Audi released the official details and specs of its latest concept, the RS5 TDI. As we previously told you, the RS5 TDI Concept is powered by a 3.0-liter V6 biturbo diesel engine that generates 385 hp (283 kW) and 750 Nm (5523 lb-ft) of torque from 1,250 to 2,000 rpm.
What’s more interesting is that the engine also features an electric turbocharger that provides staggering power when starting off. An electric motor was used to replace the turbine wheel and accelerate the compressor wheel to over 70,000 rpm in just a few hundredths of a second.
In addition, the exhaust turbochargers also provide as much as 2.4 bar of relative boost pressure. The engine pushes the RS5 TDI Concept from 0 to 100 km/h (62 mph) in 4.0 seconds, to 200 km/h (124 mph) in less than 16 seconds, while top speed is limited at 280 km/h (174 mph).
Despite these impressive performances, fuel consumption is just 5.3 l/100 km (44.4 US mpg), while CO2 emissions are less than 140 g/km. According to Audi, recuperation is the primary source of the drive energy for the electric turbocharger.
In order to transmit this energy, the RS5 TDI Concept uses a separate 48-volt electrical system that is connected to the conventional 12-volt electrical system via a DC/DC converter. As expected, the energy is stored in a compact lithium-ion battery.