What is the purpose of the turbocharger in a Ford Focus ST?

I recently purchased a Ford Focus ST and noticed that it is equipped with a turbocharger. What does the turbocharger do and how does it improve performance in my car?

The turbocharger is responsible for compressing air and forcing it into the engine, which allows for more fuel to be burned, resulting in increased horsepower and torque.

The turbocharger can also improve fuel efficiency in your car by allowing the smaller engine to produce the same power as a larger engine, using less fuel.

However, it is important to properly maintain and service your turbocharger to avoid any potential issues.