2011 Mazda CX-9
Problems & Complaints
CarComplaints.com Notes: The only area of real concern for 2011 Mazda CX-9 owners is the brake booster.
In 2014, Mazda extended the warranty on the 2007-2013 CX-9 brake booster to 7 years / 90,000 miles. However this extended warranty has expired, so buyer beware.
This Mazda CX-9 brake booster failure isn't terrible in terms of repair cost — it "only" costs $550 average to fix. However it is a safety issue when the brake booster fails as it increases stopping distance. Owners have reported having to stomp on the brake pedal, & crashes/injuries have been reported due to this CX-9 brake booster defect.
Worst 2011 Mazda CX-9 Problems by Category
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- brakes problems17NHTSA complaints: 102
- cooling system problems3
- drivetrain problems3NHTSA complaints: 23
- engine problems3NHTSA complaints: 14
- transmission problems3
- AC / heater problems2
- interior accessories problems2NHTSA complaints: 2
- body / paint problems1
- fuel system problems1NHTSA complaints: 1
- wheels / hubs problems1NHTSA complaints: 3
- seat belts / air bags problemsNHTSA: 22
- suspension problemsNHTSA: 6
- miscellaneous problemsNHTSA: 5
- electrical problemsNHTSA: 4
- steering problemsNHTSA: 4
- lights problemsNHTSA: 3
- windows / windshield problemsNHTSA: 2
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Compare Mazda CX-9 Model Years
Curious how the 2011 CX-9 compares to other years?
Check out our Mazda CX-9 overview to see the most problematic years, worst problems and most recently reported complaints with the CX-9.