Wide add-on parts, a powerful rear wing and a power output of 441 kW (600 hp) – the Audi TT clubsport turbo impresses with its power and its spectacular design. The technical concept car, which debuted at the Wörthersee Tour 2015, combines a powerful TFSI engine with an electric biturbo for the first time. This means that it leaves its competitors in the dust after only a few meters.
The Audi TT clubsport turbo was inspired by the successful Audi 90 IMSA GTO race car of the late 1980s and is powered by an enhanced-output 2.5 TFSI engine. From 2,480 cc of displacement, the five-cylinder engine produces 441 kW (600 hp) of power and 650 Nm (479.4 lb‑ft) of torque, with more than 600 Nm (442.5 lb‑ft) available from 3,000 to 7,000 rpm. This means that the sonorous TFSI produces 176 kW (240 hp) and 260 Nm (191.8 lb‑ft) per liter of displacement. Its exhaust system is designed for minimal back-pressure; a side pipe to the ambient air is located immediately after the racing-type muffler.
The Audi TT clubsport turbo show car has an unladen weight of just 1,396 kg (3,077.7 lb). It needs just 3.6 seconds for the standard sprint from 0 to 100 km/h (62.1 mph), and its top speed is 310 km/h (192.6 mph). The TT clubsport turbo flaunts its strength over the first few meters of a sprint. Its electrically driven compressor lets it cover up to six meters (19.7 ft) more within the first 2.5 seconds than a comparable car without this new technology.
In the lower engine speed range, the electrically driven compressor increases torque by up to 130 Nm (95.9 lb‑ft). It revs up to maximum rpm rapidly and without any perceptible delay, and it continues to boost charge pressure when too little drive energy is left in the exhaust gas for the conventional turbocharger. This allows the conventional turbocharger to be designed more for high charge pressures and thus high engine output. The 2.5 TFSI develops its immense power with no perceptible lag, so it is available at a tap of the accelerator in any situation.
Energy storage: the 48‑volt electrical system
A dedicated 48‑volt electrical sub-system – another key future technology from Audi – supplies electrical energy to the electrically driven compressor. A compact lithium-ion battery in the luggage compartment stores the energy generated by recuperation when coasting. A DC/DC converter provides the connection to the 12‑volt electrical system. Power transmission is via a manual six‑speed gearbox and quattro permanent all-wheel drive, whose multiplate clutch is mounted on the rear axle for better weight distribution. A coilover suspension system enables highly precise adjustment of the body’s ride height and the compression and rebound of the shock absorbers as needed. An electric lifting function protects the equipment from damage by street curbs. Electronic Stabilization Control (ESC) and wheel-selective torque control round out the dynamic qualities of the suspension.
The wheels are size 9.5 J x 20. Their six twin-spoke design is finished in a two‑color look – both in gloss turned finish and matt black – and the tires are size 275/30. Carbon-fiber ceramic brake disks are mounted behind all four wheels; they are very lightweight and wear-resistant. The front brake disks measure 370 mm (14.6 in) in diameter.
Widened by 14 centimeters (5.5 in) Characteristic add-on parts
The compact sports car takes a full stance on the road with track widths of 1,736 mm (5.70 ft) in front and 1,729 mm (5.67 ft) at the rear. 4.33 meters (14.2 ft) in length, it is 1.97 meters (6.5 ft) wide, including the exterior mirrors. Its angular fenders contribute their own, built-up shape to the car body. They take the characteristic design motif of the Audi TT to an extreme and accentuate the quattro drive. The fenders are open at the front and rear. Air from the car’s slipstream flows through them to cool the brakes. The Singleframe grille and the large air inlets are also optimized for maximum air flow.
The manually adjustable rear wing is an updated version of that from the Audi Sport TT Cup race car. The wing is now 20 cm (7.9 in) wider, and the side flaps, which feature the four rings, were given a new geometry.
The wing consists of carbon-fiber-reinforced polymer (CFRP) as do all other add-on parts: the air inlets and the large splitter at the front, the side panels and side sill trims as well as the voluminous diffuser at the rear. An assembly of ultra-high-strength titanium tubes makes the rear zone of the interior even more rigid and safe. Driver and passenger sit on lightweight racing bucket seats with four-point belts. The display and operating concept with the digital Audi virtual cockpit focuses on the driver, who can control all key driving parameters by using the four satellite buttons on the multifunction steering wheel.
The equipment and data specified in this document refer to the model range offered in Germany. Subject to change without notice; errors and omissions excepted.