Awesome fast and yellow hot hatch from Poland. American customers are not ready to buy a lot of such hatchbacks. But in Europe with a lot of thin historical streets are at home. They are practice enough and can be really fast, like this A45s AMG. By the way it's a last Generation of A-Class - W177.
It's really easy to tune modern cars. Turbo can give else more power for cheap. And in exterior all you need are wheels and maybe some tuning kit by your taste.