Car Shakes When Accelerating but Not When Coasting: 9 Reasons Why Your Car Shakes When Accelerating: Causes, Solutions, and Prevention Tips Car Shakes When Accelerating but Not When Coasting: 9 Reasons While lots of things from brakes to tires to steering can cause a car to vibrate, sometimes vibrations can actually come from the engine compartment. This happens when the engine isn't getting Tire or wheel vibration is one of the most common complaints a mechanic receives. It can range from a minor annoyance to a serious safety hazard. The image outlines the primary culprits, Here's Why You Feel a Vibration When Accelerating (Gas Pedal) In The Garage with CarParts.com