BMW 7 Series (E65/E66)

The fourth-generation 7 Series reached UK showrooms in 2002 as the E65 saloon and E66 long-wheelbase Li, and it remains the most divisive flagship BMW ever built. It introduced iDrive, an electric parking brake and active anti-roll bars, so there is more early-2000s technology to go wrong here than in any rival. UK cars were mostly 730d and 730i, with a handful of 735i and 745i V8s and the rare 760i V12; the diesel is the sensible choice for high-mileage cruising. Buy on condition and paperwork rather than specification: a well-kept 730d with working electronics is a lot of car for the money, while a neglected V8 can cost its purchase price again in one repair. A specialist inspection before purchase is essential.