What alternatives should I consider to a used BMW 6 Series hatchback?
The progenitor of this car, the BMW 5 Series Gran Turismo, more or less had the marketplace to itself. The lower and better-looking 6 GT is a more credible rival for the current crop of fastback-style coupe-saloons.
The Audi A7 Sportback comes with a smooth and punchy petrol engine, in its 45 TFSI guise, that makes it an ultra-quiet cruiser. Its high-grade interior is another factor in its favour.