Specs for all generations of Audi TT

Curb weight of Audi TT is between 1240 kg (2733.73 lbs.) and 1590 kg (3505.35 lbs.), depending on the modification, an average for this class.

Despite the the model name - “TT”, seeming like it could stand for Twin-Turbo, the Audi TT is not twin-turbocharged.

Most Audi TT variants’ top speed is limited to 250 km/h. In terms of acceleration, however, the Audi TT RS Coupe (8S, facelift 2019) 2.5 TFSI (400 Hp) quattro S tronic achieves the best time, going from 0 to 100 km/h in 3.7 seconds.

Yes, Audi TT is classified as a sports car. It is designed emphasizing on dynamic performance, rather than anything else.

Yes, if being well taken care of. Owners describe Audi TT as being fun to drive, well-performing, especially Qattro variants, and good on fuel economy, compared to other vehicles in the same class.
It is, on the other hand, quite expensive to maintain. It’s known to have issues with electronics, the timing belt wearing out prematurely, as well as, water pump and transmission issues. And even a seemingly small problem, such as failure of the motors in the retractable rear windows, is expensive to fix.