1. Check the motor: The motor is one of the main sources of noise in electric vehicles. Check whether the motor is loose, worn, or needs lubrication, and maintain or replace it if necessary.
2. Adjust tire pressure: Insufficient or excessive tire pressure may cause noise during driving. Ensure that the tire pressure is within the manufacturer's recommended range.
3. Check the brake system: Worn brake pads or uneven brake discs may also cause noise. Regularly inspect and replace worn brake components.