Why does the Audi car shake when stepping on the accelerator?

[PatrickMarie]

The reasons for the Audi car shaking when stepping on the accelerator are as follows: carbon buildup in the car, fuel system failure. Carbon buildup in the car: Carbon buildup includes cylinder carbon buildup, throttle carbon buildup, spark plug carbon buildup, intake carbon buildup, etc. These locations are closely related to the engine's power output. When there is excessive carbon buildup inside the engine, the car's ignition energy decreases, intake efficiency drops, ultimately leading to reduced engine power and shaking with weak acceleration. Fuel system failure: Adding incompatible fuel grades causes the car's output power to decrease and power to reduce. Or, due to the blockage of the fuel tank cap vent hole, it cannot meet the required fuel supply, resulting in a lean air-fuel mixture and weak engine acceleration.