Question Rough acceleration: Answers Can damage a vehicle. Is common if a vehicle is warmed up. Is encouraged to improve gas mileage. Explanation When accelerating, speed up smoothly and gradually so the vehicle does not jerk. Rough acceleration can cause mechanical damage. This questions appears in the following tests: Alaska Tank Alaska Passenger Arkansas Class A Knowledge Test Idaho Class A Knowledge Test Mississippi Class B Knowledge Test Mississippi Double New Hampshire Class B Knowledge Test Tennessee Class B Knowledge Test Utah Class B Knowledge Test Vermont Double Virginia Class A Knowledge Test