CarComplaints.com Notes: The only area of real concern for 2012 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 for most CX-9 owners, 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.

4.3

definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
26,000 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2012 Mazda CX-9 brakes problems

brakes problem

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2012 Mazda CX-9 Owner Comments

problem #2

Mar 102017

CX-9

  • miles

A D V E R T I S E M E N T S

Takata recall received a letter on March 2017 called dealer number of times they keep giving me the run a round. As to when this air bag problem will be taken care of"?" I take my grandchildren to & from school & am concerned appreciate any help you can provide. R

- Gallatin, TN, USA

problem #1

Sep 092015

CX-9

  • 52,000 miles
Brakes prematurely failed after feeling numb and squishy. Upon diagnostic by a local mechanic, it was determined that the brake master cylinder had a leak. In addition, the ABS, traction control and emergency brake lights came on when the symptoms were present. Estimated cost of repair $1250.

- New York, NY, USA

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