2012 Mazda CX-9: jerking or lurching

Filed Jul 17, 2020 · Brakes · 105,000 miles · KY

Brake pedal has become harder than usual to depress and the car does not start stopping until the brake pedal is depressed harder and further down. Also there is a hissing noise once the car stops and the brake pedal goes further to the floorboard. Once stopped and sitting the car will lurch as if it has been hit in the rear end. This all happens on any type of roadway. This has been going on for about two months and getting more pronounced.

Filed Jul 1, 2020 · Brakes · 145,000 miles · NC

Purchased from a certified pre-owned mazda dealer....I experienced, with no warning, my brakes become hard to press. It happens in reverse, coming off cruise, slow/fast speed, etc. I have to use an extraordinary amount of effort to press the brakes and bring the car to a stop. If someone pulls out in front of me, there is no guarantee I would be able to operate the brakes quickly enough to avoid an accident. I have children I transport and it is concerning for me as a mom especially. A few times the pedal will 'release' and operate normally after the extra pressure is applied which causes the car to jerk to a stop because the brakes were being pressed very hard. Most times, extra pressure is required the entire time. This is a major safety concern and an issue I am aware is common in this model. Mazda extended this warranty to 90k and 7 years back in 2015; however, this does not cover used car purchasers. The issue was not disclosed to me in my purchase date of 12/12/2016. Had I known this major component could fail, I would have made a more educated decision on whether to purchase or request the faulty system be corrected.

Filed May 19, 2016 · Brakes · 60,000 miles · SC

Brake failure at 60k miles (possibly earlier). I bought the vehicle from a dealer 2 months ago and was told front and rear pads and rotors had already been replaced. They felt inconsistent but I thought they needed to settle in. Then the power boost began to fail and a high pitched whining noise comes from the booster if the pedal is held down. It has lurched forward with my footrr on the pedal while at a full stop. I now put it in neutral when at a stop. Getting it to stop is the problem. Very ,very dangerous.

Filed Mar 1, 2016 · Brakes · 56,000 miles · NC

The vehicle presents a catastrophic failure in the brake system. The brake pedal gets extremely hard to depress and the effect is minimal. The vehicles stopping distance is significantly increased; if pressed harder the pedal will suddenly get softer and the brake power increases unexpectedly jerking the vehicle to a stop. Additionally, there is a loud hissing noise noted when the brake pedal is depressed. The hissing noise comes from the drivers side of the cabin in the vicinity of the emergency brake pedal. Mazda needs to address this issue as many people have identified concerns in this area. Of course we operate utilizing tombstone management theories; only recognizing a problem once someone is killed.

Filed Oct 8, 2015 · Airbags, Steering · 17,804 miles · OH · crash

Tl* the contact owns a 2012 mazda cx-9. While driving 30 MPH, the vehicle jerked to the left without warning and crashed into a tree. The air bags failed to deploy. There were no injuries sustained. A police report was filed. The vehicle was towed to a dealer to be repaired. The manufacturer was not made aware of the issue. The failure mileage was 17,804.

Filed Nov 21, 2014 · Transmission · 47,053 miles · NC

Like one other incident, my complaint involves the transfer case which is specific to the awd models. I was on a major roadway when I noticed a low, strange noise. About this time I was preparing to enter a turn lane when the car suddenly lurched and made an awful noise that literally sounded like the engine fell out. It then felt like I ran over said engine before the car came to an abrupt stop. Thankfully the light at the intersection had been red and traffic was slowing with me because I shudder at the thought if traffic had been moving at the regular rate of speed. Mazda roadside assistance had it towed to the dealership where the two guys immediately asked if it was an awd model. They said that without even looking at it, based on what I'd said happened, they'd bet it was the transfer case. Thankfully the tc was still under the power train warranty, but it seems like mazda is aware of this issue. Would have seriously been nice to be alerted to such a potentially dangerous defect. I would have certainly had mine replaced to avoid being put into the situation I was in.

Filed Feb 27, 2014 · Acceleration, Brakes · 4,000 miles · IN

I am unsure of the first date of occurrence, but the following have been happening since I purchased this vehicle new with 12 miles on it. And the dealer can't find anything wrong with it. 1. The AC always comes on. Even when it's below zero outside. 2. It fails to go when pushing on the accelerator frequently, and especially in reverse, from a stopped position, until you really push hard on the accelerator causing it jump. 3. Last friday 2/21/2014 as I was on a ramp moving from one interstate to another, the engine continued to rev up even after I let off the gas, and pushed the brake. This is not the first occurrence of this, it's actually happened at least 10-12 times. It was definitely the most scary, as I thought I was going over the side of the ramp or into the semi in front of me for a minute or so. 4. The brakes squeak loudly when it's cold. 5. The brakes are either really sensitive, or you have to stomp them to get them to work, so since you don't know which it's going to be you're likely to jerk yourself and your passengers around a lot. 6. The vehicle pulls to one side or the other, which would seem to indicate that an alignment is needed, however, it can't pick which side it's going to gravitate towards which leads me to believe it's something in the steering.