general problems of the 2012 Mazda CX9

Eight problems related to engine and engine cooling have been reported for the 2012 Mazda CX9. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2012 Mazda CX9 based on all problems reported for the 2012 CX9.

1 Engine And Engine Cooling problem

Failure Date: 10/27/2022

After hearing low rumbling sound and smelling burnt oil, car was taken to dealer for check up. They informed me of known issue, front ptu leaking oil due to design flaw that put the ptu so close to the exhaust. I am seeing that other owners of this model are also reporting fires due this same exact problem, apparently unbeknownst to me Mazda has provided extended warranty up to 90k miles but not actually informed the owners of this as a potential catastrophic problem. My personal review has informed me that fire seem to be most common between 110,000 and 130,000 mile ranges.

2 Engine And Engine Cooling problem

Failure Date: 01/04/2022

Car idels up at stop signs.

3 Engine And Engine Cooling problem

Failure Date: 08/30/2019

Driving on rte 3 n in braintree. Car was decelerating while I had my foot on gas. Lost steering and barely made it to brake down lane. This car has 72k miles on it. Needs new engine.

4 Engine And Engine Cooling problem

Failure Date: 06/04/2019

Tl the contact owns a 2012 Mazda cx-9. While attempting to accelerate from a traffic light, the accelerator pedal was depressed; however, the vehicle failed to respond. The contact stated that there were no warning indicators before or after the failure. The brake pedal also became extremely difficult to depress. The vehicle was towed to continental Mazda (located at 2363 aurora Ave, naperville, IL 60540, (630) 352-5900) where it was diagnosed that coolant entered the engine oil and caused the engine to fail. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was notified and provided case number: 1-2189354066. The approximate failure mileage was 52,000.

5 Engine And Engine Cooling problem

Failure Date: 03/01/2016

The contact owns a 2012 Mazda cx-9. While driving 20 mph, there was a loud metal to metal noise coming from the rear of the vehicle. In addition, the gears failed to shift correctly and the oil and engine indicators illuminated. The dealer diagnosed that the brakes needed to be changed. The brakes were replaced, but the failure recurred and worsened. The contact also smelled fuel coming from the vehicle and the vehicle had trouble accelerating. The manufacturer was notified. The failure mileage was 33,000.

6 Engine And Engine Cooling problem

Failure Date: 05/02/2015

The transfer case is leaking and going to go completely out on my 2012 Mazda cx-9, I noticed the same gear shifting problem in my 2004 Mazda 6 wagon. The car feels like driving a stick, it jolts when shifting to drive and while moving it feels like it is shifting early. This is a known problem with Mazda but a recall is yet to surface for this issue.

7 Engine And Engine Cooling problem

Failure Date: 05/30/2014

The contact owns a 2012 Mazda cx-9. The contact stated that while traveling 15 mph, the vehicle exhibited difficulty in decelerating. The contact had to pump the break pedal extremely hard in order to slow the vehicle. There was a hissing noise that sounded throughout the vehicle. The vehicle did not decelerate until approaching an incline. The contact was able to stop at a local mechanic shop where the mechanic diagnosed the that the brake vacuum booster needed to be replaced. The vehicle was repaired. The failure mileage was 55,000.

8 Engine And Engine Cooling problem

Failure Date: 01/21/2013

I had an incident yesterday resulting in a minor collision. My accelerator stuck, my engine kept reving, and I could not stop. I kept applying the breaks but it felt as if everything locked up. I rearended the person in front of me no damage to their car and only minor to mine. I am now affraid to drive the vehicle. My husband contacted the dealership and they are waiting to hear back from Mazda corporate.


Other Engine And Engine Cooling related problems of the 2012 Mazda CX9



CX9 Service Bulletins
CX9 Safety Recalls
CX9 Defect Investigations