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.
We have a 2011 MAZDA CX-9. This is the second time the a/c condensation tank has gotten clogged with debris. Clearly the condensation tank valve is too small or there needs to be a better filter somewhere so that debris can't get in the system. There are several complaints about this problem in varying years of the Mazda CX-9 on the internet. The first time this happened we drove with the water sloshing around not knowing what was wrong. The a/c blower motor was ruined by the excess water. The next time it happened, we brought it in to get it drained immediately, the first time we heard it slosh on a turn and the blower motor was already going bad. I will never ever buy another Mazda!!! EVER!!! Mazda corporate was not helpful and neither was our dealership. Clearly they don't care and this is just a revenue stream for them.
A D V E R T I S E M E N T S
We have a 2011 MAZDA CX-9. This is the second time the a/c condensation tank has gotten clogged with debris. Clearly the condensation tank valve is too small or there needs to be a better filter somewhere so that debris can't get in the system. There are several complaints about this problem in varying years of the Mazda CX-9 on the internet. The first time this happened we drove with the water sloshing around not knowing what was wrong. The a/c blower motor was ruined by the excess water. The next time it happened, we brought it in to get it drained immediately, the first time we heard it slosh on a turn and the blower motor was already going bad. I will never ever buy another Mazda!!! EVER!!! Mazda corporate was not helpful and neither was our dealership. Clearly they don't care and this is just a revenue stream for them.
- Cathy D., Raleigh, US