Any unusual shaking or vibrating forces coming from the engine is cause for concern. It could be something as simple as old spark plugs producing an uneven power delivery, it could be something serious like worn or broken engine mounts, or it could be even more serious in the case of internal engine damage.

What does it mean when your car shakes?

The most prevalent cause of vibration is problems with your wheels or tires. The potential problems include improper wheel and tire balance, uneven tire wear, separated tire tread, out of round tires, damaged wheels and even loose lug nuts. ... The most prevalent cause of vibration is problems with your wheels or tires.

Should I be worried if my car is shaking?

Regardless of what is causing your car to shake, it's important not to ignore it and have it looked at as quickly as possible. While it might be a minor issue, leaving it unchecked can lead to bigger problems and costly repairs down the road.