2010 Mazda CX-9
Complaints about this year name brake far more often than the model's other years — 38% of them, about 3× the usual rate of 14.5%.
NHTSA opened a defect investigation into this model year.
| Complaints filed | 195 |
|---|---|
| Median for this model | 61 |
| Involving a crash | 7 |
| Involving a fire | 5 |
| Recalls | 6 |
| EPA combined | 17.5 mpg |
What the complaints were about
- stop — 29.7% of this year's complaints, against 11.1% across the model's other years (2.7×).
- pedal — 21% of this year's complaints, against 7.4% across the model's other years (2.8×).
- pressure — 12.3% of this year's complaints, against 4.9% across the model's other years (2.5×). Owners wrote it as: pressure, indicated, applying, harder.
Words owners used for the same problem are counted together, so a fault written four different ways is measured once. Grouped by which complaints they appear in, not by a list anyone wrote in advance.
Also unusual this year
- brake booster — 21% of complaints, 9× usual
- hissing — 16% of complaints, 11× usual
- brakes — 28% of complaints, 3× usual
What owners wrote
BRAKE BOOSTER FAILED AT 90K MILES. PEDAL IS EXTREMELY HARD TO PUSH AND HAS LITTLE BRAKE FORCE. ALONG WITH A LOUD HISSING NOISE FROM BRAKES. MAZDA SAID IT WAS PART THEIR SPECIAL SERVICE WARRANTY AND WOULD CHARGE FULL RATE TO FIX.
BRAKE BOOSTER, AS I DROVE MY CAR AND GET READY TO BRAKE IT GETS STIFF ALONG WITH A HISSING SOUND AND THE VEHICLE FEELS AS THOUGH IT IS STILL MOVING. I NOTICED IT AROUND APRIL AND THOUGHT I NEEDE BRAKES UNTIL TOLD OTHERS OF THE BRAKE BOOSTER ISSUE ONCE I TOOK M…
Verbatim from NHTSA complaint filings, with identifying details removed.
Recalls for this year
- 18V717000 AIR BAGS Fixed free of charge.
- 19V782000 AIR BAGS Fixed free of charge.
- 17V429000 AIR BAGS Fixed free of charge.
- 18V018000 AIR BAGS Fixed free of charge.
- 15V451000 SUSPENSION Fixed free of charge.
- 10V051000 SEATS Fixed free of charge.
How this was worked out
Every year of the Mazda CX-9 was compared against its own history rather than against other cars, which removes popularity and age from the answer — a common car draws more complaints at equal reliability, and an older one has had longer to accumulate them. A year is flagged when it drew at least 2.5× this model's median and at least 50 complaints.
This is a fault record, not a review. Nobody files a federal complaint to say the car was fine, so it shows what tends to go wrong — not whether owners liked it, and not whether it is a good car.
Source: NHTSA complaints, recalls and investigations, retrieved . Look this vehicle up directly on NHTSA's site to check anything here.
Own a 2010 Mazda CX-9? What happened to yours?
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