What is the difference between a 4 cylinder and a 6 cylinder engine?

I've noticed that some Audi A3 models have a 4 cylinder engine while others have a 6 cylinder engine. What is the main difference between these two types of engines and how does it affect the performance of the car?

A 4 cylinder engine has 4 pistons while a 6 cylinder engine has 6 pistons. This means that a 6 cylinder engine can generate more power and torque, making it better for high-performance driving or towing heavy loads.

In general, cars with 4 cylinder engines are more fuel efficient than those with 6 cylinder engines. The 4 cylinder engine has less weight and moving parts, resulting in better fuel economy.