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.

2012 Mazda CX-9 Electrical Problems

Find something helpful? Spread the word.

Click on a problem below to read more.

Loading ...

one sec.

Stay Up to Date

Get notified about new defects, investigations, recalls & lawsuits for the 2012 Mazda CX-9:

Unsubscribe any time. We don't sell/share your email.

Compare Mazda CX-9 Model Years

Curious how the 2012 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.

Mazda CX-9 Overview

Add Your Complaint

Bump the CX-9 problem graphs up another notch. Get answers and make your voice heard!

Become a Fan & Spread the Word