BMW 8 Series 840d 2018 first drive

Well, among coupés it’s a rarity. One of the first things you’ll notice about the new BMW 840d xDrive Coupe, once you start looking for decent diesel coupé rivals in its £75,000 price category, is that there aren’t any.

True, there are one or two sleek four-doors in the price ballpark, such as the Porsche Panamera. And the most powerful Audi A7 TDI Sportback packs nearly as much diesel punch at a lower price. But there are no honest-to-God coupé rivals. Not with this car’s neat mix of luxury and sportiness. All of which makes the 840d either a welcome rarity or an irrelevance, depending on your attitude to buying a new diesel car as we look down the barrel of the 2020s.

The obvious headline grabber in this new two-car line-up is the 523bhp twin-turbo V8 M850i that offers acceleration in the supercar class but can’t cruise nearly as far on a tankful and has a £24,000 higher starting price. The V8’s performance margin is something only a few owners will ever use, given that the calmer 3.0-litre, 316bhp 840d can still lay down a 4.9sec 0-62mph time, and matches the M850i’s governed 155mph top speed.

Few will be able to tell the difference easily between the two 8 Series models, at a casual glance. The UK importer has ensured both get M-level front spoilers, side skirts and rear spoilers, and the diesel has identical-looking exhausts and 20in Y-spoke wheels just like its petrol sibling. Only difference is that the diesel comes with run-flat tyres as standard, although you don’t have to take those if you don’t want to.

Inside, there’s the same progressive but very recognisably BMW layout, with plenty of smart piano black and brightwork in our test car. The fascia now features a new, even more configurable iDrive 7.0 system, and there are screens ahead of the driver to carry the major instruments as well as the massive affair above the centre console. There’s a head-up display, too, if you’d rather not look at any of the interior gubbins.

Thanks to the UK importer’s deep knowledge of local BMW driver preferences, the 840d comes as standard with most of the extensive driver aids and traction-keeping devices offered by its pricier stablemate, starting with the xDrive smart 4WD system and integral active steering, which quickens and lightens steering in slow, tight corners.

It all makes a satisfyingly impressive package for the long-distance driver, which is how you’ll soon view yourself (even for a trip to the shops) in this 840d, thanks to superb seats set low in the car, and a relaxed, long-legged powertrain that trades on torque in the Comfort driving mode you’ll be inclined to use most, rather than Sport or Eco-pro.