What happens if you drive with bad motor mounts?
A failing motor mount can lead to serious engine damage and will also greatly impact the performance of the vehicle. It is very unsafe to drive with a broken motor mount. If you feel a lot of vibration in the vehicle while you are driving, there's a good chance it's the motor mount.
Can bad engine mounts affect acceleration?
Engine movement or misalignment may occur as a result of engine mount failure. Broken or worn engine mounts may cause the engine to slide around in all directions in the engine bay, something that is particularly noticeable when accelerating or driving at high speeds.
Is it expensive to replace motor mounts?
For the price of parts, actual motor mounts themselves cost around $50 to $150. The labor to install these mounts and correctly realign your engine costs more than the parts themselves. Expect to spend anywhere from $200 to $450 in labor to replace a motor mount depending on how difficult it is to get to.