When it comes to performance premium medium size vehicles, Audi is always on the podium with its very well known S6.
This time, they did a different job, proposing a turbodiesel version for Europe and a gasoline one for the U.S. market. Yeah, we know the word diesels are for trucks. But trust us, you could love this kind of “truck”.
Spacious inside, with a kind of mean look on the outside, the S6 is what the Germans would call an “autobahn cruiser”. The kind of vehicle that some could set the adaptive cruise control on the highway at 155 MPH (250 kph) and keep it on the left lane.
The 3.0-liter V6 diesel engine is fed via a system comprising an electric supercharger and a turbocharger that boosts the maximum torque from as low as 2.500 rpm and keeps it up until 3.100 rpm. This might seem as a low torque range for a gasoline engine, but for a turbodiesel is more than enough. This flat curve torque sits at 700 Nm (516.3 lb-ft), helping the big sedan to stop the 0 to 62 mph (100 kph) timer in 5 seconds flat. To achieve this performance, Audi installed an electric supercharger that spins at around 70.000 rpm and compensates the air-flow when the turbocharger doesn’t have enough air to spin. This set-up cuts the turbo-lag.
Audi engineers installed the Quattro all-wheel-drive system and also an all-wheel steering system. On top of that, the suspension is enhanced with an electronic adaptive system. Last but not least, as an option, it can be fitted with a sport differential for the rear axle.
For outside Europe, the S6 is offered with a twin-turbo V6-gasoline engine developing 450 HP and 600 Nm (442.5). This version is also fitted with the electric supercharger (EPC).