| 1 | 0 | 3 | 4 | 3 | 4 |
2012 Mazda Mazda3 repairs by problem area
Engine (28%)
Transmission and Drivetrain (9%)
Brakes and Traction Control (10%)
Suspension and Steering (16%)
Electrical and Air Conditioning (20%)
Paint, Rust, Leaks, Rattles, and Trim (9%)
Other (8%)
Chart based on 170 repairs.
2012 Mazda Mazda3 engine repair cost distribution
$2500+ (5%)
$1000 - $2499 (16%)
$500 - $999 (7%)
$100 - $499 (30%)
< $100 (43%)
Chart based on 44 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.
2012 Mazda MazdaSpeed3 4dr Hatch
turbocharged 263hp 2.3L I4 6-speed manual FWD
| 23300 mi | Serpentine belt missing chunk. |
| 57900 mi US $600 |
Replaced clutch,and flywaheel |
| 85000 mi US $5000 |
Cracked piston loss compression. Rebuild engine. The car is 450 whp, probably not fair to count this particular car in with stock mazdaspeed3's in my opinion. |
| 20000 mi US $1300 |
HPFP was no longer delivering required fuel. Had to purchase and install upgraded pump. |
| 102300 mi C $9000 |
Blown engine replaced with a crate engine |
| 104780 mi C $300 |
Emission problem engine light on. |
2012 Mazda Mazda3
Engine not specified
| 55800 mi C $450 |
Timing belt broke while driving and battery was drained due to engine trying to keep engine safe. |
2012 Mazda Mazda3 4dr Sedan
167-horsepower 2.5L I4 6-speed manual FWD
| 26000 mi US $1100 |
Before I bought the car with 17,xxx miles, I was aware that the 2.5 L with a 6-speed has a notoriously weak clutch, at 26K miles it was gone. No harsh driving |
| 34000 mi US $1 |
The factory clutch wore out early, as is a known problem with this model / engine combo. I put a stage 1 aftermarket clutch in. It failed in 9000 miles. I went back to an OEM factory clutch setup |
2012 Mazda Mazda3 4dr Sedan
155-horsepower 2.0L I4 6-speed shiftable automatic FWD
| 57000 mi | Skyactiv-equipped cars had a known issue in which the headlights/dash lights would pulse when the brakes are applied. I took it in and the dealer reprogrammed the PCM, which is the fix for this issue. |
| 90000 mi US $500 |
Exhaust system sounds like it has a leak. I will need to have it looked at and possible replace the muffler and exhaust pipe. Exhaust had a leak where the hanger attached. A section of exhaust pipe was cut out and a new section was welded in. |
| 141000 mi US $200 |
Oil pressure switch started leaking oil. Fairly inexpensive repair, ~$200 including oil change. |
| 39300 mi US $150 |
Check engine light. Pulled code for small evap leak. Gas cap replaced by dealership, issue resolved. |
| 33000 mi | The belts shredded near the dealership and I managed to get into the parking lot before the engine died completely. The belts shredded again three weeks later. The repairs took almost a week with no reason provided as to why the belts broke two separate times. |
| 24480 mi | engine was started @ -25 C went to red line would not idle down,dealer had for 1.5 days said mat held throttle down Checked prior to tow away and mat was fine.It would seem dealer could not find the problem and had to blame it on something. |
2012 Mazda Mazda3 4dr Sedan
155-horsepower 2.0L I4 6-speed manual FWD
| 4100 mi | Check engine light. Reset, no further issues. |
| 46040 mi | Ecm problem, car running in limp mode.Dealer said cannot fix the problem. Tried a different flash onto ecm |
| 54020 mi C $80 |
Clogged air filter. Replaced with upgrade. K&N air filter. |
| 97340 mi C $1125 |
Spark plugs replaced (supplied) |
| 101060 mi C $349 |
2 sections of exhaust pipe rusted out at the hanger welds were replaced |
2012 Mazda Mazda3 4dr Sedan
148-horsepower 2.0L I4 5-speed shiftable automatic FWD
| 6200 mi | Coolant leakage |
| 75000 mi US $150 |
Engine mounts replaced, I noticed a lack of traction so I looked online and determined this to be the cause. When I looked I could see the top one leaking fluid. This repair fixed my problem. |
2012 Mazda Mazda3 4dr Hatch
155-horsepower 2.0L I4 6-speed shiftable automatic FWD
| 100000 mi US $300 |
Oil pressure sensor failed, and was leaking. |
| 34000 mi US $100 |
During an inspection as part of a service, a large amount of buildup was discovered on the throttle body, and it was cleaned. Technician noted that due to the aggressive EGR system on this engine, this is not uncommon. |
| 96300 mi | Pending misfire stored fault code, with flashing CEL on power-on. Cleared code, inspected and cleaned throttle body. |
| 168000 mi US $350 |
Check engine light for lean condition and implausible O2 sensor readings. Replaced O2 sensor. Sensor was bent, and nobody knows how it got that way. |
| 168800 mi US $1800 |
Replace catalytic converter. |
| 185 mi US $1500 |
Replace all coolant hoses/lines, thermostat housing, and thermostat due to pervasive cracking |
| 191000 mi US $440 |
Replace offside engine mount |
| 127000 mi US $70 |
Valve cover gasket Throttle body cleaning |
| 44700 mi US $296 |
Mass air flow sensor died. Car was stranded. Diagnosed and replaced same day. |
| 35800 mi | Transmission slow going into reverse. Reprogrammed per TSB. |
| 38300 mi | Oil pan gasket developed leak - fixed at no cost by repair shop |
| 69000 mi US $1000 |
Engine mount #4 was cracked completely through and needed to be replaced. |
| 46000 mi US $75 |
cracked front crank seal |
| 46240 mi US $297 |
VVT actuator o-ring |
| 60000 mi US $1020 |
#3 motor mount, brake fluid flush, drive belt tensioner, fuel injection service |
| 71000 mi | repair oil leak caused by dealer |
2012 Mazda Mazda3 4dr Hatch
155-horsepower 2.0L I4 6-speed manual FWD
| 53940 mi | Replaced failed engine mount. |
| 165000 mi US $440 |
Replaces air mass flow sensor |
| 114080 mi C $580 |
Rear engine mount |
| 8900 mi | Engine light was on. Computer needed firmware update. |
| 5000 mi | Have to turn key twice to start car. |
See TrueDelta's information for all Sedans and Hatchbacks.
See TrueDelta's information for all Mazda models.
