The Audi TT RS – the purist driving machine

Five-cylinder engines are in Audi’s DNA. The company is once again building such an engine – this time a high-performance engine.

The Audi TT RS, developed by quattro GmbH, sports a turbocharged 2.5-liter engine with FSI direct gasoline injection under the hood that produces 250 kW (340 hp) and 450 Nm (332 lb-ft) of torque, yet consumes only 9.2 liters/100 km (25.57 US mpg). In conjunction with quattro permanent all-wheel drive, the powerful five-cylinder model offers explosive performance, making the compact Audi TT RS – whether the Coupé or the Roadster – a purist driving machine.

Potent five-cylinder gasoline engines enjoy a long tradition at Audi, powering cars like the “Ur-quattro” (original quattro) to the head of the pack. Audi has resumed using this recipe. The newly developed engine combines a turbocharger with FSI direct gasoline injection to make the TT RS an uncompromising sports car.

The TFSI delivers 250 kW (340 hp) from a displacement of 2,480 cc: an output of 137.1 hp per liter. Weighing only 1,450 kilograms (3,197 lb), the Coupé boasts a power-to-weight ratio of only 4.3 kilograms (9.5 lb) per hp. For the Roadster (1,510 kilograms (3,329 lb)) this figure is 4.4 kilograms (9.7 lb) – the low values are made possible by the extremely lightweight bodies utilizing the Audi Space Frame (ASF).

They are made of aluminum up front and steel sheet at the rear.

The powerful five-cylinder unit is very compact and particularly lightweight. Its large turbocharger generates up to 1.2 bar of relative boost pressure. At full load, the intercooler reduces the temperature of the compressed air and achieves an efficiency of more than 80 percent. When the driver pushes the standard Sport button on the center tunnel, a flap installed in the left exhaust tailpipe renders the exhaust noise even more intense while making engine response more direct.

Purist character: drivetrain and suspension A manual six-speed transmission characterized by high efficiency and tightly spaced gears of a sporty nature distributes the tremendous power of the five-cylinder engine to the quattro permanent all-wheel drive system, which gives the TT RS enormous traction, superb dynamics and supreme stability.

The innovative mix of materials in the body provides of an exquisitely balanced axle load distribution and outstanding rigidity. This rigidity is the basis for the car’s precise handling. The standard sports suspension lowers the body by 10 millimeters. Available as an option is the Audi magnetic ride adaptive damping system, which offers two basic characteristics: Comfort and Sport.

The Audi TT RS rolls on 18-inch tires shod with 245/40 tires. The internally ventilated brake disks measure 370 millimeters in diameter up front and 310 millimeters at the rear. The front friction rings are perforated.

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