Fail To Accelerate problems of the 2007 Audi A4

The contact owns a 2007 Audi A4. The contact stated that while driving at 40 mph, the vehicle jerked and the rpm gauge fluctuated rapidly. The contact mentioned that the vehicle failed to accelerate when the accelerator pedal was depressed. The contact stated that the failure occurred constantly. The vehicle was taken to the dealer on multiple occasions but the failure was not determined. The manufacturer was made aware of the failure. The failure mileage was 93,000.