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The next-generation Audi S7 have been spotted testing at the Nürburgring, the natural habitat for performance models before they are unveiled publicly. Behind the camouflage, the all-new design can be seen to draw influences from the Prologue concept, whilst retaining the sweeping roofline from the current-generation model.

Starting from the front, the signature Audi grille is now larger, taking up more visual width at the front of the car, and like on the Prologue, a slim, wide air inlet beneath it. The headlamp design also draws from the Prologue concept, sporting a more angular, knife-like outline.

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Details as to what exactly is under the hood are still scarce. However it can be expected to use a 3.0 litre turbocharged V6 in place of the 4.0 litre biturbo V8 configuration, and produce more than the 450 PS on offer from the current S7. All-wheel-drive is an Audi staple, meaning that you can expect it to feature in the upcoming S7 along with a dual-clutch transmission.

Technological advances specific to the S7 aren’t clear yet, but the advent of new-generation Audis can be expected to herald innovations such as a 48-volt electrical architecture, which can offer electric turbocharging on certain models in the Volkswagen Group – such as on the Audi SQ7 TDI and the Bentley Bentayga Diesel.