What are the key differences between the Audi A1 models?

I am interested in purchasing an Audi A1 but I'm not sure which model is best for me. Can someone explain the different features and specifications of the various A1 models?

The main difference between the Audi A1 models is the engine size and power output. The base model has a 1.0L 3-cylinder engine, the mid-level model has a 1.4L 4-cylinder engine, and the top of the line model has a 2.0L 4-cylinder engine. The more powerful models also come with additional features such as sport suspension and upgraded brakes that may be important to consider depending on your driving preferences and needs.