Mazda CX-7 Mazda CX-7

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Mazda CX-7 repairs by problem area

Engine (45%)

Transmission and Drivetrain (8%)

Brakes and Traction Control (3%)

Suspension and Steering (12%)

Electrical and Air Conditioning (20%)

Paint, Rust, Leaks, Rattles, and Trim (8%)

Other (4%)

Chart based on 482 repairs.
See TSBs and recalls for the Mazda CX-7.

Mazda CX-7 engine repair cost distribution

$2500+ (8%)

$1000 - $2499 (8%)

$500 - $999 (13%)

$100 - $499 (23%)

< $100 (49%)

Worried about potential repair costs? An extended warranty can provide peace of mind.

Chart based on 167 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.

2012 Mazda CX-7 4dr SUV

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

104000 mi

US $600
New plugs, rough idle in extreme cold weather. 

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2011 Mazda CX-7 4dr SUV

turbocharged 244hp 2.3L I4 6-speed shiftable automatic AWD

131440 mi and also pcm computer. 
36700 mi

US $90
Radiator cap failed to hold pressure. Replaced cap. 

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2011 Mazda CX-7 4dr SUV

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

70060 mi

C $120
Bottom engine mount replaced. I felt some roughness and shimming when brakes applied at high speeds. 
169000 mi timing belt 
138000 mi

US $40
Replaced the original serpentine belt 

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2010 Mazda CX-7 4dr SUV

turbocharged 244hp 2.3L I4 6-speed shiftable automatic AWD

4940 mi Brought in for second service. Mechanic noticed large oil leak. Engine was covered with oil under plastic engine cover. Put in rental car, and asked to leave overnight. Leak repaired the following day once found. Pinched valve cover gasket. 
13640 mi Check engine light came on, and ran rough. Diagnosed as a faulty O2 sensor. Replaced under warranty. Three hours down time. 
16120 mi

C $270
Due to an ongoing oil leak, poor fuel economy, loss of power, and harsh noises on start up, turbo had to be replaced with updated unit. 

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2010 Mazda CX-7 4dr SUV

turbocharged 171hp 2.2L I4 Diesel 6-speed manual AWD

20000 mi Engine holding back when cold, garage re-set fuel injectors car now ok. 

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2010 Mazda CX-7 4dr SUV

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

190000 mi

US $750
Replace engine mount 
27800 mi Oil leak coming from timing chain cover. Resealed with RTV silicone. 
138000 mi

US $1000
Passenger side motor mount - replaced due to failure of original.  

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2009 Mazda CX-7 4dr SUV

turbocharged 244hp 2.3L I4 6-speed shiftable automatic FWD

29000 mi Valve cover oil leak repair, replaced cover, and diagnosis of some noises. 
27900 mi Bad EGR valve. 
46000 mi

US $600
EGR valve failure. Extended warranty did not cover. 
40000 mi

US $250
One engine mount leaking (replaced) 
44000 mi

US $2000
Egr valve replaced 
34000 mi Egr valve replaced 
59000 mi Egr valve repair for the second time 
60000 mi

US $8000
The VVT had stretched and the turbo was shot. This car will never be driven by us again. Mazda will not repair, so we are looking at going to court. This model of Mazda, really needs to be recalled for the issues we are dealing with. 

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2009 Mazda CX-7 4dr SUV

turbocharged 244hp 2.3L I4 6-speed shiftable automatic AWD

21280 mi

C $200
Timing chain and VVT replaced (in one of Mazda's TSB), free of charge Small coolant leak, had to replace unit, ~200$ 
41540 mi

C $600
Egr valve gunked 
44640 mi

C $650
Turbo replaced 
32440 mi Very high engine oil level,two months after oil change. Fuel contamination.  
33480 mi same problem remains unsolved,even after replacing the fuel pump and injectors.engine oil contaminated with fuel.engine oil level higher with 1cm every 500 km.a second fuel pump replacement was done on april 25th.keep oil level on close wac. 
34100 mi engine replaced.in the process the fuel tank damaged.leaking fuel.fuel tank replaced.after 3000 km replaced the oil.too dirty they said. after that the old issue reappear.the oil level is over the max on the oil stick.oil is getting again ml 
36000 mi

US $210
Nut holding TPS unit disappeared. Discovered missing by mechanic when checking tire pressure. 
54300 mi

US $388
Failed EVAP test pump 
70000 mi

US $4900
Turbo failed with white smoke. Replaced turbo & spark plugs 

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2008 Mazda CX-7

Engine not specified

46000 mi turbo went out 
74000 mi

US $380
coil failure , coil was replaced 
47000 mi

US $7500
The turbocharger went out and leaked into the engine. The cooling of the engine is poorly designed and despite normal oil level, the engine will literally cook itself. Poor cooling design for the turbocharged engine. Very unreliable. 

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2008 Mazda CX-7 4dr SUV

turbocharged 244hp 2.3L I4 6-speed shiftable automatic FWD

162000 mi

US $600
Oil Leak repaired 
19000 mi Broken Passenger's motor mount. 
25000 mi Turbo smoke after long periods of idling. 
25000 mi Still turbo smoke after long periods of idling when sold. New owner said he noticed it first time he drove it. AC compressor also went out right after he got it. 
53000 mi

US $258
EGR valve replaced 
47700 mi

US $670
EGR valve needed replacement 
102000 mi

US $2500
Replace timing chain and tensioner 
28000 mi VVT ACTUATOR REPLACED 
73300 mi

US $102
TIMING CHAIN AND TENSIONER BAD MOTOR MOUNT 
37000 mi

US $100
EGR Valve failed and was replaced. 
75000 mi

US $1500
VVT, Timing chain 
57000 mi

US $900
EGR valve replacement 
91000 mi

US $700
Thermostat failed Engine mount replaced 
132000 mi

US $960
Random misfire led to check engine light and rough idle, lower power. Needed to replace one fuel injector. 
33060 mi

$120
Check engine light was on, besides the cooling fan turned on at odd times sometimes staying on for a long time after killing the engine. Coolant temp was OK. 
23440 mi

€270
white / cloudy Smoke coming out of exhaust and very low oil. Dealer replaced oil and said no major issue. Smoke due to low oil in Sump over compensating. Advised car should always be topped up with oil every 6 months 
29440 mi

€1200
Car needed a new Turbo. White smoke regularly coming out of exhaust when car static or accelerating. Mazda eventually agreed to cover 80% of costs due to issue first being raised within warrenty. The car also received a regular service 
47000 mi Leaking oil around timing chain cover.  
103000 mi

US $200
2 cylinders leaking - needed new engine 
13000 mi The chrome exhaust tips rusted, dealer replaced with no questions. Replacement required an entire muffler assembly with tips. 
48000 mi Turbo was replaced under TSB/Mazda's extended warranty for known turbo seal issue. 
55000 mi I noticed my car running at a higher temperature than usual, and the radiator fan coming on frequently. I took it to the dealer and told them I thought the thermostat was bad. They verified that it was, and replaced it the same day. 
60000 mi Smoking from exhaust, TSB followed to remedy the problem. Timing chain replaced under warranty by TSB 
105000 mi

US $150
a transmission mount was cracked, causing the shift from neutral to reverse to be somewhat jarring. They replaced the mount, no issues. 
31000 mi EGR valve replaced after P0401 engine code. 
35000 mi Oxygen sensor bad. Eight engine codes pointing to lean running. Fuel economy went from 22mpg to 15mpg. Bad gasoline smell from exhaust. 
20000 mi gas cap caused check engine light, replaced by dealer under warranty 
8680 mi Chrome exhaust tips rusted where they were spot welded. Dealer replaced the muffler under warranty. 
19220 mi Vehicle hesitating when warm, lack of power, engine extremely noisy. Replaced timing chain. 
48740 mi Fixed a couple oil leaks while at dealer for routine oil change. 
58900 mi

C $450
Front O2 sensor 

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2008 Mazda CX-7 4dr SUV

turbocharged 244hp 2.3L I4 6-speed shiftable automatic AWD

80000 mi

US $1700
VVT was replaced for the 2nd time in 13.000 miles and a leak into the turbo was repaired. 
100495 mi

US $4299
Turbo charger was leaking and was replaced. Rear main seal was leaking as part of many leaks occurring. Rear main seal was replaced. PCV valve was replaced. Mechanic said a problematic PCV valve could be the reason the entire back engine (turbo, rear main seal) was having multiple leaks from pressure build up. 
144000 mi

US $1500
It is was a blown head gasket that needed to be replaced 
25420 mi Fuel sensor failed. Under warranty so it was replaced. 
29000 mi

US $50
White smoke was noticed while engine was running (for heat) in parking lot. Vehicle driven several blocks and laid down smoke screen. Smoke stopped after a few blocks. Did not drive for a month. Took to local repair shop and no cause found 
58000 mi

US $365
Coolant hose behind engine was leaking and car was smoking due to faulty turbo seals. After getting car back from supposed repair, check engine light (CEL) came on the next day (P0016 crankshaft/camshaft position sensors). Counterman at dealer said it was just a coincidence that the CEL came on after they had worked on it. 
38000 mi

US $10000
My Mazda CX-7 had a new turbo engine put in. I had to pay $10,000 of which I really could not afford.The dealership blamed me for the sludge in the engine although I faithfully changed my oil . I know in the future I will file a lawsuit. 
41020 mi blue/white smoke from exhaust when idle or at lower speeds. ventilation kit replaced under warranty per SSP84. 
41640 mi

C $112
CEL was on. Mass air flow sensor clogged. mazda cleaned it under warranty. 
44640 mi CEL light is back on. Have been told EGR valve needs to be replaced. Went to my mechanic and he thoroughly cleaned it up and it works fine now. 
53500 mi the turbo was replaced 
56000 mi after the turbo was replaced, oil was leaking within a week. repaired at no cost. 
42000 mi

US $100
leaking oil, appeared to have been coming from transfer case. Issue turned out to be a loose hose from the turbo. 
58000 mi Smoking turbo and loose timing chain. Turbo and chain replaced under warranty 
53000 mi Fixed oil plug leak 
68000 mi

US $550
ACG valve needed replacing Car smoked when idling for long periods 
3100 mi

$50
Check engine light came on due to a loose gas cap. 
68700 mi

US $477
Check engine light on. Third cylinder misfire. After full Engine Diagnostic ($99.99), the ignition coil needed to be replaced($208.99). Also replaced the spark plugs as part of the maintenance ($138.96). 
65000 mi

US $460
Emission code indicated replace Leak Detection Pump. Detection Pump replaced. Cost including labor was $388.89. Mysterious clunk in the rear. Checked suspension and found nothing wrong. Cost $45.00. 
69000 mi

US $557
engine shaking a lot. dealer found engine mount 3 broken. possible other engine mounts may need replacement due to normal wear and tear. 
76000 mi

US $405
car required new spark plugs and wires. CEL went away for 1 week only to come back and display additional misfires in all cylinders dealer performed a full Dyno testing and compression testing of engine. Damage fuel injectors, turbo needed rebuilt, damage VVT and cam shaft, oil in engine. stretched belts and misalligned pulleys 
120000 mi

US $450
Car died while driving. Tried to restart it with no luck. The timing chain broke and the overhead valves broke. Entire engine replaced under warranty. 
61580 mi

C $248
Check engine light = EGR Valve replaced under warranty. Cost at dealer was for 48 month maintenance visit-$248.00 
106020 mi Spun main crank bearing. Dealer trying to get Mazda Canada to assist in repair. They have taken the top end apart, submitted pictures. The top end was extremely clean. 
106620 mi

C $2500
Engine replacement: due to spun main bearing. Mazda stepped up and supplied a $6000 motor and dealer covered $1500 of the labor. 
112220 mi

C $375
Replace upper oxygen sensor 
35300 mi Broken EGR Valve tripped Check Engine light. Decided to reset and see iif it occurs again. Repair was quoted at $610. 

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2008 Mazda CX-7 4-door

4-cylinder automatic 4WD

80000 mi Timing was still off from July 2010 repair. They replaced timing chain/tensioner, valve cover gasket, front crank seal, engine mount. Reassembled engine. Replaced oil filter. Cleared code. 7 hrs of labor. The same day car was picked up from previous repair, the engine light came back on. Car was taken immediately back to the dealer. They found camshaft timing over retarded. Found PCM using stored values from previous VVT actuator. 
82000 mi Previous problems continuing. Belt Tensioner was seized and threw the drive belt. Replaced drive belt tensioner and drive belt. Charged battery, topped off coolant. 
106000 mi during regular maintenance check, an oil leak was noted but rather than repair after other problems, we sold it. 

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2007 Mazda CX-7

Engine not specified

£15000 Cam belt tensioner gave out leading to a complete engine failure. Also took out turbo, transfer case and starter motor. In the end I decided it was to costly to repair. 
46000 mi 1-2 second rattle at start up. VVT issues problem fixed under warranty.  
48000 mi

US $100
Oil Leak, Valve cover gasket, PCV, and another o ring on the on valve cover 
55800 mi Plastic melting smell comes from engine after 30min driving in highway. repair was done but not successfull VVT was replaced, due to some noises from engine 
23000 mi Starts hard, sputters, sometimes dies in morning. A big cloud of smoke comes out of the exhaust. I have to bring it back for they did not have time to fix the problem. 

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2007 Mazda CX-7 4dr SUV

turbocharged 244hp 2.3L I4 6-speed shiftable automatic FWD

150100 mi

US $290
EGR valve needed replacement  
153000 mi

US $400
Fuel injector replaced 
151000 mi

US $4138
Blown engine. It started with a blown water hose that caused the car to run hot. 
110000 mi

US $2500
Turbo failed 
44000 mi

US $593
Rattle in engine; ACTR.VARia;Washer; Bolt.Lock replaced. 
27900 mi

C $182
... turbo charger replaced under warranty(was leaking oil)and schedule maintenantce at 48000km 
95000 mi Solenoid problems....purchased extended warranty from this dealer....surprise, none of the repairs are covered by their warranty. 
127000 mi

US $60
Motormount 
130000 mi Valve purge solenoid was stuck open 
144000 mi

US $200
Timing chain and actuator replaced Oil cooler oil filter housing and gasket 
8000 mi Acceleration / throttle response not consistent 
117800 mi

C $975
Leaking engine oil excessively 
119660 mi Check engine light came on. Was showing timing chain slip. Did not repair. Just sold the car 
11000 mi Bad gas cap. Replaced gas cap under warranty. Bad O2 sensor. When replacing dealer also damaged catalytic converter. 
12000 mi Check engine light. Dealer diagnosed a flutter control valve in the intake manifold. Stability control warning light comes on and stays on during start ups on cold (ie below approx 10deg F) days. Light stays lit for entire trip. Dealer reported many cars do that, but Mazda currently does not have a fix. 
12000 mi Shutter valve malfunction. Dealer stated parts were in, but they weren't. Dealer attempted to modify part per TSB, but fix didn't work. Part is still on order. Bad O2 sensor. Part took 14 days to arrive. Flutter valve replaced. Stability Control light stays lit after cold starts (single digit temps and below). On this visit, problem as attributed to flutter valve issue. Problem has reocurred in March, however. 
3750 mi Cel for leaking gas cap, replace cap 
15000 mi Poor engine performance from a rest, engine knock when using premimum gas 
16000 mi Engine ecu updated with new software per TSB 
26000 mi Sometimes exhibits severe engine knock on reapplying throttle after slowing down. Mazda reflashed the ECU Car had severe engine knock on trip home from dealer. This time they replaced the fuel pump. seems to have repaired the problem. 
32000 mi Severe engine pinging upon light acceleration when using premimum fuel. 
33000 mi Engine knocking on premium fuel. Engine ECU updated with 2008 version and VVT actuator replaced. per TSB. 
3000 mi flash of software on ECU and TCM 
14880 mi Motor was a bit noisy at ignition. Replaced one of timing belt sprocket. 
98000 mi I bought his car in Nov 2015. It already had a rebuilt engine . From what the mechanic said ,it was the timing chain. Since I bought it it runs great . 
90830 mi error code noticed because of warning light. Regular test for emissions, but failed 
91140 mi

C $580
Reset OBDII error with Dealers OBDII machine, retested emissions, failed again. Reprogrammed OBDII system and Reset error code. Evaporative system and intake air temp were in the list of things. OBDII Air intake temp, reflashed the ECU, but not able to fix the OBDII Error. 
6000 mi Car bucked during acceleration. Replaced O2 sensor Reflashed Power Control Module and Transmission Control Module 
51800 mi White smoke out of tail pipe. Installed turbo vent kit and extend warranty service. 
56000 mi

US $87
Engine light came on. Diagnosed bad gas cap. Replaced with Mazda cap. 
50000 mi Car Turbo broke. With total cost of repair it was too expensive to fix. Decided to get a new car. 
20000 mi Engine also got a reflash for the ECU. 
34000 mi Tailpipes were leaving soot on rear bumper. New tips installed, problem solved. 
46000 mi Turbo seals leaked oil on intake and exhaust sides. ruined 02 sensor. Smoke poured out of the exhaust after 20 minutes of idling. Replace turbo and 02 sensor, turbo glowed neon orange. Took to 2nd dealer. Area manager said ok per computer. Still smokes. 
76300 mi Passenger motor mount leaked fluid all over causing clicking sounds when turning and knocking over bumps. Replaced mount under extended warranty. 
84700 mi

US $1200
VVT Actuator failed, and caused a rattle at startup. Reported under Extended warranty but said not a problem in 2010. Now it was bad enough another dealer, out of warranty said bad. $1200 for VVT, timing chain and more. Sucks. 

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2007 Mazda CX-7 4dr SUV

turbocharged 244hp 2.3L I4 6-speed shiftable automatic AWD

16000 mi The turbo on the car broke and had to be replaced 
1150 mi AT & CEL illuminated. Vehicle stuck in 3rd. TCM replaced & TCU reprogrammed. 
3000 mi After pulling onto a busy three-lane roadway, I got about a tenth of a mile and then the car just went dead. I had no acceleration or response, the car wasn't in any gear, and the power steering was gone. After a few minutes, it did restart.  
1000 mi TSB to flash the computer to address slow downs under 2500 RPM. 
22000 mi oxygen sensor failed and stuck to catalytic converter 
23000 mi o2 sensor and catalytic converter. o2 sensor and catalytic converter. machined brakes (warped again) 
39000 mi White steam at idle problem - was fixed by dealership under powertrain warranty 
44000 mi oil leaking from car 
90000 mi

US $800
Oil cooler leak. Guy at Mazda said it should have been recalled for it but never was. Known horrible issue. 
14000 mi Driver reported that on acceleration from a stop the throttle appeared to be stuck. Had to turn the car off to stop accelerating. 
116300 mi

US $10
Cleaned mass airflow sensor. Added fuel injector cleaner to fuel tank. 
130000 mi

US $2500
Had several oil leaks repaired.  
1300 mi Replaced an ignition coil pack that had failed. 
83000 mi

US $1500
Replaced turbo. Bearings went bad. Car is very hard on oil. Must run synthetic and change every 3k. Not exaggerating. Motor runs hot and creates sludge in oil. Poor design. 
71300 mi

C $790
Replaced EGR valve. 
37000 mi the previous owner did not do a good job w/maintaining oil change. There was a large amount of oil build up which require for a part to repair not exact what it was called. My vehicle had to flushed twice before replacing part. 
15000 mi VVT gear replaced. Engine rattled loudly on startup and felt lumpy on acceleration. Engine oil pan and trans pan were also removed and re-sealed as they were leaking slightly due to poor RTV application when built. 
57000 mi

US $300
CE light - was faulty gas cap, replaced cap and good! 
70000 mi

US $600
Timing chain tensioner and chain Broken motor mount Repair broken motor mount - fixed under my 3rd party extended warranty 
75500 mi

US $700
CE light - was EGR valve, was stuck closed. Dealer did repair. Not covered under Mazda, CPO or 3rd party extensive warranty. 
4 mi Replaced gas cap, no charge 
61000 mi

US $225
Water collected in the spark plug well and affected the spark coil. Engine misfired under load, Check Engine light came on, dirty oil, random misfire reported in computer. Removed water, replaced spark plug cap/coil, no further symptoms. 
3000 mi Re-flashing the PCM, because of "Lack of power" TSB 
2000 mi Check Engine Light - Gas cap replaced 
2500 mi CEL - Intake Swirl valve replaced 
62000 mi

US $1200
Stuck EGR valve 
77000 mi

US $800
Oxygen sensor and mass air flow sensor replaced 
26500 mi engine light came on, replaced a sensor & computer was upgraded 
27 mi

US $21500
car got stuck in third gear, they replaced a sensor 
1000 mi TSB for ECU reflash to improve acceleration TSB for lower door seals to replace with new design to seal doors better TSB for Gas Cap to prevent CEL due to old design causing these though not in my case 
87000 mi

US $2900
VVT Bolt and Chain loose. Updated Parts installed. But since it was now out of warranty I had to pay for this my self out of pocket. 
56000 mi

US $60
Exhaust system heat shield around catalytic convertor rattling. Upper half welds to lower half rusted. Heat shield between exhaust manifold and firewall/cowl in engine comp.deteriorated and came loose. Very flimsy...requires replacement. 
54560 mi

A $600
The engine mount was replaced and fluid from old mount was not cleaned from the engine area. I have never seen an engine filled with fluid before. 
66340 mi

A $790
There was a leaking oil filter which only needed to have a new seal and not the whole filter fitted. Mazda dealer used the excuse that there aren't seals available to which I said yes there is seals available. To which I told him rather than keep the repairs cheap and use a 50c seal you want to gouge the owners and charge $390.00 plus labour. Eventually he credited $144.00 for labour plus other incidentals of $15.00 but I told them I wasn't happy with their service and to top it off they stole my parking card which I use when I travel to work in the city. 
29140 mi Check Engine light came on.. was told had to pay 100 to hook it up and find the code for the problem.. would not pay so left light on.. dealer told me it could be gas cap.. after 3 days light went out.. 
19000 mi #4 coil and spark plugs replaced 
58000 mi Rattle on start up was diagnosed as timing chain issue. Replaced timing chain and related parts. Check engine light was on. Dealer went through process outlined in TSB and reflashed computer. 
65000 mi

US $175
Check engine light and occasional miss caused by bad/sticking EGR valve. Part replaced and symptoms now gone. 
65000 mi

US $150
Misfire returned. They cleaned the mass air sensor, but it did not fix it (it came back within a week). They told me they were going to charge me $150, but have not done it yet (and I suspect will not). I may try a different dealer this time.  
65000 mi Intermittent misfire cured by replacing spark plugs. Shop had recently replaced plugs with spec, but not OEM, plugs, which seemed to have caused the problem. Replaced with OEM plugs. Unclear if issue was plug type or one defective plug. 
6000 mi Hesitation/stumbling under hot or cold conditions. TSB available for fuel pump and/or PCM reprogram. Dealer states turbo lag is problem and vehicle acting normally. 
7000 mi Trans hunting for 5th and 6th during hi-way driving. Dealer flashed computer with new program. 
52000 mi

US $1
timing chain broke. got rid of car! 
16000 mi Vacuum pump failed 
34600 mi Replaced fuel filler pipe per Mazda TSB due to complaints of engine light on. 
49000 mi

US $2400
Turbocharger tube leaking 
27000 mi

US $5
Bad gas cap. New one ordered. 
38440 mi oil leaking; seal to be replaced seal replaced 
36000 mi EGR Valve failed. Dealer replaced and also replace the fuel filler neck. Extended warranty covered most of the repair and paid for the rental. Dealer also replaced oil pan gasket because of a leak they found. 

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2007 Mazda CX-7 4-door

turbocharged 4-cylinder automatic AWD

125000 mi

US $1600
Variable gear mechanism broke and timing belt went out. Noted timing belt concerns, loud knocking earlier 
5000 mi Check engine light was on, they could not replicate the emissions leak. 
60140 mi

C $1400
VVT replaced under warranty. 

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2007 Mazda CX-7 4-door

turbocharged 4-cylinder automatic 2WD

10000 mi when driven in very cold conditions +7f the check engine light came on 
18600 mi

US $107
Bad seals on the factory turbo. Dealer honoring the warranty. 

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Mazda CX-7 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 CX-7 problems occur, check out our car reliability stats.