| 1 | 0 | 3 | 4 | 3 | 4 |
2007 Mazda Mazda3 repairs by problem area
Engine (34%)
Transmission and Drivetrain (7%)
Brakes and Traction Control (5%)
Suspension and Steering (29%)
Electrical and Air Conditioning (16%)
Paint, Rust, Leaks, Rattles, and Trim (5%)
Other (3%)
Chart based on 482 repairs.
2007 Mazda Mazda3 engine repair cost distribution
$2500+ (1%)
$1000 - $2499 (6%)
$500 - $999 (10%)
$100 - $499 (32%)
< $100 (51%)
Chart based on 142 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.
2007 Mazda MazdaSpeed3 4dr Hatch
turbocharged 263hp 2.3L I4 6-speed manual FWD
| 58000 mi US $700 |
EGR replaced. Thermostat replaced. |
| 54300 mi US $290 |
PCV valve stuck open |
| 44000 mi | Loud rattle at start up TSB preformed under powertrain warranty. VARIABLE VALVE TIMING (VVT) NOISE WHEN STARTING ENGINE Bulletin No: 01-002/08 Last Issued: 01/16/2008 |
| 51000 mi | bad heated O2 sensor replaced heated O2 sensor myself rather than having the dealer do it |
| 64000 mi | EGR Valve was clogged with carbon build up and debris, threw a P0401 Code. Cleaned EGR valve of carbon, check engine light went off, light returned about 1 month later, same code. Unaware of how to resolve problem. Fuel prob running rich. |
| 3000 mi | reflashed ECU as per latest TSB [vehicle idles rough] |
| 9000 mi | High-pressure fuel pump was not delivering sufficient pressure. Pump was replaced. |
| 10000 mi US $110 |
Heat shield covering heater hoses in engine compartment was damaged (torn). |
| 16400 mi | 1. Defective fuel purge valve was replaced under warranty. 2. Rust was discovered under both roof rails. Areas were repainted and both rubber roof rails were replaced under warranty. |
| 18000 mi | Engine rattled on start-up. Diagnosed as a problem with the variable-valve adjustment mechanism. Problem was repaired under original manufacturer's warranty. |
| 31000 mi US $313 |
Check Engine light came on. Took vehicle in to dealer. Dealer analyzed problem, and discovered that the Bank 1 oxygen sensor was bad. Replaced oxygen sensor. Problem has not recurred. Dealer commented that sensor failure at 24k is unusual |
| 32000 mi | The passenger-side motor-mount burst and its damping fluid leaked out. The mount was replaced by the dealer under warranty. |
| 37000 mi | For the second time in 3 years, the engine mounts failed, resulting in catastrophic engine failure. Awaiting satisfactory solution. |
| 57300 mi | Factory service order ("recall") to address leaking turbocharger seals. Two levels - does turbo need replacing? or merely change seals. They changed my seals, no more problems. Symptom is blue smoke when accelerating after idle. |
| 65600 mi | Turbo seal, which had been replaced before, was leking a bit, resulting in the notorious grey/blue smoke with acceleration after idle. They cleaned seal area, and this seems to have helped. |
| 75000 mi | Trip in summer. Oil level from "full" to almost empty in 500 miles. Shop there could not find leak. Didn't burn any oil in 1000 mile return. My shop asked me to monitor. Burning (?) about a quart every 750, will report... |
| 67300 mi | As reported before, burning oil. Rings bad. Luckily, had ext. warranty: they'll replace entire long block most of engine. Don't fault Mazda, good car, s*** happens (material failure, bad day on assembly line, whatever.... :) new engine :) |
| 88500 mi | Fuel injector failure. Extended warranty covered |
| 92100 mi | 2nd fuel injector failure (different cylinder than April's fuel injector failure |
| 102000 mi US $1500 |
Two injectors had gone out earlier, but covered by extended warranty. That ended 2000 miles ago, now these went. Maybe because of nature of engine (hi po) 100 is all I might expect out of injectors, but disappointing and expensive. |
| 48000 mi | Variable Valve Timing Actuator became noisy on start up. Replaced per Mazda TSB. |
| 26633 mi | Replace turbocharger |
| 71000 mi US $700 |
EGR valve clogged, tripping CEL. EGR valve replaced. |
| 131000 mi US $300 |
CEL illuminated; fault code was: "Low Coolant Temperature" Dealer replaced thermostat and re-flashed PCM. |
| 24000 mi | Check engine light saying that the engine was running lean. |
| 1860 mi | Sticky Throttle Actuator for Choke. On the verge of TSB |
| 2480 mi | MAF sensor malfunction in cold weather. |
| 13020 mi | Shutter valve replaced and ECU reprogrammed to new specs. |
| 65000 mi US $1800 |
Replaced factory turbo. |
| 23000 mi US $45 |
Racing at Thunderhill, Willows, CA. On track the check engine light came on, (P700), misfire code. Mechanic cleared code and light has not come on since. |
| 21080 mi | Purge Solenoid tripped CEL..Took it to dealership, they replaced it within the hour at NO cost |
| 28520 mi C $62 |
Turbo was smoking. Took it to dealership. Warranty covered parts and labour. Received car back next day |
| 57000 mi | VVT actuator was replaced under warranty. This is a fairly common problem and there is a TSB. |
| 68200 mi | sounds like the timing chain guide needs replacement which is supposedly common on these vehicles |
| 48000 mi US $500 |
02 sensor that apparantly isn't covered under the powertrain warranty. The dealer won't tell the problem and if it's covered under warranty until you agree to pay 99$ for an inspection. And will only cover the 99$ if the problem is warranty |
| 63860 mi C $240 |
Radiator hose split, causing overheating |
| 70220 mi C $200 |
Pin hole in radiator, leaking |
| 75000 mi US $1283 |
Timing chain was loose. Timing chain tensioner, guide, crank case gasket replaced. Simple fix. Costly labor. |
| 1000 mi | Gas gauge was not working when tank was filled for delivery. After taking delivery I noticed that at 0 mph I was really going about 20 mph. After taking the car back I was told that the tech probably bumped the needle when repairing the gas gauge. |
| 41000 mi | Variable Valve Timing Actuator had become loose and caused a rattle on starting the engine which I had not noticed but the service tech did notice. Actuator was tightened and the timing chain which had become stretched was replaced. |
| 45000 mi | Fuel pump in the gas tank failed and also shorted out the wiring harness. There was only one wiring harness in the U.S. in California. The interior of the car had to be removed to replace the harness. The pump and harness were successfully replaced and ev |
| 47000 mi | Engine started to overheat in 75 degree weather. Water pump and thermostat were replaced. |
| 64000 mi US $330 |
Replace motor mount |
| 72000 mi US $141 |
Battery died, car ran rough. Brought into shop, ECU reset and throttle body cleaned. Took care of rough idle, car runs smoother and gets slightly better gas mileage |
| 6000 mi | Replaced one spark plug & coil based on ECU data. Also reflashed ECU to latest firmware revision G. |
| 11000 mi | CEL for intake runner flap. Was subject of a recall anyway; replaced actuator. Also updated ECU firmware on another recall. |
| 40000 mi | EGR valve malfunction Test system crashed during ECU firmware update, destroying ECU. ECU had to be returned to factory for repair and all data re-entered and updated. |
| 68000 mi US $81 |
Replaced evap solenoid |
| 87300 mi US $1000 |
VVT Actuator and timing chain failure |
| 11000 mi | Motor mount failed causing motor to 'fall'. Driver side axle popped out, exhaust tweaked. All fixed over Thanksgiving weekend. |
| 56200 mi US $200 |
Got CEL with code P0128: coolant running cold. Thermostat was stuck open and was replaced (OEM part ~$60). Apparently a common problem in Mazda 3's. Fuel economy improved after fix. |
| 96000 mi US $100 |
Engine sounded would make a loud "zipping" sound on start-up. Independent mechanic tightened up the timing chain, but did not resolve the problem. Turns out it was the failed VVT actuator that is common in this generation of mazda turbo engines. Also replaced worn motor mount #3. Engine made zipping zound on start. Mechanic diagnosed it as a loose timing chain and adjusted it. |
| 126000 mi US $650 |
Turbo seal went, causing oil to burn off in the down pipe - replaced turbo with aftermarket turbo (BNR S1). Car runs great now. |
| 83000 mi | Car went into "Limp mode" and would barely move. parked it and tried to start it again 24 hours later and problem disappeared. |
| 96000 mi | CEL Light for insufficient Coolant temperature. Replaced the thermostat. soot had collected and was preventing the EGR valve from operating correctly and was throwing a CEL code. Dissembled and cleaned the EGR valve. |
| 110000 mi US $200 |
The Drivers side Engine mount bolt snapped while driving. this is a known issue and there was a recall which the dealer did not install the updated part when the recall was performed originally. |
| 3000 mi | Heard clunking in engine bay during hard accel to freeway. Asked dealer to check engine mount under battery tray for proper torque. Bolt was checked and confirmed to be tight. No repairs made. |
2007 Mazda Mazda3
Engine not specified
| 3000 mi | My car was declared a lemon. I won the case with my lawyer and Mazda is buying the car back. What piece of junk. I will never buy another Mazda (Ford) again. |
2007 Mazda Mazda3 4dr Sedan
156-horsepower 2.3L I4 5-speed shiftable automatic FWD
| 179500 mi US $3600 |
Burning oil, threw a rod and damaged timing belt |
| 20000 mi US $200 |
code 2177, dealer charged for replacing purge valve. Car was driven < 10 miles, Check engine light came back on, same code. Dealer replaced fuel pump, this repair covered by warranty because of low mileage. Light has not come back on yet |
| 91760 mi C $550 |
check engine light; thermostat housing leaking fluid; replaced it,flushed the coolant system; inspection result mentioned that there's a problem with the O2 sensor as well(code PO138, may need further repairs (throttle service, cam reset). |
| 106300 mi US $92 |
Powertrain control module went bad; $25 replacement part from Autozone and a mom & pop auto repair shop brought an end to the issue. |
| 108100 mi US $60 |
replaced thermostat due to thermostat failure |
| 45000 mi US $225 |
Check engine light. Diagnosed as "Small evaporative leak" Smoke check indicated a solenoid valve had malfunctioned. |
| 69300 mi US $138 |
Check Engine light came on. Diagnosed as a slow responding thermostat. Changed thermostat. |
| 32000 mi | when starting engine rpm reaches 1500 then nearly goes down to 0 and then goes back up normally or engine turns off. diagnosed a problem with the purge valve so it was replaced. |
| 60000 mi US $160 |
replaced motor mount #3 |
| 66200 mi US $265 |
problem diagnosed at the dealer. code P0126. ECT sensor, thermostat, PCM reprogram. ECT sensor and thermostat were replaced at a private shop. |
2007 Mazda Mazda3 4dr Sedan
156-horsepower 2.3L I4 5-speed manual FWD
| 80050 mi US $90 |
Replaced #3 engine mount. |
| 91000 mi US $57 |
Thermostat stuck open |
| 93000 mi US $275 |
Defective Sachs clutch kit--rivets of clutch disc on pressure plate side too long, caused premature failure. Installed about 72k when friction material on orig. disintegrated. Clutch kit replaced under lifetime materials warranty. Mechanic split labor cos |
| 80600 mi C $120 |
CEL on for insufficient coolant temp. Replaced thermostat and flushed cooling system. Check engine light has not returned. |
| 142000 mi US $519 |
Car was reading P0126 code, citing "insufficient coolant temperature for stable operation" on and off since fall 2011. Diagnostics were preformed, and replacement of thermostat solved the problem. |
| 70000 mi | Replace Solenoid Purge Valve Replace Solenoid Purge Valve |
| 73000 mi | When you do a cold start you coud hear a noise for 2 seconds. Timing chain has been replaced. |
| 120000 mi US $70 |
Replace fuel purge valve causing engine stumble and cel. |
| 133200 mi | Replace passenger side motor mount and one other motor mount. |
| 155000 mi US $45 |
Replace thermostat |
| 164000 mi US $90 |
Replaced vapor canister purge valve |
2007 Mazda Mazda3 4dr Sedan
148-horsepower 2.0L I4 5-speed manual FWD
| 74060 mi C $900 |
Replaced clutch. |
| 33000 mi US $772 |
Faulty oxygen sensor. |
| 90000 mi US $40 |
Check engine light came on. Code P0172-thermostat stuck open. Replaced thermostat and engine cooling temperature sensor. Problem resolved. |
| 35000 mi US $264 |
Check engine light came on. Car shows no sign of any issues. Problem turns out to be the coolant temperature sensor. Part replaced, problem solved. |
2007 Mazda Mazda3 4dr Sedan
148-horsepower 2.0L I4 4-speed shiftable automatic FWD
| 58000 mi US $800 |
MIL on - DTC P2404: Evaporative system leak detection pump replaced |
| 71000 mi US $130 |
#3 Engine Mount Broken. Replace #3 Engine Mount BBM4-39-060D |
| 105400 mi C $425 |
Replaced front heated 02 sensor |
| 143220 mi C $1350 |
Exhaust Manifold and sensors, gaskets |
| 39680 mi | Gasket on thermostat or around that area where heater core hoses joint. |
| 103300 mi US $450 |
Engine light on. Owner cleaned sensor as advised in forum. Light went out then came back on. We then replaced sensor. LIght still on and failed emission test. Took to firestone who replaced a main value / sensor. $450. |
| 58800 mi US $60 |
thermostat was stuck open, had to replace the thermostat |
| 55000 mi US $68 |
Passenger side motor mount needed to be replaced |
| 49700 mi US $315 |
check engine light, replaced evaporation purge solinoid |
| 52500 mi US $300 |
stuck open thermostat replacement |
| 16120 mi C $212 |
Ping in engine that dealer denies is there. Once weather gets better, will take car to another dealer. |
| 56420 mi C $500 |
Engine mount leaking. Fixed under warranty. Front brakes and rotors replaced, Oil changed. |
| 9300 mi | Rough idle Flashed EPROM and corrected it. |
| 9920 mi | Car would run rough at times. Shop did firmware update but did not fix. Tested it again and indicated a throttle body would need to be replaced. Had to order part and will need to bring car back again |
| 9920 mi | The car continued to have a ruff idle at certain times. They replaced the throttle body and it has corrected the problem. |
| 13000 mi | Engine noise rattle/clatter when in motion at low RPM and slight throttle. |
| 18000 mi | Code P2404, Evap system malfunction. Dealer was ultimately unable to diagnose the cause for the code. They cleared the code and did a test drive. The code did not reappear. |
| 33000 mi | Code P2404, evap pump circuit malfunction. Cleared and it didn't re-appear. |
| 35000 mi | CEL for evap leak. No leaks found in system upon inspection. Evap leak detection pump replaced. |
| 129000 mi US $300 |
Car stalled a few times and restarted no problem- it was thought to be from the car not being driven recently- first thought was old fuel we did the fuel cleaner additive for the gas- it didn’t fix it so we had the fuel injectors cleaned and they replaced the spark plugs as a preventative measure in case it was that (mechanic said those 2 were most likely the issue). |
| 13640 mi | Car would not heat up.. Thermostat replaced..I was told the problem was fixed but it wasn't.. Cooling system was flushed problem seems to be ok now.. |
| 98580 mi C $700 |
CEL on , Diagnosed as stuck valve inside intake manifold. Intake manifold replaced. |
| 119660 mi C $450 |
P0126 code replaced thermostat and coolant sensor |
| 60000 mi US $120 |
Purge valve replaced; check engine light triggered, slight engine hesitation noted on starting, purge valve replaced without incident in less than one day |
2007 Mazda Mazda3 4dr Hatch
156-horsepower 2.3L I4 5-speed shiftable automatic FWD
| 138880 mi C $190 |
Replaced exhaust flex pipe. |
| 114080 mi C $248 |
Thermostat stuck open, replaced thermostat at reg oil change tire rotation |
| 86000 mi US $150 |
Experienced sudden hesitation/shuddering at idle and under acceleration. CEL came on. Code read a cylinder 1 misfire. Inspected spark plug and ignition coil on cylinder 1 - replaced coil and all spark plugs. |
| 91000 mi US $500 |
Passenger side engine mount was totally blown (leaking black fluid). Mount was replaced. Greatly reduced highway-speed (50mph+) vibration issues. |
| 92000 mi US $95 |
Check-Engine Light on. Car would not start after fillups. Problem was purge valve. Replaced, and fixed those problems. |
| 162000 mi US $45 |
Pinhole leak in plastic coolant overflow/recovery bottle led to loss of system pressure and car puked coolant when warm. Ordered factory Mazda part and installed it myself. No further issues. |
| 170000 mi US $60 |
Replaced failed passenger side motor mount. Should have been a quick job but had to cut old one off due to frozen stud/nut and source replacement hardware. This mount is liquid-filled to dampen engine vibration and is a known failure point. Mine leaked out all the oil and then separated, resulting in metal-to-metal contact. |
| 7440 mi | Very sluggish shifting from 1st to 2nd gear (in both automatic and manual mode), changing gears too early when in automatic mode. Software update fixed the problems. Airbag light was on as well and parts (airbag module) were ordered. These were insta |
| 55300 mi C $1600 |
and motor mount had to be replaced. |
| 12000 mi | Engine cranks excessively when cold. Dealer checked and stated it was normal!! |
| 52000 mi US $182 |
Thermostat stuck open, replacement required |
| 36000 mi | Leaking motor mount. |
| 57200 mi US $60 |
Changed a stuck open thermostat. |
| 66200 mi US $300 |
check engine light randomly going on and off at times for no apparent reason .. Did not affect car's driving Turns out Thermostat needed replacing |
| 94240 mi C $159 |
Upper engine mount was cracked and leaking fluid. Upper engine mount was replaced. |
| 12000 mi | engine sputters and stalls in morning when cool at first startup. |
| 52700 mi C $270 |
Recommended and peformed throttle body clean, didn't help the sluggish feeling. I noted that I haven't filled up at Shell for past 2 months. Filled up at Shell, feels better, going to run Gumout and fillup at Shell only (not a shell ad!) |
| 57800 mi | Rear engine mount damaged by repair tech |
| 64500 mi US $100 |
Car threw trouble codes P0442 (evaporative emissions leak) and P2187 (System too lean at idle bank1). Replaced purge valve solenoid. |
| 18000 mi | The pump that sends fumes back to the engine to be burned went out. I forgot what it's called. |
| 42000 mi US $650 |
Thermostat was bad. |
| 76500 mi US $70 |
Check engine light came on. Code indicated low coolant temp and thermostat was the most likely fault. Changed out thermostat with new OEM one. Flush coolant. Light went off. |
| 86500 mi US $1060 |
Noticed fuel odor near rear of car and saw fuel leak near gas tank under car. Difficult starting. Fuel pump inside gas tank was leaking. They had to drop tank and replace fuel pump. |
| 96700 mi US $230 |
Passenger side engine mount failed. High vibration and knocking sound at idle. Tell-tale dark hydraulic fluid under it. Replaced with OEM. Only hour to fix. |
2007 Mazda Mazda3 4dr Hatch
156-horsepower 2.3L I4 5-speed manual FWD
| 118000 mi US $40 |
Had CEL, code said Insufficient coolant temp for stable operation. In other words thermostat was sticking partially open. Replaced thermostat, topped up coolant and reset CEL. Problem solved. |
| 96000 mi US $4800 |
Spun bearing; engine replaced. |
| 7000 mi | Vehicle would not start one day. I tried again later the same day, but it still would not start. I called the Mazda roadside assistance number and arranged for the vehicle to be towed to the dealer. The next day the dealer called me and said the car ... |
| 42700 mi US $40 |
Lube shop stripped oil filter cap during oil change last year. Had part replaced by dealer as a part of this oil and filter change. |
| 104000 mi US $60 |
Replaced thermostat due to check engine light. |
| 143000 mi US $435 |
The timing chain cover was leaking oil. |
| 185000 mi | The thermostat was sticking open and triggered the check engine light. |
| 209700 mi US $150 |
The clutch switch needed to be replaced and the throttle body needed to be cleaned. |
| 49600 mi | Rear oxygen sensor replaced after intermittent check engine light. |
| 57660 mi C $313 |
Check Engine Light on, Code P0126 - Replaced thermostat and coolant |
| 107880 mi C $100 |
check engine light on, DTC indicated upstream O2 sensor faulty. replaced sensor |
| 126580 mi C $150 |
DTC P0401 low egr flow. Cleaned EGR value. |
| 70000 mi US $300 |
Alternator and Water Pump belt Tensioner with bearing wear and poor retraction. Tensioner replaced. |
| 113000 mi US $200 |
Check engine light on for a while. Losing heat at high way speeds in the cold. Replaced thermostat. All is well now. |
| 33000 mi | Replace leaking oil pan gasket. |
See TrueDelta's information for all Sedans and Hatchbacks.
See TrueDelta's information for all Mazda models.
