The engine began revving high as I took my foot off the accelerator and apply the brakes as I approached a traffic red light. I put the car in neutral to see if by tapping the gas pedal it would stop revving. It did not. With my foot on the brake pedal to the floor, I put the car in drive and the car sped forward despite my foot on the brake pedal. I went through a red light trying to make a left turn on to a major highway, crossed a median strip, clipped a vehicle in the rear, turned the car trying to avoid collisions with other cars, went off the road hitting utility pole and transformer box on the opposite side of the highway, finally coming to rest with air bags deployed on the driver side. This happened on July 8, 2018, a Sunday afternoon. No one was hurt, but obviously shaken and confused how my brakes could fail on a car recently in for its 10000 mile scheduled maintenance 9 days prior. Researching this on line found similar incidents of this occurring with Mazda 3 vehicles and other manufacturers (I.e. Toyota). Referred to as sudden unintended acceleration (sua). There are many reported cases of sua, some where drivers are at fault. My case was clearly mechanical defect related.

- West Chester, PA, USA

When from a full stop, then with when needing to accelerate quickly, there is a delay in engine response. Usually half a second to one full second delay in engine response before it starts to accelerate. One one occasion, it did not accelerate at all. I had to then let my foot off of the gas pedal and press down on the gas again for it to finally accelerate. This was very dangerous for example when I was on the freeway. My lane was stop-and-go traffic, but the lane to my right was open, so I waited till it was clear then turn the steering wheel to the right and press the gas pedal. Well to my surprise it did not accelerate and consistently moved around 5 mph, well there was a car coming in that lane and my car would not accelerate so I let off my foot and press the gas again and it started to accelerate.

- Torrance, CA, USA