| 1 | 0 | 3 | 4 | 3 | 4 |
2006 Mazda Mazda3 repairs by problem area
Engine (36%)
Transmission and Drivetrain (8%)
Brakes and Traction Control (5%)
Suspension and Steering (20%)
Electrical and Air Conditioning (18%)
Paint, Rust, Leaks, Rattles, and Trim (4%)
Other (9%)
Chart based on 372 repairs.
2006 Mazda Mazda3 engine repair cost distribution
$2500+ (2%)
$1000 - $2499 (7%)
$500 - $999 (11%)
$100 - $499 (46%)
< $100 (35%)
Chart based on 123 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.
2006 Mazda Mazda3
Engine not specified
| 107200 mi US $184 |
diagnostic check - P0455 - smoke EVAP ^stem - tightened all hoses, replaced fuel cap and reset computer |
| 116000 mi US $389 |
P2177 - replaced air/fuel ratio sensor - clear computer and ran drive cycle - 3 monitors still incp., upstream air/f |
| 48000 mi US $350 |
thermostat |
| 75000 mi | Some repair to some valve that was making me fail emissions... Check engine light came back on after my August repair - but the dealer bought it as is. |
2006 Mazda Mazda3 4dr Sedan
160-horsepower 2.3L I4 5-speed shiftable automatic FWD
| 12000 mi | Car sputtered occasionally when starting up and immediately driving without waiting for car to warm. Reflash described in TSB took care of it. |
| 44000 mi US $210 |
No.3 engine mount replaced |
| 54000 mi US $387 |
Replace stuck thermostat, reset CEL Replace stuck thermostat, reset CEL |
| 108000 mi US $200 |
Engine motor mount passenger side is faulty. |
| 70200 mi US $250 |
Replace one motor mount |
2006 Mazda Mazda3 4dr Sedan
160-horsepower 2.3L I4 5-speed manual FWD
| 32000 mi US $108 |
MAF Sensor failed and problem with MAF connector and wiring. |
| 91000 mi US $40 |
Bad thermostat. Caused vehicle to run cool and trigger MIL. |
| 95000 mi US $90 |
Replaced MAF |
| 122500 mi US $3300 |
Sudden onset of engine noise (clatter). Diagnosed as connecting rod and new engine needed. Remanufactured 2.3L engine has been ordered and should be delivered within 5-6 days. |
| 58000 mi US $410 |
Thermostat replacement. Cooling system flush. |
| 58000 mi US $158 |
Broken motor mount. |
| 46800 mi US $150 |
Right front motor mount needed replacement. |
| 109000 mi US $800 |
Engine making loud clatter at 158k miles, diagnosed as likely connecting rod bearing. Used engines and remanufactured engines very expensive, likely because this is a common problem with 2.3L MZR. Ordering an engine rebuild kit. |
| 135000 mi US $115 |
Check engine light codes P00037 or P00038. Replaced middle oxygen sensor. |
| 73000 mi US $300 |
thermostat replaced engine mount replaced |
| 51000 mi US $250 |
Bad thermostat caused check engine light. Thermostat replaced. |
| 65000 mi US $1000 |
Broken engine mount replaced |
| 102300 mi C $70 |
Failed connecting rod despite good maintenance history. Engine rebuild or replacement required. Repair not performed for cost reasons ($3000-6000) |
| 102300 mi C $4000 |
Broken connecting rod leading to catastrophic engine failure. Engine replaced with used motor. Mechanic believes it is related to earlier oil consumption issues as oil was consistently checked and changed as per manufacturers recs. |
| 106000 mi US $350 |
Thermostat Replaced. Water pump Replaced. |
2006 Mazda Mazda3 4dr Sedan
150-horsepower 2.0L I4 5-speed manual FWD
| 42160 mi | Engine light came on in October, rear O2 sensor broken. Estimate was 250 CAD, not repaired prior to accident. |
| 100300 mi US $16 |
CEL was for emissions leak. New gas cap corrected issue. |
| 107300 mi US $15 |
Needed to replace purge valve solenoid and connecting line. Common issue for MZ3s over 80k miles. Valve wears out, can become jammed with carbon buildup. Sticks open or closed. Can lower fuel economy, hard to start. Hoped it would also fix uneven idle. Uneven idle. Butterfly valve sticks in throttle body due to excess carbon buildup. To remedy, remove engine intake, remove throttle body, clean throttle body. Replace throttle body gasket as a preventative item. |
| 114500 mi US $264 |
Engine mount was worn. Replaced at 115k. Common issue for model between 90-120k miles. |
| 128300 mi US $35 |
Replaced thermostat myself at cost of 35 dollars. Took approx 1 hour total. Valve in thermostat was starting to stick, throwing CEL. |
| 139000 mi US $30 |
Purge valve solenoid died again, resulting in CEL. Believe previous replacement part was of low quality. |
| 155800 mi US $30 |
Replaced rear motor mount to quell vibrartion when increasing or decreasing throttle. Very quick, easy to fix. Less than 1 hour. Parts cost roughly $30. Wears out with time. |
| 175000 mi US $15 |
Engine code displayed about large emissions leak and lean cylinder 1. Have seen this before. Replaced gas cap. Has not displayed again. |
| 178000 mi US $50 |
Purge valve solenoid failed again after about 40,000 miles. Took 10 minutes to swap. |
| 64000 mi US $1100 |
New battery, replaced #3 motor mount and New tires |
| 65000 mi US $400 |
Thermostat needed to be replaced, |
| 73000 mi US $1100 |
Experiencing High Idle at start (2000+rpm), dealership recommended Fuel Injector Cleaning and new spark plugs, performed FI cleaning, problem continues, not sure new plugs will address issue? |
| 121000 mi US $1225 |
Replaced serpentine belts |
| 66960 mi C $370 |
engine mount had failed |
| 68200 mi C $300 |
Cooling system Engine cooling system (radiator, water pump, thermostat, heater core, etc.), repair |
2006 Mazda Mazda3 4dr Sedan
150-horsepower 2.0L I4 4-speed shiftable automatic FWD
| 79760 mi C $212 |
CEL came on,diagnosed as stuck thermostat. Thermostat replaced. |
| 43300 mi US $236 |
Check engine light came on, thermostat needed replacing. Part replaced, coolant added. |
| 49000 mi US $516 |
Engine light stayed on. Code indicated O2 Sensors needs replacement. |
| 72000 mi | Passenger Side Motor Mount Failure. Ordered OEM Part independently to cut costs. |
| 73000 mi US $245 |
Felt like a miss, replaced #3 motor mount. |
| 128700 mi US $480 |
2 motor mounts went bad |
| 129500 mi US $484 |
Leak on outlet fitting of radiator...had to wait 3 work days to get part and new gasket |
2006 Mazda Mazda3 4dr Hatch
160-horsepower 2.3L I4 5-speed shiftable automatic FWD
| 57000 mi US $630 |
Temp probe went out. |
| 36580 mi C $300 |
One of the motor mounts was leaking, replaced by dealer. |
| 66460 mi C $175 |
Replaced front oxygen sensor |
| 63860 mi C $80 |
Check Engine Light turned on for the thermostat. Replaced thermostat, along with AC, serpentine belt, and idler pulley. |
| 88100 mi US $700 |
Check Engine Light illuminated, problem was due to Oxygen Sensor 1 Bank 2. Sensor was replaced. |
| 88547 mi US $1347 |
Check engine light due to insufficient cooling. Replaced thermostat and housing. Also, there was mouse damage to the wiring harness that was repaired. |
| 144300 mi US $350 |
Vehicle threw error code for faulty thermostat. and also a broken engine mount. Warranty company covered all but the thermostat. |
| 147000 mi US $120 |
Observed oil on spark plug threads when replacing the spark plugs. This is common due to bad valve cover gasket design. Bought improved gasket and used blue Locktite on cover fasteners. |
| 156000 mi US $200 |
Replaced two exhaust heat shields. The forward heat shield, located above the catalytic converter, and the middle shield, located above the muffler. The forward shield is made of a heat resistant material which is sandwiched with foil. The existing shield had worn over the years and broke off of the fasteners. The middle shield was torn up due to travel over the rough gravel road where I live. |
| 180000 mi US $50 |
Small leak from the thermostat caused by the age of the thermostat gasket (was getting hard and shrinking). When the engine cooled, a vacuum would cause air to be sucked into the cooling system which resulted in running hot condition during later driving. Replaced the thermostat gasket and refilled the cooling system. Total time spent was approximately 4 hours so I could clean all surfaces thoroughly and inspect other components as the job progressed. |
| 44111 mi US $235 |
#3 Engine Mount Collapsed, Replace |
| 47000 mi US $350 |
Error code P0126 Coolant Failure due to stuck open thermostat. Drained coolant & removed thermostat. Replaced thermostat & refilled w/new coolant. Also replaced battery for a seond code, cranking low. Third code for dirty throttle. Previously aware of this from a July service visit. Punted again on this one. |
| 103300 mi US $50 |
Thermostat required replacing. I was able to do this myself for about $50 in parts including coolant. The whole project was easy and took less than 1 hour. It would be even quicker for an experienced shop. |
| 51000 mi US $195 |
Replaced thermostat due to P0126 check engine light, "coolant temperature always too low" |
| 85000 mi US $1 |
Engine mount replaced |
| 60100 mi US $200 |
Passenger side motor mount deteoriating, ordered a new one. Replaced battery. Passenger side motor mount deteriorating, ordered a new one. |
| 116400 mi US $1200 |
Fuel pump |
| 71000 mi US $135 |
Passenger side engine mount failed. I replaced it. |
| 121951 mi US $775 |
Replaced fuel pump. replaced fuel pump |
| 158000 mi US $283 |
replaced bad thermostat |
| 132451 mi US $532 |
Broken engine mount. Broken transmission mount. |
| 22940 mi | Throttle body replaced, only weeks after throttle body was serviced by dealer. |
2006 Mazda Mazda3 4dr Hatch
160-horsepower 2.3L I4 5-speed manual FWD
| 8000 mi | Engine would turn over but not start. Fuel pump replaced. |
| 35000 mi US $358 |
Check engine light was on. Coolant temp below temp ck and diag replaced thermostat assy and flushed cooling system |
| 129000 mi US $800 |
The clutch and flywheel were replaced. Ck engine light comes on intermittently. |
| 74700 mi US $100 |
Passenger side engine mount broken, needed to be replaced. |
| 47000 mi US $1050 |
Clutch failed and had to be towed to shop. Car being used by my daughter due to hurricane Sandy, her car got flooded in Brooklyn. Bill lists replacement of Lever, Disc, Pressure plate, towing, wheel balancing. I hope it included the throwout bearing. |
| 19000 mi | Check engine light for faulty hose. |
| 85000 mi US $325 |
Car needed 8 qts oil over 5000 miles. Dealer suggested replacing cylinder heads ($2500), possibly the long block ($6000). |
| 35340 mi | Motor mount leaked fluid, was replaced under warranty. Motor mount was near passenger side strut. |
| 126500 mi US $315 |
CEL code 1026. Thermostat replaced along with coolant flush |
| 127600 mi | CEL code for coolant low. Coolant level looked good so went to shop for diagnostic. Code reset and CEL has yet to return. Shop did not charge for diagnosis and reset. |
| 92000 mi | Vehicle reported check engine light, multiple warnings. Dealer diagnosed issue as faulty sensor. Oxygen sensor replaced. |
| 98000 mi US $55 |
Engine still has oil leak. It's getting worse, and oil changes and too offs last less and less. Everything in the car is great with the exception of the engine, which is destroyed. |
| 109000 mi | Engine failure today at 5PM. Vehicle is now inoperable. Avoid Mazda engines >2009, specially 2.3L variant. 2010+ okay. |
| 180200 mi US $148 |
Check engine came on. Took to shop and thermostat needed to be replaced |
| 211000 mi US $240 |
Engine lost power and check engine light came on. After numerous tests, the rear O2 sensor was found to be faulty and required replacement. |
| 212500 mi | Engine lost power and would not accelerate. Garage diagnosed problem as faulty fuel pump. Due to a garage employee error, the garage covered the entire cost of the repair. Total cost was $846.00. |
| 229000 mi | Total failure of exhaust system. Catalytic converters failed, oxygen sensors failed. |
| 130000 mi | Not sure what happened, head probably warped. Cooling system probably failed. |
| 81200 mi US $273 |
Motor mount on passenger side starting to separate. Adviser recommended replacement before complete failure occurred. Also said this particular mount is the one of the three that is stressed the most and may need replacement at some point |
| 56000 mi US $845 |
Wiring loose on oxygen sensors caused CEL, also new battery put in, not enough charge from current unit. Also included 60,000 mile service - power steering, trans fluid, rotate tires, align. CEL also caused by loose gas cap, advised $57 for 08 gas cap. |
| 46000 mi | Purge Control Valve |
| 125000 mi US $300 |
Loose and badly deteriorated exhaust shield. Probably could have been let go, but decided to fix it. Heat a bit weak, shop replaced thermostat and coolant. |
| 33000 mi | Used car check at dealer in August found oil filter housing leak. Said at time warranty problem. When brought in car after purchase for repair said really not warrantable problem, but honored warranty because of used car check. Repair done in November. |
| 35000 mi | Gas cap gasket leaking. Mazda dealer said old design of cap was faulty and replaced with redesigned cap. |
| 71700 mi US $45 |
Had a relatively minor problem with idle being uneven. Mechanic cleaned the throttle body and reset the computer. |
| 75000 mi US $330 |
CEL gave P0126 code, "Insufficient Coolant Temperature for Stable Operation." Shop verified thermostat had failed and replaced thermostat. |
| 98500 mi US $452 |
Wavering idle, wanted to stall starting from stop. Periodic diminished power hitting accelerator. CEL issued two codes for rich system: P0172, P2275. Mechanic diagnosed failed mass air flow sensor, cleaning didn't help, replaced sensor. |
| 121000 mi US $224 |
Replace right upper engine mount. Mount was broken. |
| 122000 mi US $260 |
Car having trouble starting. Cranks several times before starting or only on second try. The longer car sits, the more cranking it takes to start. Replaced spark plugs and cleaned fuel injector. Did not solve problem. Back in shop currently. |
| 122700 mi US $1010 |
Car cranking and taking long time to start. Previous repairs (spark plugs, fuel injector cleaning) did not help. This time (three days later) no pressure found in fuel line after engine off. Fuel pump and fuel pump o-ring replaced. |
| 128000 mi US $532 |
Sporadically losing power under load. 1st mechanic replaced PCV valve/PCV hose and purge valve, neither fixed it (no charge). 2nd mechanic replaced upstream O2 sensor--fixed but not sure if entirely (ac compressor reduces power a bit still). |
| 122000 mi US $747 |
Rattling noise and excessive engine noise underload, as well as clunky shifting and diminished power. All three engine/transmission mounts broken. Replaced. Made a huge difference in driveability of car and eliminated noise. |
| 148000 mi US $601 |
Car was idling rough, but only very slightly. Check engine light came on with P0300 code for multiple/random misfires. Shop said cylinder 2 and 4 were misfiring, due to faulty coils. Replaced all four coils and spark plugs. |
| 149600 mi US $135 |
Car a little sluggish, slightly underpowered up hills, on some shifts. Cleaned throttle body and idle motor. |
| 106000 mi US $50 |
Thermostat stuck open. Replaced thermostat and coolant lost during the replacement. |
| 106800 mi US $400 |
Replaced all 3 motor mounts. |
| 57000 mi US $74 |
Replace Engine Mount # 3 |
| 75000 mi US $9 |
Gas cap was leaking tripping a CEL - replaced gas cap w/ new aftermarket part. CEL reset on its own. |
| 100000 mi US $104 |
Replaced water pump pulley and main serpentine belt. Pulley was worn-out completely and was close to failure. |
| 106000 mi US $288 |
Replaced thermostat to clear P1028 CEL |
| 61380 mi | Engine mount leaking |
| 50000 mi | Engine began making a knocking/tapping sound over 3,000rpm. Dealer determined a faulty connecting rod and replaced engine under warranty (barely 1,000 miles from expiration!) |
| 63000 mi US $120 |
One of the liquid-filled engine mounts failed and required replacement. I had local shop repair it along with new brakes and two new tires (wear items). May be covered by TSB, investigating reimbursement. |
| 35540 mi C $90 |
Torn serpentine belt. |
| 83080 mi C $800 |
Broken engine mount, replaced mount |
| 25000 mi | Had the purge valve replaced. |
| 27000 mi | Had to have the purge valve replaced for the second time in three months |
| 54000 mi US $200 |
Water outlet valve |
| 97700 mi US $300 |
thermostat stuck open |
| 121100 mi US $300 |
Motor mount |
| 143000 mi US $150 |
Motor mount |
2006 Mazda Mazda3 4-door
4-cylinder automatic 2WD
| 123000 mi US $600 |
pcv needed to be changed--- it was eating oil |
| 140120 mi $300 |
fuel pump down. parts replaced |
| 38000 mi US $40 |
oil leak from broken oil plug seal |
See TrueDelta's information for all Sedans and Hatchbacks.
See TrueDelta's information for all Mazda models.
