I don't know about the engine, that's what the salesman told me. I thought it was a little weird that it was an old Audi I5. That TV commercial is funny. Whenever I see those harlequin models, I think of "I could make out out of junkyard parts." The Jetta TDIs seem to be selling like hotcakes here. I've been told that there is a waiting list and there's already like 100 people on it (several months wait I believe).