What is the difference between the Audi 80 and Audi 90 models?

I am considering purchasing either an Audi 80 or Audi 90, but I am not sure which one would be a better fit for my needs. Can someone explain the main differences between these two models?

The Audi 80 and 90 are both great choices, but they do have some key differences. The Audi 80 has a smaller engine and is better for everyday driving, while the Audi 90 has a more powerful engine and is better for performance enthusiasts.