Why does an Audi car have engine RPM but won't move when stepping on the accelerator?

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Audi car having engine RPM but not moving when stepping on the accelerator is caused by insufficient oil pressure or poor fuel pump performance. Removing throttle valve sludge: Sludge forms due to carbon deposits from fuel combustion exhaust accumulating on the throttle valve, combined with impurities not filtered by the air cleaner. Excessive sludge can cause air blockage, leading to fuel pump malfunctions; Cleaning injector carbon deposits: Since the combustion chamber is prone to carbon buildup, which can cause starting difficulties, injector carbon deposits may also lead to fuel passage blockage, distorted fuel injection, and poor atomization, resulting in reduced oil pressure. When there's RPM but no speed increase after stepping on the accelerator, the causes need to be checked one by one. You may choose to have it inspected at a specialized repair station.