We are growing more and more fond of good diesel engines. Now Audi announced a new 3.0 liter V6 diesel which at last on paper seems to be really good.

This 313PS 3.0 Liter BiTDI V6 unit , which will first launch in the A6 saloon and Avant and A7 in the UK, features a two-stage turbocharger group that delivers a maximum boost pressure of up to 3.2 bar, resulting in an enormous torque of 650 Nm.

Performance-wise, it is more than satisfying. The A6 3.0 BiTDI quattro does 0 to 62mph in 5.1 seconds, and the A6 Avant and A7 Sportback do the same in just 5.3 seconds. An electronically limited top speed of 155mph is common to all versions. These are very respectable figures.

They are especially respectable when you realize that engine averages 44.1 mpg. It is fitted with Audi modular efficiency platform, including start-stop and recuperation systems and the innovative thermal management.

Audi has also fitted it with a sound actuator which imposes a defined oscillation pattern on the exhaust flow and transforms the typical TDI exhaust note into a more sonorous roar that is closer to the output of a high-performance petrol engine. That eliminates one big drawback of diesel-powered cars.

The new BiTDI engine is available in conjunction with SE and S line specification in the A6 Saloon, A6 Avant and A7 Sportback. The forthcoming A6 allroad quattro, due to open for order in February, will also offer this exceptional unit. Stand-out features common to all these models include satellite navigation linked to a 6.5-inch retractable colour monitor, Milano leather upholstery, the Audi drive select adaptive dynamics system controlling throttle response, transmission shift points and steering feel, the Audi parking system plus, light and rain sensors, cruise control and keyless go push-button engine ignition.

AUDI A6, A6 AVANT AND A7 SPORTBACK – UK OTR PRICING