The modelRead full review
In 840d form, the 8 Series is in a class of its own: a diesel luxury coupé that’s relatively cheap to run, offers very strong performance and is capable of covering long distances between fill-ups. But the petrol M850i is harder to justify, being less comfortable than the Mercedes-Benz S560 Coupé and less entertaining than the Porsche 911 and Aston Martin DB11.get the best price
The trimSee full equipment
The M850i adds a sports exhaust system, lightweight 20in wheels and the M Sport differential, for added cornering traction.
The engineSee full engine specs
The M850i's 4.4-litre twin-turbo V8 feels immensely strong, but is impressively refined when you want it to be, imbuing the 8 Series with a sense of duality that entirely befits a continent-crushing GT. And, with the added traction of xDrive four-wheel drive, you can deploy all 523bhp with virtually no drama.
Good to drive, but chief rivals are better sports ca...
Despite having four doors, you still trade practicality for st...
An accomplished and rapid all-weather grand tourer, but the Au...
The supremely refined Mercedes S-Class Coupé is fast, luxuriou...