Jacko123

Hi all, I'm in the process of purchasing an Audi A4 2.0t Quattro s-line 2010 and was looking for some advice on the following.During my many months of searching,I've noticed that some cars have 2.0t on the boot and others have tfsi(all 2.0 engines).What is the difference if any?As I can see nothing hence why I'm here!Hope someone can help clear this up! Cheers