That's because you ease off and unknowingly start the motion. Remember, at higher rpm's the car can get pretty twitchy. A slight increase in throttle after easing off will easily do this. Make sure the Throttle itself is not defective. Check with the engine off if the pedal goes down smoothly without feeling 'steps' Best done without shoes.
Originally Posted by BayAreaBMWFan
OK. Thanks for the observation. That explains the series of jerks.
However, the driver input happens only after the initial jerk. What causes the initial jerk?
In my experience, it is caused typically, when you are easing off the throttle after a hard start.
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