| 1 | 0 | 3 | 4 | 3 | 4 |
2007 Mazda CX-9 repairs by problem area
Engine (15%)
Transmission and Drivetrain (12%)
Brakes and Traction Control (7%)
Suspension and Steering (22%)
Electrical and Air Conditioning (27%)
Paint, Rust, Leaks, Rattles, and Trim (11%)
Other (6%)
Chart based on 245 repairs.
2007 Mazda CX-9 engine repair cost distribution
$2500+ (8%)
$1000 - $2499 (11%)
$500 - $999 (14%)
$100 - $499 (17%)
< $100 (50%)
Chart based on 36 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.
2007 Mazda CX-9
Engine not specified
| 45000 mi US $80 |
Had oil leak almost the entire time I had it. I paid $80 for them to tell me that I didn't have leak. Sold with leak. |
2007 Mazda CX-9 4dr SUV
263-horsepower 3.5L V6 6-speed shiftable automatic FWD
| 78000 mi US $400 |
Hole in exhaust pipe at hanger |
| 79500 mi US $3850 |
Overheating, loss of power. Excessive noise. |
| 89000 mi US $2350 |
Camshaft |
| 117000 mi US $100 |
Failed/Melted coil pack (probably since I had not changed the plugs). Replaced coil and plugs (and intake plenum gaskets) |
| 118000 mi US $700 |
As described before, replacement of the coil did not fix my issue (melted coil). These engines can have PCM failure resulting in melted coil(s). I sent the PCM off to be repaired, all new coils and plugs... running perfect again. As described before, replacement of the coil did not fix my issue (melted coil). These engines can have PCM failure resulting in melted coil(s). I sent the PCM off to be repaired, all new coils and plugs... running perfect again. |
| 121500 mi US $70 |
I replaced all six coils with the previous repair, one coil failed. I replaced the coil and it seems to be running fine again. The coil was an aftermarket part. |
| 152000 mi US $50 |
Also, check engine light come on and off. One of the catalytic converter needs to be replaced soon. |
| 155000 mi US $50 |
Coil failed, replaced and good to go |
| 149000 mi US $6000 |
Original radiator had slow leak caused overheating of engine. Oil water mixed. Instead of head gasket fix, I decided on engine swap to hopefully last another 3-5 years... |
| 30000 mi | Smart key - sometimes steering column will not turn to start car. Happens about once a month. Tried both fobs and car has wheels straight. After a few minutes there is a click in the steering column and you can turn it to start. Key shows recognized. Read about transmission sensor causing CX9 to go into shut down when ascending long hills. They said that while they would not repair unless it actually happened first, that my vehicle was not equipped with the faulty sensor. |
| 36000 mi | Even though smart key fob recognized could not turn egnition switch |
| 101500 mi US $700 |
Throttle position sensor failed |
| 96000 mi US $2000 |
Faulty ECU |
2007 Mazda CX-9 4dr SUV
263-horsepower 3.5L V6 6-speed shiftable automatic AWD
| 137000 mi US $120 |
Engine light came on, diagnosis inconclusive of crankshaft position correlation, but nothing was found. After reset, engine light came on again a few days later, another service appointment is scheduled. |
| 140000 mi US $520 |
Replaced the Oil Pressure Sensor. Engine light still on after repair. Everything else checks out fine, so running it with the engine light on until something else appears. |
| 144000 mi | Antifreeze mixed with engine oil. Either water pump leaking into engine or one of the head gaskets. Decided not to invest the money into the vehicle and sold it. |
| 64000 mi US $537 |
Cylinder 3 fuel injector failed causing a miss and engine check light. |
| 96720 mi | Replaced and flushed cooling system. |
| 82000 mi US $2600 |
bank of coils failed and shorted the computer. Coils(6) and computer were replaced |
| 131000 mi US $500 |
Rats had chewed through the wiring harness for the fuel injectors. Wires were spliced |
| 200000 mi US $50 |
Loose heat shield near gas tank re-attached. These heat shields seem to come loose on a semi-regular basis. |
| 61200 mi | Radiator sprung a leak in the upper part of the radiator. I smelled the anti freeze and say dried pale green powder on the front grill work. We have an extended warranty that covered the cost of the repair. |
| 149000 mi US $1200 |
Also fluid added to transfer case and ECU removed and repaired and reinstalled. |
| 104000 mi US $25 |
Strange noise that was related to car movement. Turned out to be a heat shield on muffler hitting drive shaft. Solution was to bend it. |
| 41000 mi | Transmission control module failed. Vehicle would not shift gears and could only be driven in reverse or 2nd gear. |
| 99000 mi US $130 |
Front timing cover leaking oil - reseal |
| 119500 mi US $200 |
Heat shield under vehicle corroded at mounting points. Shield then dropped onto driveshaft. Heatshield was replaced. |
| 4000 mi | Engine oil sending unit. |
| 18000 mi | RPM FLUCTUATED WITH A/C ON. |
| 19000 mi | Throttle body successfully replaced. |
| 58500 mi | Heat shield above the drive train had 2 pop rivets fall out |
| 72000 mi US $174 |
Bad Fuel injector. I had an extended warranty that paid the majority of the cost. |
| 120000 mi US $2000 |
Replaced the full exhaust system |
| 10540 mi | Vehicle lost power on steep hills.. TSB issued 2008 May (only for certain vehicles withing a block of vins). Most consumers unaware of issue. My dealershp was surprised! TCM module updated with most recent software.. Vehicle runs like a charm! |
2007 Mazda CX-9 4-door
6-cylinder automatic 2WD
See TrueDelta's information for all SUVs
See TrueDelta's information for all Mazda models.
