Is there any major difference between the Audi 80 and Audi 90 models?

I heard that these two models are quite similar. However, I am considering purchasing a used Audi and I want to make sure I pick the right one. Can anyone explain the key differences between the Audi 80 and Audi 90 models?

While both Audi models share some similarities, there are important differences to consider. The Audi 80 is a compact car, while the Audi 90 is a mid-size car. This means the Audi 90 offers more space and comfort, but also tends to be more expensive. If you prefer a smaller and more affordable option, go for the Audi 80.