Possibly influenced by the success of BMW’s twin-turbo diesel engines, Audi has released its most potent V6 TDI ever. It will first be seen in the A6 and A7 models and boasts 313hp from 3900-4500rpm and in impressive 480 lb-ft torque from 1450-2800rpm. What’s more, the cars will accelerate 0-62mph in just over 5sec and return up to 36.7mpg US.
Audi has gone a stage further in making this engine a sporting option by including a sound actuator in the exhaust system. This allows the remarkable performance of the TDI to be accompanied by a sportscar-like exhaust note.
This new V6 engine will slot in above the single-turbo 204hp and 245hp versions of the 3.0L V6 TDI already available in Europe in the A6 and A7 ranges. The latest V6 has a two-stage turbo system that delivers maximum boost of up to 47psi, helping the A6 3.0 BiTDI quattro sedan hit 62mph in as little as 5.1sec, while the A7 does the same in 5.3sec. An electronically limited top speed of 155mph is common to all versions.
Like the existing TDI engines, the V6 is backed by including start-stop and recuperation systems as well as thermal management that quickly brings the coolant and oil up to operating temperatures.
The sound actuator sits in the auxiliary channel of the exhaust system and essentially consists of a loudspeaker that provides a defined oscillation pattern in the exhaust flow to transform the typical TDI exhaust note into a more sporty roar.
In all versions, power is transmitted from the BiTDI via an eight-speed tiptronic transmission to the latest quattro all-wheel-drive system, which features a self-locking center differential and torque vectoring. A rear sport differential, that distributes power in variable proportions between the rear wheels, is available from the options list.