Power plus efficiencyTDI® engines in the Audi A8

One in every two Audi cars sold today is a diesel. What sounds perfectly normal now was cause for huge excitement 20 years ago, when Audi revolutionised the market with the first 2.5 litre TDITDISynonymous with muscular torque delivery and outstanding efficiency: TDI. Today, TDI engines are sporty, smooth and economical.TDI engine. Since then, developments such as common rail technology have made TDI even more efficient.

A8 3.0 TDI quattro

Piezo injectors ensure the fuel is finely and precisely distributed. Consequently, since the first TDI, the engines have become around 30% more economical, whilst specific output has increased. So it was only logical that a diesel car should then enter the world of motorsport. And successfully too. In 2006, the Audi R10 TDI won the 24 h race at Le Mans – the first diesel powered racing car to do so. It was able to repeat this victory on several occasions.

An engine with winner’s genes awaits you in the new Audi A8. For example, the 3.0 TDI power unit with 184 kW; it’s got plenty of pulling power and it goes without saying that it works with the intelligent Common Rail technology. Of course, efficiency does not exclude driving enjoyment: With the hefty 550 Nm of torque, you can accelerate your A8 from 0 to 100 km in 6.1 seconds.

Fuel consumption and emissions data:
Fuel consumption, combined, 6.6 l/100 km
CO2 emissions, combined, 174 g/km

A8 4.2 TDI quattro

Even more powerful is the 4.2 TDI: 258 kW and a maximum torque of 800 Nm will take you from 0 to 100 km/h in just 5.5 seconds. Fuel consumption, however, is just 7.6 litres per 100 km. This is also assured by the common rail technology which injects the fuel directly into the combustion chamber at pressures of up to 2,000 bar. An innovative thermal management system is at work in the 4.2 TDI engine too where it helps to reduce fuel consumption by heating up the coolant quickly. In addition, it has been possible to reduce the weight of the engine despite its greater engineering complexity.

Fuel consumption and emissions data:
Fuel consumption, combined, 7.6 l/100 km
CO2 emissions, combined, 199 g/km