CarComplaints.com Notes: The only area of real concern for 2010 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.

1.4

hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
128,000 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.

2010 Mazda CX-9 fuel system problems

fuel system problem

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2010 Mazda CX-9 Owner Comments

problem #1

Sep 302019

CX-9

  • 128,000 miles

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

I was driving on a highway getting off an exit, and I had my kids in my car and all of a sudden as I am slowing down to come to a stop to turn off the exit my car steering and brakes locked up and everything shut down. Luckily I live in walking distance to the exit ramp because someone stopped and helped me push my car to my house. They had to put it in neutral but it was extremely hard to move the steering wheel. Never had any issues with leaks or anything like this. The car smelled like antifreeze and was running hot. I let it cool off. It was the water pump that was leaking and went out. It was not able to be driven. I researched this problem with this make and model and there is a lawsuit about this exact issue. There are all kinds of complaints and there definitely should be a recall.

- Chattanooga, TN, USA

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