Towards the end of last month we shared a few technical details regarding the interesting Audi RS5 TDI concept and now the German company has released more extensive information along with several other images. Its beating heart is a V6 3.0 TDI bi-turbodiesel engine that generates 385 PS (283 kW) and a maximum torque of no less than 750 Nm (553 lb-ft) from 1,250 rpm to 2,000 rpm.
It’s backed by an electric turbocharger which offers most of the power right away, thanks to an electric motor that has replaced the turbine wheel and is capable of accelerating the compressor wheel to more than 70,000 rpm in just a few hundredths of a second. The concept’s exhaust turbochargers generate 2.4 bar of relative boost pressure while the engine has a redline set at 5,500 rpm.
With this concept, Audi is attempting to highlight the advantages brought by 48-volt electrical systems that are currently in the works for future production models. Getting back to the RS5 TDI, it sprints to 62 mph (100 km/h) in only 4 seconds and will hit 124 mph (200 km/h) from a standstill in less than 16 seconds before topping out at 174 mph (280 km/h).
Despite being seriously fast, the Audi RS5 TDI concept has a fuel consumption of less than 5.3 liters / 100 km (44.4 mpg US) with corresponding CO2 emissions of less than 140 g/km. A 48-volt electrical system is used to obtain energy for the electric turbocharger through recuperation. The 48-volt electrical system is connected to a regular 12-volt electrical system via a DC/DC converter and the energy is being stored in a compact lithium-ion battery.