Audi a4l will suddenly shake when shifting to R gear.

Idle vibration can be seen from the weak pointer of the idle meter, and the general performance is that it is not burned well. If it is a new car, there will be no problem of idling parts, because the combustion requirements of turbo direct injection vehicles are very difficult, so it is better to clean the oil circuit first. Before, the idle pointer was not firm, and after the fuel tank joined the company's general fuel additive, it vibrated at idle speed and ran two boxes of oil.