Audi - A8

The A8 is massive, both outside and in even though it looks like a bigger A4. The cabin is light, airy and spacious. Ergonomics are good, although some of the switchgear feels slightly old-fashioned by modern standards, especially the heater controls. Many control functions are delegated to a turn-and-click knob, dubbed MMI, which takes some getting used to, although is far better than BMW's i-Drive. Rear seat space is generous and the boot in huge by class standards. Two V8 petrol engines are available from launch - in 3.7 and 4.2 litre flavours - both offering extremely rapid performance through the standard-fit six-speed automatic gearbox. Handling is responsive if not quite up to the excellence of the Jaguar XJ or BMW 7 Series and the ride can get crashy on the larger optional alloy wheels. Other versions follow later, including a 4.0 litre V8 turbodiesel and a 6.0 litre petrol W12.