Audi has announced plans of bringing to Wörthersee 2013 an ultra-lightweight concept of the current-generation TT.

Audi has announced plans of bringing to Wörthersee 2013 an ultra-lightweight concept of the current-generation TT.

Based on the TT S quattro, the concept is powered by a 2.0-liter, 4-cylinder TFSI turbocharged mill rated at 310 HP (228 kW) and 400 Nm (295 lb-ft). Audi's main objective was to lower the curb weight of the car as much as possible and they ended up shaving no less than 300 kg (661.39 lbs) which means the coupe tips the scales at just 1,111 kg (2,449 lbs). It has a power-to-weight ratio of 3.6 kg/hp and needs 4.2 seconds (1.3s quicker) until it hits 62 mph (100 km/h), en route to a top speed of 173.98 mph (280 km/h).

Compared to the standard model, the body structure is 43 kg (94.8 lbs) lighter, while together with the optimized detachable body parts results in a 100 kg (220.4 lbs) diet. The concept makes use of carbon fiber reinforced polymer (CFRP) for the rear end, B-pillars, roof and center tunnel. Magnesium was used for the floor and as hinge reinforcement.

Other modifications over the stock model include larger spoilers, while the rear wing's base is made as a supporting component from milled aluminum. Audi says the functional wing is manufactured from visible carbon. Inside it has received R8 GT-sourced bucket seats which have reduced weight by 22 kg (48.5 lbs) thanks to their fiberglass-reinforced plastic (FRP) chassis.

Although focus was on a lightweight concept, Audi still kept amenities such as electric windows, air conditioning and the electromechanical parking brake. Instead of the usual exterior mirrors, the TT ultra quattro concept benefits from compact cameras. Other weight-saving measures include front ceramic disc brakes with fixed aluminum caliper, titanium exhaust and 20 kg (44 lbs) lighter alloys.

Full details can be found in the attached press release.

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