2011 Mazda CX-9
Complaints about this year name hissing far more often than the model's other years — 24% of them, about 17× the usual rate of 1.4%.
NHTSA opened a defect investigation into this model year.
| Complaints filed | 170 |
|---|---|
| Median for this model | 61 |
| Involving a crash | 7 |
| Involving a fire | 3 |
| Recalls | 4 |
| EPA combined | 19 mpg |
What the complaints were about
- brake — 47.6% of this year's complaints, against 16.7% across the model's other years (2.9×).
- pedal — 34.7% of this year's complaints, against 7.4% across the model's other years (4.7×).
- stop — 38.8% of this year's complaints, against 11.1% across the model's other years (3.5×).
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 — 48% of complaints, 3× usual
- brakes — 39% of complaints, 4× usual
- brake pedal — 28% of complaints, 7× usual
What owners wrote
LOSS OF POWER BRAKES. EXCESSIVE BRAKE PEDAL PRESSURE NEEDED TO STOP VEHICLE. HISSING NOISE WHEN DEPRESSING BRAKE PEDAL.
BRAKE PEDAL IS ROCK HARD AND TAKES IMMENSE PRESSURE TO PRESS DOWN TO GET BRAKES TO ENGAGE. HISSING NOISE COMING FROM UNDER DASH IT SEEMS.
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.
- 15V451000 SUSPENSION 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 2011 Mazda CX-9? What happened to yours?
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