Nearly new buying guide: Audi A8

One of the most discreet luxury limousines is also one of the bestThe Audi A8, now in its fourth generation, is probably the most discreet luxury limousine around. But don’t mistake discretion for indifference: this is a techno-fest, with a host of features that maintain the A8’s reputation for innovation.
There’s the choice of a 282bhp 3.0-litre diesel (the 50 TDI) or a 335bhp 3.0-litre turbo petrol (the 55 TFSI). Both engines have a mild-hybrid system (a small battery and ele