A true sports car is always a light car, and the TT RS shines in this discipline as well. The Coupé weighs only 1,450 kilograms (3,197 lb); the Roadster 1,510 kilograms (3,329 lb). The power-to-weight ratio of 4.3 and 4.4 kilograms (9.5 and 9.7 lb) per hp speaks volumes about the dynamic potential.
The decisive factor is the construction of the two bodies. Up front they are made of lightweight aluminum components assembled using Audi Space Frame ASF technology. Extruded sections, die-castings and aluminum sheets form an impact-resistant structure of exceptional strength. The joint between the roof and the sidewalls of the Coupé are laser-welded as an invisible joint – a visual expression of the precision demanded by Audi. Steel is used at the rear of the floor pan, the doors and the trunk lid. This hybrid construction results in excellently balanced weight distribution.
The body-in-white of the Coupé weighs only 206 kilograms (454 lb), comprising 140 kilograms (309 lb) of aluminum (68 percent) and 66 kilograms (146 lb) of steel (32 percent); an all-steel structure would have weighed almost half as much again. The superstructure of the TT RS Roadster adds only 45 kilograms (99 lb). Components such as the steel bulkhead partition between the passenger cell and severely ribbed side sills provide added rigidity. The windshield frame and the two rollover bars protect the passengers if the car should roll over.
The Roadster and the Coupé are equipped with front airbags that discharge in two stages depending on the severity of the accident. Belt tensioners and force limiters protect the driver and passenger. In the event of a rear-end collision, headrests support the back of the head; head-thorax side airbags stand at the ready in case of a side-impact collision.
The equipment, specifications and prices stated herein refer to the model line offered for sale in Germany. Subject to change without notice; errors and omissions excepted.