The Audi RS 5 TDI competition concept uses a technology similar to that in the Audi TT clubsport concept. An electrically driven compressor provides for powerful, spontaneous thrust even at low engine speeds. It works together with a 3.0 liter, biturbo V6 TDI producing 320 kW (435 hp) and 800 Nm (590.0 lb-ft) of torque.
At the Sachsenring track in summer 2015, the technology platform set a new best lap time for cars with a diesel engine. The Audi RS 5 TDI competition concept rounded the 3.6 km (2.2 mi) race course in a time of 1 minute 35.35 seconds. Danish driver Nicki Thiim shaved 1.87 seconds off the previous record for diesel cars. In spring 2015, sport auto magazine tested the technology platform on the Hockenheimring, posting the best lap time the magazine had ever recorded for a car with a diesel engine.
The RS 5 TDI competition concept is based on a technical concept car that Audi presented in summer 2014 on the 25th anniversary of the TDI engine. Following extensive further development, the sport TDI with 320 kW (435 hp) and 800 Nm (590.0 lb-ft) of torque sprints from zero to 100 km/h (62.1 mph) in 4.0 seconds and to 200 km/h (124.3 mph) in less than 16 seconds.
A key innovation is that in addition to two exhaust-gas turbochargers, an electrically driven compressor is also used. A small electric motor with seven kW of power drives a turbine to a speed of up to 72,000 revolutions per minute within 250 milliseconds for extremely fast buildup of charge pressure. Typical exhaust-gas turbochargers take two to three times as long to reach a comparable turbine speed. Thanks to its electrically driven compressor technology, high charge pressure is available quickly in the RS 5 TDI competition concept in any driving situation. This is essential for excellent sporty engine response.
The compressor is powered via a 48 volt electrical sub-system – a key component of the Audi electrification strategy. It enables the rapid transmission of larger amounts of electrical energy and is thus ideally suited for supplying power to the compressor.
The Audi RS 5 TDI competition concept is 241 kg (531.3 lb) lighter than the model upon which it is based. Targeted lightweight design measures have reduced the car’s weight: The engine hood consists of carbon-fiber-reinforced polymer (CFRP), the doors are made of aluminum and the exhaust system is largely made of titanium. Inside, it features CFRP racing bucket seats, and the rear bench seat has been eliminated as part of an interior concept that is based on lightweight design. Thin glass and polymer windows are used as well.
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.