BMW is equipping its revised 7-series with its mighty tri-turbocharged 3.0-litre diesel engine – the most powerful six-cylinder oil-burner in the world. The new 376bhp, 546lb ft 750d xDrive is the chief addition to the range, which has undergone scores of revisions as part of its mid-life facelift.
Other additions to the line-up include an ActiveHybrid 7 model, while an eight-speed gearbox is now standard across the range. There’s also subtle exterior styling tweaks, a whole host of new safety technology, a boost in interior equipment levels and revised chassis settings designed to iron out the 7-series’ notoriously lumpy ride quality.
The potent six-cylinder diesel engine – first seen in the M550d, X5 50d and X6 50d – allows the 750d xDrive to crack 0-62mph in just 4.9sec, and still return 44.1mpg combined economy and CO2 emissions of just 169g/km.
However, as with the M550d xDrive, UK buyers are unlikely to be able to be initially offered the 750d xDrive from launch as BMW does not sell the 7-series in the UK with all-wheel drive. But should the initially all-wheel drive 3-series models due by the end of the year be a success, BMW is open to bringing more models to the UK.
The ActiveHybrid 7 uses a more powerful version of the petrol-electric hybrid drivetrain from the smaller ActiveHybrid 3 and ActiveHybrid 5. This mixes a 3.0-litre straight-six petrol engine with an electric motor for a combined output of 349bhp and 369lb ft.
Petrol models in the 7-series range include the 255bhp 730i (highly unlikely to make it to the UK), 316bhp 740i, 443bhp 750i and the range topping, V12-powered 760i with 536bhp. On the diesel front, there’s the base 255bhp 730d and mid-range 308bhp 740d, as well as the range-topping 750d xDrive.