Audi will soon add a new engine version to its A8 family: the 3.0 TDI with 150 kW (204 hp). This sophisticated and powerful new 3.0-liter TDI powers this luxury sedan while raising the efficiency bar.
The V6 diesel is a high-tech engine. It weighs far less than 200 kilograms (441 lb) and extensive measures minimize internal friction. Innovative thermal management – a feature of many Audi engines – is particularly complex in the 3.0 TDI. The crankcase and the cylinder heads have separate coolant circuits; coolant is not circulated within the block while the engine is warming up.
A common rail system with lightning-fast piezo injectors provides injection pressure up to 2,000 bar; the turbocharger and both camshafts’ control times have been optimized for maximum efficiency. A start-stop system deactivates the engine as soon as the vehicle comes to a stop, and an energy recovery system stores energy during deceleration.
The new and efficient TDI in the A8 model line generates 150 kW (204 hp). Its maximum torque becomes available just above the idling point: 400 Nm (295.02 lb-ft) remain constant between 1,250 and 3,500 rpm. The 3.0 TDI propels the A8 from 0 to 100 km/h (0 to 62.14 mph) in 7.9 seconds en route to a top speed of 235 km/h (146.02 mph).
It consumes an average of only 6.0 liters of fuel per 100 km (39.20 US mpg), equivalent to 158 grams of CO2 per km (254.28 g/mile).
This high efficiency is made possible not by the engine alone, but also the A8’s low weight – yet another chapter in the success story of Audi’s “ultra” lightweight-design strategy. This luxury sedan with its ASF body (Audi Space Frame) made of aluminum weighs a mere 1,795 kilograms (3,957 lb) with a new 3.0 TDI – by far the lowest weight in its segment.
The equipment and data specified in this document refer to the model range offered in Germany. Subject to change without notice; errors excepted.