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.

Collapse Safety Ratings

NCAP 5-Star Crash Test & Rollover Safety Ratings

Driver FrontPassenger FrontDriver SidePassenger SideRollover
2012 CX-9 SUVnot testednot testednot testednot tested****
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IIHS Crash Test & Rollover Safety Ratings

Good Acceptable Marginal Poor

2012 Mazda CX-9 4-door SUV

Moderate Overlap FrontSmall Overlap DriverSmall Overlap PassengerSideRear1Rollover2
G Overall
G Structure
A Head/Neck Injury
G Chest Injury
G Left Leg Injury
A Right Leg Injury
G Restraints
Full IIHS Moderate Overlap Crash Test report »
P Overall
P Structure
A Head/Neck Injury
G Chest Injury
G Hip/Thigh Injury
A Lower Leg Injury
P Restraints
Full IIHS Small Overlap Driver-side Crash Test report »
Not tested. G Overall
A Structure
Driver
G Head Protection
G Head/Neck Injury
G Torso Injury
G Pelvis/Legs Injury
Rear Passenger
G Head Protection
G Head/Neck Injury
G Torso Injury
G Pelvis/Legs Injury
Full IIHS Side Impact Crash Test report »
M Overall
G Geometry
M Dynamic
Full IIHS Rear Impact Crash Test report »
M Overall
Full IIHS Rollover Safety report »

1 — Power leather seat (AHR).

2 — Applies only to models built after June 2010.

Ratings only apply to the model and body or seat type tested. The date of manufacture and optional safety equipment can affect results. For full details see www.iihs.org.

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