Passenger & boot space
How it copes with people and clutter
This is where the Audi RS6 wins major points in the "only car you’ll ever need" stakes. Despite having enough performance to embarrass most supercars, the RS6 is practical enough to transport you, your family and your luggage from anywhere in the UK to the south of France without breaking a sweat.
It's big enough in the front that you're unlikely to find even two sizeable adults complaining that they feel hemmed in, and the interior feels more open and airy than the more enveloping insides of the Mercedes-AMG E63 S and Porsche Panamera Sport Turismo.