I've got a 2012 Audi A3 TDI with 104,xxx miles on it, automatic. I've noticed recently it will out of the blue in low rpm without being on the throttle give a small jerk/buck kind of deal. Is this normal? I've owned the car for almost 6 months now and I know when i first got it I noticed it but then i thought it disappeared. Wife was driving it and mentioned it to me so now i notice it again. I haven't done a lot of research on it, It was kind of an impulse buy but i couldn't be happier with the car.