2012 Mazda CX-9 problems

“I was driving normally when I started sowing down and noticed the brakes were harder to push. I finally stopped just before almost rear-ending a vehicle in front of me. It turns out the brake booster, a known problem that was not communicated to me a few years ago, failed and makes braking the vehicle harder, increases distance, and makes the vehicle unsafe to drive. The problem has been reproduced via a diagnostic test at Mazda of Gladstone dealership on 9/27/23. The dealership has been the only people who have inspected the issue. There were no warning signs, no warning lights, nothing. It was scary because I didn't think my vehicle was going to stop. It's completely dangerous. I have not gotten the vehicle repaired yet because I believe Mazda holds responsibility as this has been a known issue with their cars.”

“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.”

“My driver and passenger side curtain airbags randomly deployed without a collision. Thankfully I was at a stop sign when this happened. If it happened while I was driving, I’m sure I would have wrecked and could possibly be dead. It was loud! I thought I’d been shot or that I’d driven over a bomb. We did take the car to someone that’s certified in airbags and it was stated that this was due to a manufacturer’s defect. I also have lots of pictures. There was no warning when the airbags deployed. Mazda is refusing any responsibility due to the car being outside of the warranty.”

“The water pump suddenly started leaking and the mechanics I talk to said this is a very common problem with this vehicle and type of engine. Sounds like owners are left to foot the bill for this costly and difficult repair of a defective product. Hopefully more owners come forward and report their experience in this regard”

“While drive i feel like there is sticking something below the car when i am accelerating. And the acceleration became hard. Also i heard a weird noise at that time. Then a saw a leakage below my car.”

“The contact owns a 2012 Mazda CX9. The contact stated that the vehicle had previously been involved in a crash due to a fractured passenger's side lower control arm. The dealer was made aware of the failure and confirmed that the vehicle had been repaired under NHTSA Campaign Number: 15V451000 (Suspension). The dealer referred the contact to the manufacturer for assistance. An independent mechanic replaced the passenger's side lower control arm; however, the contact stated that after the repair was performed, the engine rattled and the vehicle stalled. The vehicle was then taken back to the independent mechanic, who determined that the driver's side lower control arm spacers were missing and that the front and rear axles, brakes, and rear shocks needed to be replaced. Additionally, the cage bolts needed to be retightened. The vehicle was not repaired. The manufacturer was made aware of the failure, and a case was opened. The failure mileage was approximately 110,000.”