Skip advert
Advertisement

BMW 640d Gran Coupe

The new four-door 6 Series Gran Coupe looks great and is the best car to drive in its class

Find your BMW 6 Series
Compare deals from trusted partners on this car and previous models.
Or are you looking to sell your car?
Value my car
Fast, no-nonsense car selling
Value my car

At only £1,820 more than the equivalent 640d Coupe, the Gran Coupe looks tempting. It has strong economy and pace, striking looks and a spacious interior. And it’s not just a fine cruiser; specify Adaptive Drive and it outhandles a Mercedes CLS. If a 7 Series is too sensible for you and a 6 Series too cramped, this car fits the bill.

Advertisement - Article continues below

Before the Mercedes CLS arrived in 2004, coupe styling and four-door practicality rarely went hand-in-hand. Since then, the Porsche Panamera and Audi A7 have followed suit, and now BMW has joined the party with the 6 Series Gran Coupe.

The formula for the Gran Coupe is simple. By stretching the 6 Series Coupe’s wheelbase and overall length by 113mm, the company has created space for an extra set of doors, more room in the back and a bigger boot.

The design is familiar, though, with the forward-leaning, kidney grille and shark-like nose lifted from the Coupe, while the stretched profile and low roofline look sporty in a car that’s over five metres long.

On the inside, the driver-orientated dash is also taken from the 6 Series Coupe and overall fit and finish is stunning – easily on a par with the A7.

Skip advert
Advertisement
Skip advert
Advertisement - Article continues below

Used - available now

A-Class

2022 Mercedes

A-Class

41,200 milesAutomaticPetrol1.3L

Cash £15,990
View A-Class
Tucson

2023 Hyundai

Tucson

44,110 milesAutomaticPetrol1.6L

Cash £21,176
View Tucson
500

2024 Fiat

500

25,299 milesManualPetrol1.0L

Cash £9,697
View 500
Model 3 Premium

2023 Tesla

Model 3 Premium

48,000 milesAutomaticElectric

Cash £16,250
View Model 3 Premium

BMW is selling the car as a 4+1, rather than a 2+2 Coupe, so a fifth occupant can straddle the centre console. Even so, rear legroom is generous and unlike in the Coupé the rear seats fold flat, taking boot space from 460 to 1,265 litres.

There’s a choice of three turbo engines, all with an eight-speed auto and stop-start as standard. But our 640d is set to make up at least 80 per cent of UK sales.

Advertisement - Article continues below

Performance is phenomenal: 0-62mph takes 5.4 seconds (the same as the 316bhp 640i, but five-tenths down on the 444bhp 650i), while the 309bhp six-cylinder diesel claims 50.4mpg (14.2mpg more than the 640i) and emits only 148g/km of CO2.

Pull away and the engine feels smooth and hushed, while the eight-speed box shuffles gears swiftly. Squeeze the throttle in any ratio at more than 1,500rpm, and acceleration is incredible, with a roar that sounds almost as good as the six-cylinder petrol’s.

Move up through the driving modes – ECO PRO, Comfort, Comfort+, Sport and Sport+ – and the responses of the box, steering, throttle and stability system get sharper. Sport+ is perfectly judged and fun on twisty roads, relaxing rear-wheel grip.

The Gran Coupe weighs around 70kg more than the equivalent two-door, but is still great to drive. The longer wheelbase improves the ride – it’s supple even in the dampers’ stiffest setting – while the optional Adaptive Drive uses active roll bars to keep the car flat in bends.

Also fitted to our 640d was Integral Active Steering: this turns the rear wheels as well as the fronts and works superbly to ensure crisp responses from the well weighted steering.

UK buyers can pick from SE and M Sport trims, with the latter hiking the price by £4,665. SE has leather trim, sat-nav, 18-inch alloys and heated seats; M Sport adds 19-inch lightweight wheels, a bodykit and sports seats. Buy the right options, and you’ll get a car that sets the new dynamic benchmark for the class.

Skip advert
Advertisement

New & used car deals

Audi A3

Audi A3

RRP £26,310Avg. savings £2,713 off RRP*Used from £9,650
Volkswagen Polo

Volkswagen Polo

RRP £14,495Avg. savings £1,925 off RRP*Used from £6,333
Renault Clio

Renault Clio

RRP £16,175Avg. savings £2,431 off RRP*Used from £7,795
Hyundai Tucson

Hyundai Tucson

RRP £29,840Avg. savings £5,613 off RRP*Used from £11,795
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

New Cupra Raval 2026 review: a true pocket rocket for the EV era
Cupra Raval - front tracking

New Cupra Raval 2026 review: a true pocket rocket for the EV era

The hot little Raval marks the beginning of a very promising new era
Road tests
8 May 2026
Volkswagen T-Roc vs Toyota C-HR: two popular small SUVs, one winner
Volkswagen T-Roc and Toyota C-HR - front tracking

Volkswagen T-Roc vs Toyota C-HR: two popular small SUVs, one winner

The second-generation VW T-Roc has landed to find the Toyota C-HR waiting to challenge it. Which SUV comes out on top?
Car group tests
9 May 2026
Renault 5 gets one-pedal driving for its first birthday
Renault 5 E-Tech Iconic Five - front action

Renault 5 gets one-pedal driving for its first birthday

The funky French EV was the UK’s most popular electric car in April and has upped its game with one-pedal driving
News
7 May 2026