What causes the shaking when the vehicle is first started?

[LaEmerson]

Shaking when the vehicle is first started is a normal phenomenon, and almost all cars experience some shaking when the engine is started. During engine startup, the engine operates unevenly, resulting in some shaking, which typically stops once the engine is running. Most cars use inline four-cylinder engines, which may also exhibit slight shaking after startup. If the engine shaking becomes more pronounced, it could indicate an issue with the engine mounts. Engine mounts, made of rubber, are located where the engine connects to the frame. These mounts help prevent the vibrations from the engine from being directly transmitted to the vehicle body.