has launched the
biturbo V6 TDI engine
, with a
0-62 mph time of 5.1 seconds
yet also returning up to
, in the A6 Saloon, Avant, allroad and A7 Sportback ranges – all with the quattro four-wheel drive system.
There’s also 313 PS, and a massive 650 Nm torque – overall this is a highly impressive set of statistics.
The new twin-turbo V6 is the most powerful six-cylinder diesel engine ever offered by Audi and it comes with an exhaust-mounted sound actuator that gives it a sporty sound.
Slotting in above the single-turbo 204PS and 245PS versions of the 3.0 TDI that already feature in the A6 and A7 Sportback ranges, the latest V6 has a two-stage turbocharger group that delivers a maximum boost pressure of up to 3.2 bar, helping the A6 3.0 BiTDI quattro Saloon to pass the 62 mph marker in as little as 5.1 seconds, and the A6 Avant and A7 Sportback to do the same in just 5.3 seconds. All have an electronically limited top speed of 155 mph.
Like the existing TDI engines, the new unit includes start-stop and recuperation systems and the innovative thermal management system that quickly brings the coolant and oil up to their operating temperatures. With their help, combined economy in A6 and A7 Sportback models is 44.1 mpg.
The BiTDI A6 and A7 Sportback models have an actuator in the auxiliary channel of the exhaust system, which consists of a speaker which imposes a defined oscillation pattern on the exhaust flow and transforms the typical TDI exhaust note into a sound that is closer to the output of a high-performance petrol engine.
Power is transmitted from the BiTDI engine via an eight-speed tiptronic transmission to the latest generation quattro all-wheel-drive system, which features a self-locking centre differential and torque vectoring for optimum traction and stability. A sport differential which distributes power in continuously variable proportions between the rear wheels is available from the options list to sharpen and quicken response even further.
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 unit.
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.
The BiTDI unit is available now in A6 models priced from £43,810, and from £51,645 in the A7 Sportback.
• Read our Audi A6 2.0 TDI road test
• Read our Audi A6 Avant 2.0 TDI road test