Why does a car sound like a sports car when it accelerates?

When the car refuels, such as the sound of "sports car", there are the following possibilities:

1. Exhaust part: the sound caused by the air leakage of the exhaust joint pad or the perforation of the exhaust pipe. The exhaust manifold gasket leaks air.

2. Intake part: The intake manifold or throttle body is partially leaked or poorly sealed. (Euro II is treated differently from Euro III and above)

3. Engine chassis part: abnormal noise of accessories inside the engine or around the cabin, or abnormal noise of chassis part caused by loose accessories or vibration interference.

4. Internal causes of transmission: such as the possibility of abnormal noise caused by lack of oil or abnormal wear during driving.

5. Differential part: Abnormal sound may be caused by internal wear, lack of oil or incorrect oil (grade, temperature, etc.). ) driving.

6, does not rule out the possibility of abnormal sound in other parts. The final result is subject to the test results of the real vehicle.