Mercedes S 350 d - Best diesels
Massive road presence and a cosseting interior mean the Mercedes S-Class is our top luxury car, and it's at its best in diesel guise

If you want the ultimate in luxury diesel driving, then look no further than the Mercedes S-Class.
Actually, that's not strictly true. Mercedes offers a hybrid S-Class as a true economy champ, but the hybrid power train isn't so suited to the car as this diesel engine. The 3.0-litre twin-turbo V6 is super-smooth yet seriously quick with 0-62mph taking just 6.0 seconds - quite a feat in a car weighing nearly 2 tonnes. Yet driven carefully it will return 52mpg.
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The Mercedes S-Class has always been a showcase for the absolute latest technology and this one doesn't disappoint, with two 12-inch screens in the dash, mobile data, optional night vision, reclining rear seats and an industry first - there isn't a single filament lightbulb on the car.
When it comes to luxury limos, the S-Class stands head-and-shoulders above its rivals.