Question for Audi A4 engines?

It was made by Germans and you haven't "tricked" it out. Therefore, it is a good engine, and a good car. Once people start modifying there cars, and adding non-oem parts is when they become unreliable. If you are staying stock, yes you made a good choice. If you wanted to modify this car then no, there's no room with that beautiful German monster under the hood.