine repair cost distribution

$2500+ (4%)

$1000 - $2499 (12%)

$500 - $999 (25%)

$100 - $499 (46%)

< $100 (13%)

Chart based on 284 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.

2014 Mazda Mazda6 4dr Sedan

184-horsepower 2.5L I4 6-speed shiftable automatic FWD

3000 mi Low oil pressure light came on. Took to dealer after seeing it twice. Oil pump failure. Replaced under warranty. Part sent to Mazda. 
12000 mi engine replaced after unsuccessful repair attempts 
2000 mi False Reading of Thermostat caused a check engine light, Mazda has issued a reflash to fix the problem. Took the car in for this reflash. 
54000 mi

US $580
Water pump was leaking. 
74000 mi

US $60
Slight miss occurred. Replaced spark plugs 

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2014 Mazda Mazda6 4dr Sedan

184-horsepower 2.5L I4 6-speed manual FWD

2000 mi Engine seemed to be consuming oil. Told by dealer that the engine oil may have been low at time of manufacture/delivery. Dealer did an oil change and will continue to monitor. 

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2010 Mazda Mazda6 4dr Sedan

170-horsepower 2.5L I4 6-speed manual FWD

29000 mi Engine has a vibration/runs rough around 2000 RPM. 
41300 mi

C $310
I went to my old shop, Honda Gifford Automotive, in Oct and they immediately said belt tensioner about $310. Did it and viola no noise. Dealer will not refund and Mazda said how do we know they were not right about the clutch. 
55500 mi

C $100
Failed O2 Sensor 

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2010 Mazda Mazda6 4dr Sedan

170-horsepower 2.5L I4 5-speed shiftable automatic FWD

135000 mi

US $141
Needed a power train belt replaced. 
40880 mi

C $325
Replaced faulty (frozen & cracked) module, which managed fuel to fuel injectors. 
86300 mi Replaced both Intake control valves under pzev warranty. Check engine light was on 
31000 mi

US $607
Oil leak due to oil pan gasket tear. Covered by CPO warranty. 
13000 mi very slight squeak present when car at rest and rocked back and forth. Dealer diagnosed noise from exhaust hanger and replaced the hanger per tsb 
46000 mi

US $200
Exhaust "donut" between manifold and front pipe failed again - replaced the donut and mounting hardware to eliminate squeaking/chirping at idle. 
32860 mi accessory drive belt failed on the highway suddenly. 
40920 mi

C $120
Twice in several weeks the car lost power, the engine stuttered and trouble lights on the dash flickered. After this the car would not start. After a half hour wait the car started and ran fine. 
44600 mi

C $10
Engine stuttered and died, afterwards it works fine no engine codes. Last visit to the dealer they replaced a mass air flow sensor, problem occurred again. Based on research i cleaned the throttle plate/body. Will wait an see if it worked. 
49160 mi stalled while stopping,started normally. Occurred 3 times before and would not restart for 10-15 mins. shop found no problem the 1st time 2nd time replaced Mass air sensor not fixed. i Cleaned throttle plate seems to have improved.Not fixed. 
76000 mi Transmission fluid and oil leak. 
69000 mi Some issue with the exhaust flange. It doesn't seem to be fixed. I may have to take it back. 
71300 mi Same noise as earlier from Exhaust. Got it checked again. Left the car overnight with the dealer. They couldn't figure out. Car came back the way it went in but the noise went away for some time. Guess they did something and didn't disclose. 
78000 mi

US $300
Drive belt and tensioner were worn out. Drive belt was cracked. Tensioner was noisy. Had them replaced. P04xx error. Gas cap replacement due to fuel vapors escaping from tank. 
108000 mi exhaust leak and cracked bolt near tailpipe 
132000 mi

US $500
Water pump belt tensioner siezed up, causing the engine to over heat. Repair included replacing the tensioner and belt as well as performing a cooling system flush. 
44000 mi

US $300
Bad O2 Sensor. I attempted to replace the sensor but it was stuck on so badly that they had to drill and retap to replace it. 

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2010 Mazda Mazda6 4dr Hatch

turbocharged 161hp 2.2L I4 Diesel 6-speed manual FWD

90900 mi

€2600
Blown engine due to failure of #4 injector washer 

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2009 Mazda Mazda6 4dr Sedan

272-horsepower 3.7L V6 6-speed shiftable automatic FWD

8000 mi Apparently there is a TSB for a purge valve? My car sounded like a diesel from when I took delivery of it, more so from outside the car when idling. Loud tapping/knocking sound. Parts dept diagnosed it as a purge valve. To be replaced under warranty. 
9000 mi Excessive noise at idle, diagnosed as a purge valve, parts were ordered and took 4 weeks to arrive, dealer installed/replaced parts, problem solved. 
15000 mi Once car is warmed up I have an erratic idle. Dealer checked fuel pressure and fuel maps and cleaned throttle body. Sent me home. Problem resurfaced next day. 
15600 mi Car returned for erratic idle. Dealer checked fuel pressure, replaced fuel pump relay, replaced throttle body, replaced alternator, reset fuel trims and replaced the powertrain control module. Idle is fixed and now rock steady. 
93000 mi

US $1200
Air would intermittantly blow hot. Replaced radiator and tstat. Didnt repair...replaced fan module. 
2000 mi Fuel pump replaced 
24000 mi new electrical circuits(???) to stop dash and nav lights from going out after car wash or heavy rains. also key fob not recognized...fixed. Also adjusted auto headlights to most sensitive position 
71000 mi

US $20
Rear left/driver side exhaust bolts sheared off. Muffler and pipes are fine. Bolts needed to be removed and replaced. Maybe due to salt thaw of the midwest. 
38000 mi

US $360
Purge valve solenoid replaced. Part no. CA07-20-370H 
44000 mi

US $400
Throttle Body Harness replaced. 

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2009 Mazda Mazda6 4dr Sedan

170-horsepower 2.5L I4 6-speed manual FWD

1240 mi PCM flash 
5000 mi brought car in again for hesitation/misfire issue. Mazda put data recorder on it, but claims that engine performing as designed. Possibily proceeding with lemon law claim as car appears to have design defect.  
9920 mi The check engine light would not go out and engine would idle at different revs while in park and sounded like a diesel. Dealer diagnosed and fixed the problem by reflashing the ECM. 

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2009 Mazda Mazda6 4dr Sedan

170-horsepower 2.5L I4 5-speed shiftable automatic FWD

53000 mi I had noticed the smell of fuel near the right rear side, by the door. Dealer did a number of checks and tests, could't find anything wrong. I paid for 1/2 hour labor. The smell is still there, however, and I will be returning. 
45880 mi Just changing the computer parts 
45600 mi Ticking Noise from purge valve, according to service ticket. Previously, in dealership 26 days for Cam ticking noise. Not sure what was really going on this time. Hired Lemon Lawyer. 
9300 mi Engine light on. Part related to emissions control replaced. Engine light is off now. 
30000 mi The check engine light would not go out. Dealer diagnosed emission system issue and fixed the problem. 
47000 mi

US $300
Check engine light will not stay off after numerous trips to Mazda dealers over the past four years. 
8700 mi High pitched squeaking noise from the water pump. 
48000 mi

US $1200
Engine broke two connecting rods and pistons; block was cracked down the middle. 
86000 mi The valve cover gasket was leaking oil so it was replaced. 
41000 mi

US $100
Muffler clamp and securing bolt fell off. Had to be replaced. Caused muffler to rattle. 
3720 mi

C $50
car hesitating, needed computer update 
10540 mi transmission chip reflash, car shifts more smoothly now; recall 
28520 mi Mazda exhaust system! A 5o cent bolt holding together a gasket connecting muffler to exhaust system broke. Dealer charged one hour labour because they had to punch out old bolt. 
60000 mi

US $1200
A unit failed that allowed the keys to operate the car. It was deemed unsafe to drive. Part had to be ordered. 
77000 mi

US $350
muffler sounded loud. There was a loose part that had to be replaced not the muffler or pipes...i.e clamps/bolts 
84300 mi

US $86
Rattle coming from under the car during acceleration. Determined to be rotted heat shield. This part was determined to be non essential and the part was removed and disposed of. 

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2008 Mazda Mazda6 4dr Sedan

156-horsepower 2.3L I4 5-speed shiftable automatic FWD

100000 mi

US $150
Replaced failed valve cover gasket. 
48000 mi

US $50
ECM Reset 
72000 mi

US $400
Loud sound and little more vibration than usual at start. I checked this with 2 dealer and 1 mechanics, they said there is nothing wrong. 
115000 mi

US $250
Belt tensioner seized up. 

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2008 Mazda Mazda6 4dr Sedan

156-horsepower 2.3L I4 5-speed manual FWD

61000 mi

US $350
Radiator leaking, was replaced for $350 including labor. 

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2007 Mazda MazdaSpeed6 4dr Sedan

turbocharged 270hp 2.3L I4 6-speed manual AWD

24000 mi Engine light came on due to sensor, related to fuel system becoming faulty. Replaced under warranty. 
20000 mi Had DTC P2187 Lean condition at idle on Bank 1. Dealer replaced High Pressure Fuel Pump on engine. Pump runs off of camshaft operating between 485psi and 1885 psi. 
21000 mi Replaced purge valve. Trm levels incorrect. Existing purge valve sticking. 
47000 mi Replaced smoking turbocharger with new updated turbo. 
66000 mi

US $100
Timing Chain replaced 
20460 mi Turbo seals replaced to fix oil leak. 
12000 mi

US $160
Purge valve replaced under warranty, all drivetrain oils and oil filter changed 
15700 mi

US $100
Engine knocking, dealer agrees is unusual but waiting for Mazda to give them advice on the problem and solution. 
18300 mi Engine still knocking, still can't replicate at dealership. Mazda states that it's normal operation. 
42780 mi Check engine came on. Barely able to drive home. Engine would not rev unless gas pedal almost to the floor.Unplugged positive terminal of battery,waited 1-2 minutes and reconnected. Check engine light gone and car back to normal. 
46500 mi

C $350
Check engine light on, found that it was a purge valve, ordered part and fixed it. Problem seems like it is fixed. 
78740 mi

C $1800
Timing chain, actuator, seals, gaskets. 
64480 mi Light came on during normal commute. Took to local mechanic who stated the code was for the EGR valve. Cleared the code and drove with mechanic, where code reader could tell valve was cycling (no problem). Valve may have frozen. 
48000 mi Progressively worse rattle in valvetrain at startup. Diagnosed as failed variable valve timing (VVT) actuator. TSB found, replaced under drivetrain warranty 
51000 mi Failed bypass valve in the turbo plumbing. Second failed stock Mazda valve in 50k miles. Was told that Mazda would only cover a portion of the replacement cost, so I told them to forget it and bought a Forge bypass valve as a replacement. 
11160 mi Repaired sensor for fuel system that was squeeling when engine was cold. 
7500 mi car wouldn't run past idle (felt like flooding/starving for fuel) brought into dealership, replaced High Pressure Fuel pump (took almost 2 weeks in shop) 

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2007 Mazda Mazda6

Engine not specified

105000 mi

US $750
intake sensors shot, both replaced 

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2007 Mazda Mazda6 4dr Wagon

212-horsepower 3.0L V6 6-speed shiftable automatic FWD

77000 mi

US $360
Check engine light came on; caused by clogged evaporative leak detection pump. Pump was removed, tested, cleaned and reinstalled. 
77500 mi Check engine light came on again for a while, and then went off. Technician checked the OBD system and found no active codes. Immediately took the car to an emissions testing station, where it passed. 
83000 mi

US $250
Air intake had dry rot and a tear, triggering the check engine light, and had to be replaced. 
91000 mi Engine fans were running on high speed all the time. Replaced fan control module (third time in last two years) under warranty. I've read that the fans draw more amps as they get older, damaging control module, but don't know if this is tru. 
112840 mi

C $300
Flex pipe repair 
43020 mi Front exhaust heat shield started to rattle. Fixed with screws. 

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2007 Mazda Mazda6 4dr Sedan

212-horsepower 3.0L V6 6-speed shiftable automatic FWD

112700 mi

US $800
Water pump failed. Replaced hoses also while in. 
118000 mi

US $700
Fixed engine oil leak. 
22000 mi Transmission delays before engaging taking off from stoplight. Computer update was done. No cost. 

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2007 Mazda Mazda6 4dr Sedan

212-horsepower 3.0L V6 5-speed manual FWD

120000 mi

US $1250
car refused to respond to throttle, stayed at idle. replace air intake tube throttle body 
122000 mi

US $762
A small plastic part on the water pump housing started to leak coolant. The entire water pump had to be replaced because they do not sell the plastic part separately. 
126000 mi

US $453
Front bypass hose fitting burst, spraying coolant 

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2007 Mazda Mazda6 4dr Sedan

156-horsepower 2.3L I4 5-speed shiftable automatic FWD

10500 mi check engine light. Charcoal canister. Repaired under warranty 
11000 mi Exhaust donut failed. Repaired under warranty 
16500 mi Engine losing coolant - have to fill reservoir every oil change, No leak found. 
25000 mi Damaged muffler seal was discovered after I noticed the car was louder than usual. 
92000 mi Motor mounts replaced 

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2007 Mazda Mazda6 4dr Hatch

156-horsepower 2.3L I4 5-speed shiftable automatic FWD

24300 mi

US $480
Cannot recall exactly, but it was one of the engine sensors that had gone bad. Trip also included an oil change and fuel injector cleaning. 
46300 mi

US $450
Oxygen sensor failed. Was replaced. 

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2006 Mazda MazdaSpeed6 4dr Sedan

turbocharged 274hp 2.3L I4 6-speed manual AWD

51700 mi Turbo had to be replaced. Mazda covered under courtesy warranty extension. No cost to me, and a free loaner for the duration of the repair. 
57000 mi

US $800
Valve seal cover leaking and replaced. Replaced failed passenger side engine mount. 
63000 mi Leaking heater core. 
3000 mi CEL thrown for a bad Tumble Control Valve. New intake manifold was ordered and replaced. 
38000 mi Replace clogged EGR valve, free under 7yr CA smog warranty 
83700 mi

C $413
ENGINE LITE ON DIAGNOSE, THERMOSATE,REPLACED,AND NEW COOLANT, CLEAR CODE, CHECK ALL HOSES, PRESS TEST COOL SYSTEM ALL CLEAR 
94820 mi

C $1500
Replaced timing chain and VVT actuator on purchase of vehicle. Was an expected repair when I purchased the car. 
131440 mi

C $500
EGR Valve 
11000 mi very smokey oil, smoke occasionally extreme; replaced turbo 
68000 mi

US $630
EGR valve went bad 
131300 mi

US $300
New spark plugs and oil 
73000 mi

US $700
EGR value failure.....this is in the owners Manuel that EGR need to be inspect in 75,000miles 
20800 mi Despite undergoing the voluntary TSB reflash Summer '08, the car occasionally stutters when accelerating. It occurs when the car is under load and the driver depresses the throttle from 2500-3500 rpm. Dealer unable to reproduce problem. No fix performed. 
24000 mi Shudder and hesitating under moderate acceleration. I was able to reproduce the problem when I took Mazda tech on a test drive. He recorded data via the OBD-II port and sent to Mazda, who confirmed the issue. 
26000 mi Returned again for engine hesitation and shuddering under moderate acceleration. Dealer replaced boost solenoid tube, which was found to be cracked. Problem resolved. 
83000 mi

US $450
Thermostat was stuck open. 
44000 mi Faulty EGR valve causing CEL to come on 
82000 mi

US $200
Thermostat replaced 
108000 mi

US $245
EGR Valve cleaned (and one gasket needed to be and was replaced). It took 2 days for the mechanic to have a gasket delivered. Standard tune-up that replaced spark plugs. Check engine light had been on intermittently. Diagnosed as a clogged EGR valve. 
109000 mi

US $265
PCV valve replaced. Oil had apparently been leaking into other parts of the engine and likely caused previous EGR problem according to mechanic. 
112000 mi

US $374
Gasket leak found to be root cause of previous issues with oil entering other parts if the engine. Also replaced spark plugs, which were not correct for the Mazdaspeed 6 by local mechanic. 
26000 mi TSB for emissions issue. Check engine light came on, which cuts power to the turbo. They said it was running rich, but never stated a reason. I think they just reset it, but the problem never came back, so it was fixed. 
70000 mi Smoking K04 turbocharger. 
80700 mi

US $600
Replaced rear motor mount 
84700 mi

US $300
VVT actuator noisy on start up, was just outside of warranty extension, common issue that is covered for 70,000 miles under warranty. Replaced VVT actuator, timing chain and tensioner. 
101000 mi

US $190
Replaced worn rear engine mount (dog bone) 
77000 mi Had carbon buildup in turbo valves requiring about $1000 worth of repairs covered by aftermarket warranty right before I sold it. 
107000 mi

US $4500
The engine threw a rod through the block and dumped it self all over the road. There are inherent design problems with the 2.3L MZR Turbo engine that make complete failure very likely. Owners/victims call it ZZB for "Zoom-Zoom-BOOM". 
42000 mi

US $1200
Hesitation resulting from poor fuel pressure from fuel pump. 
56000 mi

US $275
Thermostat and temperature gushed were replaced. 
92000 mi

US $620
Replace EGR valve. 
13000 mi ECU Flash to correct loss of power. Covered under warranty 
28000 mi Turbo was replaced. Blown seal causing the car to smoke. Replaced under warranty 
39000 mi Excessive engine knock. Broke 1 spark plug and fouled the other 3. Plugs replaced under warranty 
115000 mi

US $350
Replaced both the rear motor mount and the transmission motor mount. 
43000 mi

US $190
Replaced belt tensioner. 
5000 mi Replaced fuel pump. OEM turbo seals leaking around 4K miles, took 2 trips in June to get it fixed. Visit 1 - replaced fuel pump, 2 days later still smoking. Visit 2 - 14 days in shop, new Hitachi turbo and gaskets. Problem solved. 
19000 mi O2 Sensor malfunction. 
54000 mi

US $10
Exhaust Gas Recirculator (EGR) valve threw a P0401 code. Removed, cleaned, and reinstalled. 

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2006 Mazda Mazda6 4dr Wagon

215-horsepower 3.0L V6 6-speed shiftable automatic FWD

39000 mi

US $200
Defective drive belt pulley Oil seal leak 
67000 mi

US $150
Oxygen sensor replaced 
76000 mi

US $1300
Oil leak from valve covers 
31000 mi

US $600
Car stalled and check engine light came on. After that, it ran fine. Diagnostics indicated O2 sensor failed plus the injectors needed to be cleaned. 
72000 mi

US $250
The dreaded Mazda 6 purge valve was replaced. 
42000 mi

US $280
Loud noise from engine compartment on cold start-up. Diagnosed as a bad idler pulley. Belts and pulley replaced under warranty.  
72000 mi

US $1000
Hose leak Front O2 sensor replaced, also cracked vacuum hose 
129860 mi

C $1100
Install Serpentine belt, air intake hose from airbox to throttle body,  waterpump, antifreeze and cabin filter. 
62400 mi

C $2000
water pump leaking leaking head gasket catalytic converter noisy 
62620 mi

C $250
warning light of the engine on 
62620 mi

C $2600
Corrosion on bundle wires from motor send all wrong messages to engine, transmission and computer. It took 2 months and 30 hours of labor to find the problem. They changed many parts before finding the problem. 
96000 mi

US $60
Whining noise and coolant leaking from the water pump. 
79000 mi

US $40
Air intake hose replaced due to crackingtearing 
80700 mi

US $600
Leaking waterpump 
87000 mi

US $800
Exhaust leak Water pump replaced 
83700 mi

C $1500
Oil leak from crankshaft seal repaired.  

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2006 Mazda Mazda6 4dr Wagon

215-horsepower 3.0L V6 5-speed manual FWD

56000 mi

US $700
Oil pan leak, gasket replaced 
61300 mi

US $413
Cooling flange cracked Engine Mounts and strut loosened 
85000 mi

US $125
lower engine mount / torgue strut bushing failed. This one only lasted 20k miles. replaced with AWR unit with polyurethane bushings. 
33000 mi Replace leaking oil pan gasket under warranty. 

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2006 Mazda Mazda6 4dr Sedan

215-horsepower 3.0L V6 6-speed shiftable automatic FWD

32000 mi CEL came on. Loose fuel cap triggered CEL. 
129000 mi

US $225
Drive belt y tensioner pulley snapped replaced drive belt tensioner pulley, timing belt 
70680 mi

C $220
Oil pressure sensor was replaced. 
71300 mi

C $445
Timing belt tensioner. 
81220 mi

C $230
Exhaust flex pipe rusted. Replaced. 
104160 mi

C $154
Replace coolant fan module, fan loud and would stay on after car shutoff. 
49000 mi A leaking motor mount was discovered by mechanic. Part had to be ordered first in order to fix. Motor mount replaced. 
61000 mi

US $300
Bad Knock Sensor was causing a check engine light and reduced performance. Knock sensor was replaced and I had 60,000 mile maintenance done as well. 
64000 mi

US $200
Started feeling slight hesitation during acceleration. When fuel gauge got down to below 1/4 of a tank it would hesitate badly and car would lurch. Problem resolved by replacing fuel pump. 
73000 mi

US $164
Knock Sensor went bad again. 
75000 mi

US $61
Knock Sensor issue returned after a couple of weeks. Decided to replace myself instead of taking to dealership due to rental car costs even though the part and labor was under warranty. Has not come back since. 
112000 mi

US $825
serpentine belt replacement and a gasket leak 

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2006 Mazda Mazda6 4dr Sedan

215-horsepower 3.0L V6 5-speed manual FWD

110660 mi

C $150
Front spark plug popped out of the engine for no reason, have to put a helicoil. No other colateral demage, i got lucky. 
45000 mi oil pan leak 
111000 mi

US $300
Engine Mount (T-bone) replaced. 

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2006 Mazda Mazda6 4dr Sedan

160-horsepower 2.3L I4 5-speed shiftable automatic FWD

66000 mi

US $70
Gas cap and evap check valve 
76000 mi

US $1455
Replaced intake manifold, oxygen sensor, spark plugs, and burned out parking headlight 
76500 mi

US $399
Replaced Thermostat and hose that was leaking 
165000 mi

US $410
PCV hose and PCV gasket replaced. Head cover gasket replaced. 
88000 mi The MAF sensor, the PCV hose, and the gas cap were replaced. 
81000 mi

US $379
Thermostat housing had to be replaced and the temperature gauge was running too cold 
60000 mi

US $165
Purge valve had to be replaced. 

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2006 Mazda Mazda6 4dr Sedan

160-horsepower 2.3L I4 5-speed manual FWD

85340 mi

C $572
Rough start, check engine light. Replaced PVC intake hoses. A week later, check engine light on again. Took to a different dealership. After changing, pvc hoses, mass air flow sensor, oxygen sensor, changed fuel pump. 
120700 mi

US $500
Check engine light, plus minor drivability problems. Message was bank 1 lean. Reset once, came back in a week or so. Replaced solenoid and valve in the intake runner. 
121000 mi

US $310
Check engine light back on (see previous repair). This time, changed O2 sensor 
122000 mi

US $350
Check engine light came on again, same code. Mechanic narrowed it down to MAF sensor or fuel pump. Changed MAF for a week to see if that fixed it - it seems to have. 
115700 mi

US $250
Engine temp sensor went out. Had to have it replaced. 
116000 mi

US $2500
Tensioner on timing chain went bad. Skipper several cogs. All valves destroyed, two pistons destroyed. Had to replace engine. 
122300 mi

US $300
The thermostat was stuck open. This is a hard job per where the device is located behind the passenger side wheel. Mileage improved greatly after the fix. 

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2006 Mazda Mazda6 4dr Hatch

215-horsepower 3.0L V6 6-speed shiftable automatic FWD

106700 mi Water pump replaced 
106640 mi

C $449
Water pump failed. 
95000 mi

US $84
Replaced O2 sensor myself with new one from local auto store. Simple switch. 
37820 mi

C $791
Ignition coil on cylinder number 1 was toast. Car ran rough as not running on all cylinders. As check engine light was flashing I had to tow it to the dealership for diagnosis. Towing charge $104, repair cost including taxes $791. 

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2006 Mazda Mazda6 4dr Hatch

215-horsepower 3.0L V6 5-speed manual FWD

42300 mi

US $473
Replaced cracked rear transmission mount 
50000 mi

US $50
Smell of oil burning. Had dealership check for MTX, Oil Pan, Valve Cover, Brake and Timing Cover leaks. No issue found, if it re-occurs, dealership would like me to bring in at no charge. 
57065 mi

US $874
Oil leak from around valve covers. Replaced valve covers, gaskets and seals. 
68136 mi

US $373
Purge valve stuck in open position - replaced. 
69536 mi

US $373
Purge valve stuck in open position - replaced. 
99200 mi

C $100
replace water pump,  crank seal, oil pan seal,  and fuel return vapor solenoid.  
85000 mi

US $400
Replaced oil pan gasket. Car was slowly leaking oil. 
103000 mi

US $120
CEL - running too lean. Examined intake accordion hose and found large crack allowing extra air into throttle after MAF sensor. Replaced accordion hose and CEL cleared itself after a few driving cycles. 
108000 mi

US $103
Heard squeak and clunk noises when shifting; mechanic found motor mounts were very loose. Replaced one missing bolt, tightened all mounts, and problem was solved. 

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2006 Mazda Mazda6 4dr Hatch

160-horsepower 2.3L I4 5-speed shiftable automatic FWD

84720 mi

C $800
Car was running rough and surging on idle. No engine code. Dealer replaced spark plugs and updated ECM. After update a code indicatinig Oxegen sensor 1 defective. Replaced. 
100000 mi

US $32
Replaced cooling system thermostat. Was sticking open causing engine not to maintain proper temperature. Generated Fault code: P0125. Symptoms: occasional rough idle and reduced fuel mileage by about 2 to 3 mpg 

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2006 Mazda Mazda6 4dr Hatch

160-horsepower 2.3L I4 5-speed manual FWD

157480 mi

C $300
thermostat 

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2006 Mazda Mazda6 4-door

4-cylinder manual 2WD

100000 mi

US $200
Coolant sensor 

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2005 Mazda Mazda6 4dr Wagon

215-horsepower 3.0L V6 6-speed shiftable automatic FWD

49600 mi

C $350
air intake hose cracked 
30500 mi A ticking noise under acceleration was repaired under a technical service bulletin. 
43400 mi

C $800
Dealer cleaned out carbon buildup they claimed was in FI system, didn't feel like arguing about it 
88040 mi

C $600
For a few months, heard rattling when accelerating under load. MIL was lit, dealer read out the codes. Code indicated a lean condition. On diagnosis, intake snorkel was cracked, allowing in more air than the MAF could sense. Dealer replaced. Engine has been occasionally shuddering under load and at idle. One of the codes read out during this diagnosis indicated a few misfires on one cylinder. Dealer recommended spark plugs be replaced. 
93460 mi

C $800
While driving on the highway, traction control light came on, and coolant temp gauge started going crazy. Got off the highway, parked and watched coolant drain out. Serpentine belt tensioner had failed, killed the belt, both were replaced. Replaced plugs, in keeping with previous recommendation relating to shuddering under load. 
72000 mi

US $600
Something with cylinders 
52700 mi

US $570
o2 sensor went bad and air boot cracked 
54000 mi minor oil leak 

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2005 Mazda Mazda6 4dr Wagon

215-horsepower 3.0L V6 5-speed manual FWD

37200 mi Fan module replacement. 

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2005 Mazda Mazda6 4dr Sedan

215-horsepower 3.0L V6 6-speed shiftable automatic FWD

78000 mi

US $650
Radiator plug cracked or something. Replaced radiator plug and fan. 
83000 mi

US $200
Hydraulic motor mount replacement. 
89000 mi

US $383
Valve cover leak 
96000 mi

US $1000
Engine mount studs stripped and engine fell. 
97000 mi

US $1300
Oil leakage 
100700 mi

US $3000
Timing cover leak hitting exhaust 

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2005 Mazda Mazda6 4dr Sedan

215-horsepower 3.0L V6 5-speed manual FWD

104000 mi

US $800
I had two more ignition coils replaced. This is after I replaced all six of them a few years prior at around 80,000 miles. 
72000 mi

US $200
Transmission torque arm broke. 
85000 mi

US $200
Water pump pulley bearings were going. Pulley replaced. 
85700 mi

US $150
Idler pulley was making noises, so I had it replaced. 
89000 mi

US $220
Needed to replace one coil. 
90000 mi

US $45
Plugs. 
25420 mi Check engine light came on. Needed to replace solenoid in engine bank. 
83000 mi

US $220
Engine noise at low RPM on T-giving day. I drove it ~100 miles home, no change in noise, no other symptoms. Parked for a week, then took it to shop. Crank seal had failed, leaked out most of the engine oil. Seal replaced. Noise abated. 

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2005 Mazda Mazda6 4dr Sedan

160-horsepower 2.3L I4 4-speed shiftable automatic FWD

86000 mi

US $4000
Have been taking the car to the dealer for over a year now same problem occurs every time the runs fine then starts to shudder and wont accelerate you have to shut the car off and start it again 
86000 mi

US $2000
Turned out to be electronic throttle system sensors a an b plus a short in wire harness this has stopped intermittent surge and having to shut off car and restart 
108000 mi

US $350
The thermostat was stuck open. 
52060 mi Engine light came on. With scan tool indicated MAP sensor issue. Unable to locate sensor to further diagnose. Will be taking to mechanic to diagnose & repair 
53320 mi

C $130
Repair completed by self, with correct part (MAP sensor) ordered from dealership. previous repair trip to mechanic resulted in replacing of incorrect part (barometric pressure sensor) which was located behind battery vs. MAP in intake man. 
104760 mi

C $13
Engine would stall and restart under low speed driving,engine light would come on.Replaced gas cap. Fixed problem and car drives better than ever! 
122760 mi new thermostat 
71000 mi Had to replace engine, out of warranty 
74000 mi

US $205
Air intake tube torn... 
105000 mi

US $215
Belt tensioner went bad 
113700 mi

US $122
Bad cylinder 5 changed all spark plugs and no.5 ignition coil, replaced all upper intake gaskets 
121000 mi

US $40
Ignition coil #6 was bad 
60140 mi

C $113
Thermostat was weak, temp would drop to about 1/4 of the gauge when the engine was being revved/highway. Replaced thermostat, flushed coolant. Changed transmission fluid - shift quality improved, no more hard shift into 2nd gear 
72540 mi

C $550
Replaced fuel pump 

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2005 Mazda Mazda6 4dr Hatch

215-horsepower 3.0L V6 6-speed shiftable automatic FWD

129000 mi Tensioner pulley wore so much it shredded the belt. Car shut off, coolant exploded from reservoir. Replaced pulley, belt, and coolant. 
199000 mi

US $300
The transmission mount was broken and needed to be replaced. This issue was discovered during the repair and was not the reason the car was brought in. 
79300 mi

US $420
Needed new coil. This one coil is under the intake manifold. That had to come off first. 
118000 mi

US $2200
Engine valve determined to leak oil/was replaced, spark plugs replaced, brake rotors resurfaced, transmission fluid flushed/filled, oil and filter serviced, cabin filter replaced. 
121300 mi

US $600
Water pump pulley seized in cold weather. Caused radiator to overheat, spilling radiator fluid all over. Replacement parts and labor < $600 
153000 mi

US $1393
replace fan control unit, 
69500 mi

US $390
EGR valve bad. Replaced and intake cleaned. 

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2005 Mazda Mazda6 4dr Hatch

215-horsepower 3.0L V6 5-speed manual FWD

34000 mi I noticed leaking oil in the garage. They reported that it was a bad oil pan seal and would have to be ordered and replaced. 
34300 mi

US $400
The oil pan gasket was replaced. They said it was expensive because the exhaust system had to be lowered to access it. 
43500 mi

US $60
I had an engine light, I took it to a Ford dealer, and their system said it was an gas tank evap code. They cleared it and it hasn't come back since. 
89280 mi

C $150
Badly stuck lifter. Was repaired with degreaser. 

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2005 Mazda Mazda6 4dr Hatch

160-horsepower 2.3L I4 5-speed manual FWD

135700 mi

US $868
Clutch was releasing high and didn't feel crisp. Was replaced. Price includes clutch lining, which was a wear item (I don't have parts breakdown.) 
141000 mi

US $930
Valve cover gasket was leaking, requiring replacement of ignition coil in Cylinder #1. Valve cover gasket, ignition coil, spark plugs replaced. Right muffler detached due to corrosion. Repair subcontracted out to independent exhaust shop, repaired without replacing parts. 
149700 mi

US $70
P0128 code and some stalling when engine not warmed up, in cold weather last winter. Replaced thermostat. 
151700 mi

US $413
Replaced PCV valve, PCV hose, intake manifold gasket, as an attempt to stop a problem with oil consumption (1 qt / 400 miles). This didn't seem to help the problem much, if at all. 
155000 mi

US $40
Lower motor mount (torque strut) rubber was cracked. Replaced it. 
157000 mi High oil consumption never fixed. 
79360 mi

C $500
Faulty fuel pump had to be replaced. Numerous trips to the dealer were required as they could not replicate problem if the car had over 1/4 tank of gas. 
125000 mi

US $269
Thermostat was stuck open. It was replaced. 

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2004 Mazda Mazda6

Engine not specified

120000 mi

US $500
hose connected to pcv valve. 2 dollar part, 500 labor to get to the stupid thing! 

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2004 Mazda Mazda6 4dr Wagon

220-horsepower 3.0L V6 5-speed shiftable automatic FWD

70432 mi Replaced front catalytic converter due to a crack at the exhaust manifold (covered under the emission warranty) 
80260 mi

C $100
Check engine with the code p0305 came ON - cylinder 5 misfires. Replaced ignition coil 
102920 mi

C $150
Oil leak from the oil pan 
70000 mi

US $65
Engine idled roughly and engine light came on. Replaced ignition coil. 
75000 mi

US $65
Engine idled roughly and engine light came on. Replaced ignition coil. 
103000 mi Engine was idling rough and engine light came on. Higher RPMs did not have problems. OBD reading said error code was P0171 and P0174, which means engine banks 1 and 2 are too lean. I used cleaner on the MAF and replaced sorta cracked intake. 
104000 mi Engine was idling rough and engine light came on. Higher RPMs did not have problems. OBD reading said error code was P0171 and P0174, which means engine banks 1 and 2 are too lean. Turned out to be cracked PCV hose by firewall. Add fuel system cleaner. 
115000 mi

US $13
Engine idled rough. Check engine light was on. ECU code says bank 1 and 2 are lean and cylinder 5 misfire. Found PCV elbow hose is cracked. Replaced and engine idles better. 
10005 mi Replaced defective cooling fan control module under warranty 
45880 mi

C $300
Oil pan cover. 
117000 mi

US $220
A clip had broken off a cooling line and leaked coolant. The radiator was bone dry. Had to replace the clip and refill the coolant. No other issues found. 
87000 mi

US $800
Stalling. Intermittent at first, then got worse. No code at first, then misfire code. First diagnosed as ignition coil, then fuel pump. 
80180 mi

C $1100
Rear seal leak-had to be replaced. 
54560 mi Worn out coil boots were arcing causing bad hesitation and juddering at most RPM. Replaced coil boots and the engine is smooth. Mechanic replaced spark plugs as well. 
61160 mi

C $1200
Diagnosing/attempting fix of worsening misfire. Replaced 3 rear coil packs, MAF, new intake gasket, etc... This helped alot, but did not resolve the issue completely. 
61560 mi I ended up replacing the coil packs on the front bank and that resolved the misfire. 
63240 mi

C $485
The crankshaft seal was weaping. No oil noticeable on garage floor. Seal replaced. 
70240 mi

C $2700
Weaping water pump Oil pan gasket leaking 
99000 mi Owner identified oil leaks. Vehicle was brought to mechanic and vehicle needed new front and rear main seals and oil pan gaskets. Decided to sell vehicle. 
114000 mi

US $20
Rattling under dvr/passenger seats when car started in morning. Goes away as car is driven. Heat shield was rusted, hitting exhaust. Garage removed Heat shield. 
70680 mi

C $550
engine light came on. sensor and hose required replacing. also got rear brakes replaced due to wear 
89860 mi

C $1000
Leaking gaskets and oil pan seal 
44640 mi

C $150
TSB 60 for Fan Operation. Previous owner never had repaired this. 
49600 mi

C $90
Car had rattling noise and brake grinding. Shop found some rust on brake, cleaned and lubricated. Rattle was rusted heatshield on catalytic converter. Catalytic converter replaced under warranty. 
58900 mi Cracked exhaust manifold, part replaced 
67580 mi

C $35
Check engine light was after returning home from Vacation. Code check indicated engine misfire. Rough start first time after vacation. No other indications of a misfire since that time. 
97740 mi

C $700
Main bearing front 

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2004 Mazda Mazda6 4dr Wagon

220-horsepower 3.0L V6 5-speed manual FWD

61380 mi Broken engine mount replaced. 
186000 mi

US $200
Coils and plugs Intake pipes replaced 
88000 mi

US $400
Car overheated. Radiator hose replaced. Another part (air intake hose?) also replaced since it looked like it was about to fail, per dealer. 
58000 mi

US $40
Check engine light attributed to loose gas cap. 
94000 mi

US $280
Check engine light on; needed a sensor replaced Replaced rear valve cover gasket to repair significant oil leak 
104000 mi Heatshield rattle, clamped at no-charge while in for OLF. 
112000 mi

US $550
Main bearings worn out and replaced TSB on check engine light on related to a minor leak in evap system; shop advised that dealer will need to clear the code from memory before leak can be fixed & car will pass NJ emissions testing in NOV 
144000 mi

US $120
Thermostat failed, car overheated, pressure buildup blew out sensor. Thermostat & sensor replaced 
100440 mi

C $90
Coil pack on Cylinder 6 went bad...had been showing symptoms every time the relative humidity took a jump...would start misfiring. 
112220 mi

C $275
Cel displaying catalyst issue. Replaced fouled spark plug, ignition coil, and O2 sensor. 
113460 mi

C $65
CEL still on with P0431 code replaced second, downstream O2 sensor...CEL light came on again after 3 days (nothing more to replace other than pre-cat). 
117800 mi

C $800
after replacing all other components, the cat had to finally be replaced. I supplied the replacement cat and paid labor for the shop to install. 

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2004 Mazda Mazda6 4dr Sedan

220-horsepower 3.0L V6 5-speed shiftable automatic FWD

127000 mi

US $90
Mass air intake hose had to be replaced. 
80000 mi

US $400
The ignition coil went bad and it needed to be replaced as well as all the spark plugs. 
62620 mi

C $99
P431 code; scanned with ScanXL ElmScan tool at home and O2 sensor readout showed a failed bank 2 catalytic converter. Was replaced under warranty (which will run out at then end of this month) 
71040 mi

C $120
The a few ignition coils needed to be replaced, and I also changed a fuel injector. The engine runs like brand new now. No misfires at near max speed. 
87380 mi The engine is leaking oil. Potentially due to an incorrect installation of engine gaskets at a previous time the car was repaired (before I owned it). But it is not so bad that it is dripping on floor. I'm monitoring oil level monthly. 
91140 mi

C $250
The belt tensioner is dying and needed to be replaced, a lot of squealing going on. The squealing is still around, but not as bad as before. The A/C pulley was also making a lot of the noise and needed lubrication. 
93000 mi

US $868
Water pump had a leak and was replaced. Also replaced bypass hose as it was swollen. Oil pan was leaking fluid. Leak was sealed with a sealant. 
30000 mi Bad seal on gas cap. Gas cap replaced. Problem solved. 
58700 mi Intermittent hesitation when accelerating. No CEL 
67000 mi

US $500
Replaced Air Intake hose (containing multiple sensors) Replaced Ignition Coil on cylinder 5. 
69000 mi

US $100
Replaced failed engine mount 
74000 mi

US $1348
Had to replace coils. Multiple oil leaks requiring replacement of three gaskets. 
82000 mi

US $1125
Bad fan control module 
187000 mi

US $600
Car died suddenly, had it towed in. Diagnosed and had MAF sensor replaced. 
197000 mi

US $127
Vacuum hose was broken. Replaced and was as good as new. 
226700 mi

US $185
Check Engine Light came on. Indicated B2S2 oxygen sensor is bad. Chose not to repair at this time. Also had brakes checked - OK. 

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2004 Mazda Mazda6 4dr Sedan

220-horsepower 3.0L V6 5-speed manual FWD

109000 mi

US $20
Got check engine light with engine stuttering, rough idle. Noted simultaneous P0171 & P0174 DTC codes. Discovered "sucking sound" near intake with engine running. PCV hose was cracked/collapsed. Replaced PCV hose and valve. 
139000 mi

US $16
Oil pressure switch leaking. 
154000 mi

US $300
Replaced remaining engine mounts. 
156700 mi

US $25
Belt tensioner froze, plastic pulley disintegrated. Followed suggestions from other owners and removed the belt tensioner completely, and replaced the belt with a stretch-to-fit belt directly between water pump and drive. 
161000 mi

US $20
Replaced lower dog-bone engine mount. 
171000 mi

US $120
Radiator leaking from top joint between plastic/metal. 
156000 mi

US $850
Throttle body replacement-sensor went bad and the car had no fueling power. Over heating after throttle body was changed. New thermostat still over heating. Hose leaking and other all connectors for coolant. It leads to the throttle body. 
68820 mi Excessive oil consumption. Dealer said it was leaking valve cover gasket. Turns out that the PCV valve failed as well. Ordered PCV Valve. Took to friend who owns shop to replace PCV Valve 
69440 mi

C $400
Valve cover gasket was leaking. Changed sparkplugs as well since Intake Manifold had to be removed. 
71300 mi

C $10
Drain bolt seal was worn and was no longer effective. Replaced drain bolt. 
72540 mi

C $250
Oil pan gasket was leaking again. (was fixed under warranty in Dec 07). Mazda said it's out of warranty now so they won't do anything. Bought redesigned oil pan and replaced instead of replacing old gasket that will die again in a year. 
105000 mi

US $165
Replaced battery, removed rattling heat shield 
112300 mi

US $129
CEL, slight hesitation/loss of power. Air intake hose was cracked. I replaced it. The part was the only cost. 
118000 mi

US $300
Replaced broken motor mount. 
124000 mi

US $126
Blue smoke from exhaust. Appears to have been a blocked PCV valve at this time. 
120000 mi

US $120
Lower engine mount failed. The rubber had been ripped through. A replacement (aftermarket) mount was installed that has solid urethane instead of rubber. 
126000 mi

US $300
Pulley for the water pump seized. Belt and pulley replaced. Water pump was ok. 
135300 mi

US $500
Oil Leaks.  
138000 mi

US $1384
Precat (exhaust) needed replacing. 
30000 mi Check Engine Light - traced to faulty fuel filler cap. 
83000 mi

US $74
Car was losing oil at the rate of 1 quart per 800 miles, with no signs of leaks or burnoff in exhaust. Dealer diagnosed a "sticking" PCV valve, which partially worked. Valve was replaced. 

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2004 Mazda Mazda6 4dr Sedan

160-horsepower 2.3L I4 5-speed manual FWD

68820 mi

C $110
Engine light on - took to mechanic, they hooked up to computer and said fuel line problem (losing pressure) that needs more investigation to fix. 3 days later light went off on it's own. 
67000 mi

US $500
Muffler had to be replaced due to rust. 

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2004 Mazda Mazda6 4dr Sedan

160-horsepower 2.3L I4 4-speed shiftable automatic FWD

47120 mi Erratic idle speed, 700 - 2000 rpm. Fixed by software refresh/updates 
71920 mi Erratic RPMs at idle and low speed driving 
82460 mi slightly noisy tensioner on serpentine belt. Tensioner and belt replaced under mazda extended warrnty 
68200 mi

C $300
Check engine light was on, vacuum hose had cracked. It was replaced. 
133300 mi

C $3000
Engine replaced with used engine due to impending failure of connecting rod (causing loud internal knocking noise) - same diagnosis from two mechanics 
198400 mi No compression cylinder 3. Still running but mechanic suspects blown rings. Sold as is. 
96000 mi

US $340
Engine thermostat replaced 
71000 mi

US $260
purge solenoid replaced, bad vacuum hose 
97000 mi

US $655
Fuel pump 

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2004 Mazda Mazda6 4dr Hatch

220-horsepower 3.0L V6 5-speed shiftable automatic FWD

93000 mi

US $430
Catalytic converter repaired 
106000 mi

US $650
Car was idling rough. The mass air flow tube was cracked. That was repaired and the throttle body and mass air flow sensor were cleaned 
106000 mi

US $700
Rough idling problem persisted after the first fixes. I searched online for the symptoms of rough idling at low rpms and found that it was likely ignition coils and spark plugs. I requested to have those checked 
114000 mi

US $126
Had to replace the spark plugs and #4 coil pack 

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2004 Mazda Mazda6 4dr Hatch

220-horsepower 3.0L V6 5-speed manual FWD

157700 mi

US $476
Tensioner for water pump belt seized, destroying the belt. Repair consisted on replacing the belt and tensioner, cleaning the residue from the destroyed belt, and topping off coolant. 

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2004 Mazda Mazda6 4dr Hatch

160-horsepower 2.3L I4 5-speed manual FWD

104000 mi

US $300
computer programming problem 
122700 mi

US $1300
replaced the clutch 

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2004 Mazda Mazda6 4dr Hatch

160-horsepower 2.3L I4 4-speed shiftable automatic FWD

94700 mi

US $358
Replaced two motor mounts. The car would jump noticably when shifted from park in the morning and during the first few gear shifts. Separately, the transmission light came on after a violent storm, but reset after disconnecting battery. 

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2004 Mazda Mazda6 4-door

turbocharged 4-cylinder diesel manual 2WD

116940 mi

$100
replaced the engine buffer (made of rubber) 

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2004 Mazda Mazda6 4-door

6-cylinder automatic 2WD

17000 mi Car is getting horrible gas mileage, less than 10MPG, was brought to dealer to evaluate engine for the fourth time. Problem still not fixed. 

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2003 Mazda Mazda6

Engine not specified

77000 mi

US $1300
Engine miss at 75K. 3 spark plugs and 3 ignition coils, plus replacing valve cover gasket. Price-1300. major work to replace plugs, including taking off intake manifold. Poor design. 
115320 mi Bad diagnosis for Mazda. I decided no repair because the cost was 4500$. I sold the car and the buyer discovered there was nothing broken, only bad oil ( Mazda team put the oil at 180.00 ) 

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2003 Mazda Mazda6 4dr Sedan

220-horsepower 3.0L V6 5-speed shiftable automatic FWD

94000 mi

US $800
Valve cover gaskets reported as "seeping" at July repair shop trip - got it repaired today. Oil pan gasket is leaking - previously unknown problem repaired today. 
96000 mi

US $245
Car showed check engine light and code P0303 which is misfire in cylinder #3. When shop drove, problem had disappeared after barely being drivable for me. Shop switched ignition coils on #3 and #4 to see if problem would reoccur but has not yet. 
19045 mi Warranty - radiator fan 
101000 mi

US $133
Appears a specific valve got stuck, causing throttling issues. Valve was cleaned out and lubed.  
104000 mi

US $1175
This is related to the problem in april...one of two fixes-the first was a valve got stuck with dirt. This didn't work, car lost all power on highway. So did the alternative solution which was to replace an electronic component that controlled the valve. Had to fix the key ignition ... somehow it wouldn't recognize any of my 3 keys ... something happened to the tumblers ... couldn't drive car until locksmith fixed it. 
113000 mi

US $65
Just a slight oil leak. Had to add some silicon in multiple joints. 
122700 mi

US $150
Had to replace a broken engine mount (circular object) holding the engine to the chassis. (car would vibrate really bad unless it was in neutral). 
127000 mi 1)leaking oil. will need to replace some type of engine valve gasket 2)engine mount needs to be replaced 3)water hose to engine is leaking, and needs to be replaced. 
131000 mi

US $1950
Evap sensor bad. Not required to smog test in my location, so told I could live with it as repair was more than car was worth. Diagnosis worn spark plugs, misfire #4, bad coil #4, possibly additional sensors issues. 
132000 mi

US $450
Car kept dying after rain storm. New codes resulted in flashing CEL, All 4 of 6 ignition coils shot. Repair was worth more than car was worth. Cut my losses and sold it to shop for half of value to cover cost of repairs. 
148800 mi

C $500
Muffler needed to be repaired. 
78000 mi Bad Fan Module. The fan would run constantly, even after shutting the car off. 
113000 mi Air/fuel mixture sensor failed. Would have cost $500 to fix. 
98000 mi cooling fan is running on high constantly, stays on for a short while even after car is turned off. Shop says it wont hurt anything/might be a circuit in the computer but it would be 500+ to send for repairs. 
101000 mi cooling fan made loud constant noise. I discovered it was under recall so it was fixed for free. 
67000 mi

US $552
Throttle body had to be replaced. 
141000 mi

US $975
Replace cooling fan assy and radiatior 
125000 mi Had issues with rust on the bottom of the vehicle, and my catalytic converter subsequently had to be replaced. 
161000 mi

US $400
Pcv.cam sensors .throttle body.spark. plug.reset computer . 

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2003 Mazda Mazda6 4dr Sedan

220-horsepower 3.0L V6 5-speed manual FWD

110000 mi

US $1600
Had clutch and oil pan gasket replaced. 
93000 mi

US $310
Bad ignition coil. Replaced. 
101000 mi

US $800
Temp gauge going up at idle. Replaced thermostat. Prob remains. Probabaly broken water pump fin, will replace next time, not pressing. 
121000 mi Temp gauge going up at idle. Probabaly broken water pump fin. 
62000 mi Engine blown. Turned main bearing. Salvaged. 
121000 mi

US $3000
Engine died. I replaced the engine, exhaust manifold, and catalytic converter with used parts.  
127000 mi

US $440
needed new throttle body 
129000 mi

US $1000
Needed new catalytic converters. 
134000 mi

US $300
replaced water pump belt and tensioner, latter preventive 

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2003 Mazda Mazda6 4dr Sedan

160-horsepower 2.3L I4 4-speed shiftable automatic FWD

56000 mi

US $630
Tailpipes and muffler separated from exhaust system  
68000 mi

US $1400
Intake manifold gasket failure caused Check Engine Light and rough running/idle at low speed. Very costly repair, apparently very common with Mazda/Ford 2.3L 4 cyl engine. Also reflashed ECU to resolve open TSB/recall notice. 
52700 mi

$100
Engine mount, rear/firewall "dogbone" Serpentine belt tensioner 
96000 mi

US $800
Check engine light came on. Some seals needed replaced, and the PCV valve was cracked. Also put on 4 new tires, and oil change. / tune up. 
109000 mi

US $3900
Engine replaced with rebuilt, warranty engine 
20443 mi CEL came on for oxygen sensor - TSB for false read - PCM software updated 
33439 mi

US $444
Replace front brake rotors (266) + engine mount (178) 
86000 mi

US $200
Replaced thermostat 
82000 mi

US $90
Code P0456 - Evap Vent Solenoid stuck. Part on top of fuel tank; non-critical at this time. Parts & labor estimate $600. 
86000 mi

US $300
Accessory belt tensioner pulley was making obvious noise suggesting bearing or other failure was on its way. Repair performed at Ford (Mazda 6i uses same 2.3L Duratec) replaced pulley. 
95000 mi

US $55
Noticed slight burning smell over 3 days prior to planned service, so requested technician investigate. Discovered housing for oil filter cartridge was cracked & had minor leak. Housing replaced during oil change; no labor charged. 
150000 mi

US $275
Replaced split PCV hose. 
155000 mi Return of the CEL with same codes as before PCV repair 
61000 mi

US $650
Fuel Vapor recovery system failure 
38000 mi computer chip malfunction shut down the car while on highway. under warranty and was fixed. 
90000 mi

US $250
oxygen sensor replaced 
90940 mi

R 3200
normal service, and catalytic convertor engine light constantly on. problem still persists. Too expensive to replace the convertor. 

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2003 Mazda Mazda6 4-door

4-cylinder automatic 2WD

95000 mi

US $400
Passenger side muffler and pipe was leaking keeping the car from passing emissions. 

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Mazda Mazda6 Engine Problems

See our lemon odds and nada odds page to see vehicles with no repairs or vehicles with more than three repairs. To see how frequently Mazda Mazda6 problems occur, check out our car reliability stats.