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.

4.0

definitely annoying
Typical Repair Cost:
No data
Average Mileage:
30,000 miles
Total Complaints:
1 complaints

Most Common Solutions:

  1. seal replacement (1 reports)
2012 Mazda CX-9 windows / windshield problems

windows / windshield problem

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2012 Mazda CX-9 Owner Comments

problem #1

Jun 102015

CX-9 Touring AWD 3.7L V6

  • Automatic transmission
  • 30,000 miles

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

Sunroof leaked like a sieve when going through (any) type of car wash. Dealer replaced seal under warranty. Fixed the problem but I can tell that it's only a matter of time before the new seal wears out as well. Can already hear a whooshing noise from the sunroof as the car is dried in the wash. Sooner or later water will (once again) come raining down.

- Christopher M., Lansdale, PA, US

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