Besting 13 competitors from around the world to take the award, the coupe was singled out for its groundbreaking Audi Space Frame (ASF) technology. ASF was first introduced in the early '90s on the Audi A8. But the TT represents the first use of ASF on a hybrid aluminum and steel structure.
The EuroCarBody Award recognizes the ASF technology and the people who managed to perfect it. The award shouldn't really come as much of a surprise as the TT is just another advancement on the A8 ASF that won the award in 2003. The read link will take you to Fourtitude and give you all of the technical data on how this composition works, but suffice it to say that it is very sophisticated and especially impressive when you see the beautifully athletic shape that sits atop the engineering innovations.
The Audi beat out the second place Citroën Xsara PICASSO and the new Jaguar XK, which finished third. Last year the Mercedes S-Class claimed the prize.