What is the meaning of the Audi A1's engine displacement number?

I noticed that the Audi A1 has a 30 or a 35 or a 40 at the end of its model name. What does this number mean? Does it correspond to horsepower or torque?

The number at the end of the Audi A1's model name actually refers to its engine displacement, which is the volume of air and fuel that can be pushed through the engine's cylinders. In simpler terms, a higher number generally means a larger and more powerful engine.

The number in the Audi A1's model name corresponds to the car's engine size in liters. So an A1 30 would have a 1.0 liter engine, while an A1 40 would have a 2.0 liter engine. This can give you an idea of the car's performance and fuel efficiency.