How does the efficiency of the Audi A1's turbocharged engine improve its performance?

I've heard that the Audi A1 has a turbocharged engine, but I'm not sure how it affects the car's overall performance. Can someone explain the mechanics behind this and how it translates to a better driving experience?

The turbocharged engine in the Audi A1 uses exhaust gases to spin a turbine which compresses air and forces more of it into the engine. This results in a significant increase in horsepower and torque, giving the car a quicker acceleration and better overall performance.

Aside from increased power, the turbocharged engine also improves the car's fuel efficiency. This is because the forced air into the engine allows for better combustion, resulting in less fuel being used to produce the same amount of power compared to a non-turbocharged engine.