Approximately two or three times a week when downshifting out of a right or left hand curve or turn, my 2012 manual transmission Mazda 3 hatchback will accelerate on its own. This is characterized by a varying increase of rpms: 2100 rpms to 4500 rpms, depending on the incident, and a sudden lurching or surging forward of the vehicle itself. When approaching curves or turns, at 30 or 40 mph, that do not have to be taken at a complete stop, I engage the clutch, apply the brakes, and slow the vehicle to 15-20 mph. Upon coming out of the turn I shift the vehicle into second gear. When I slowly release the clutch, without depressing the gas pedal at all, the car's engine will rev, rpms will surge to as high as 4000 - 4500, and the car will lurch forward until the clutch is once again depressed. These incidents are random and are not dependent on speed, weather conditions, or location. These incidents have only been duplicated with a minimal increase of rpms and no lurching forward when a mechanic is present. These incidents can not be duplicated for the dealership at their fullest and most dangerous.

- Winter Garden, FL, USA