BMW 4 Series Gran Coupe (2021-present): dimensions and boot space

The vital statistics of the BMW 4 Series Gran Coupe that you need to know: length, width, height and weight

May 25, 2022

If you’re charmed by the sporty looks of a coupe body style, but you need the boot space and useful rear seats of a normal family car, then the BMW 4 Series Gran Coupe could be the right car for you. It’s very similar under the skin to both the two-door 4 Series Coupe and the regular 3 Series Saloon, but with a swooping roofline and a low, wide look that sets it apart from the more ordinary-looking 3 Series Saloon, while the extra rear doors and hatchback boot mean you won’t mistake it for a two-door 4 Series.

BMW has a reputation for making cars that are fun to drive, and this is most certainly true with the 4 Series Gran Coupe, whether it’s the cheaper, more fuel-efficient models such as the 420i and 420d or the faster and more performance-oriented M440i xDrive, with 374hp and standard four-wheel-drive.

The 4 Series is mechanically similar to the 3 Series Saloon and Touring estate, but it sits lower to the ground and is wider, which makes it feel more sporty on twisty country roads.

It’s very similar inside to a 3 Series, too. This means the dashboard is well built and well designed, and the 'iDrive' media system's rotary controller means you can adjust the car’s entertainment and information systems while you’re on the move without having to take your eyes away from the road - even though the system is also a touch screen.

Equipment levels are equally impressive; every car is high-spec M Sport trim and so gets a digital driver’s display, cruise control, three-zone climate control and heated leather seats.

Of course, the trump card of the 4 Series Gran Coupe is its versatility. The rear doors make the back seats more accessible than in the two-door coupe - they’re more spacious too - and the hatchback boot is much more versatile, with the boot being only 10 litres smaller than the one in a 3 Series Saloon.


BMW 4 Series Gran Coupe dimensions

At 4,783mm long, the 4 Series Gran Coupe is a touch longer than the two-door 4 Series, but only by a couple of centimetres, so you shouldn't notice this in everyday driving. It is, however, 1,852mm wide (increasing to just a little more than two metres wide when you add in the door mirrors), making it identical in width to the two-door model.

Where it differs more greatly is its height - it’s 1,442mm tall, which gives it a higher roofline than the regular coupe, but also makes it taller than the normal 3 Series Saloon. This means that the Gran Coupe can provide impressive headroom for rear-seat passengers.

All this does mean that the 4 Series Gran Coupe is quite big, but it does have reasonable visibility all around - and much better over-the-shoulder visibility than the 4 Series Coupe - plus standard-fit parking sensors.

BMW 4 Series Gran Coupe4,783mm1,852mm1,442mm

BMW 4 Series Gran Coupe boot space

BMW 4 Series Gran Coupe boot view

The luggage capacity of the 4 Series Gran Coupe is an impressive 470 litres. That’s just 10 litres less than you’ll find in the back of a 3 Series Saloon. And with the hatchback bootlid layout in the Gran Coupe, access to that luggage space is much more flexible.

Fold down the rear seats and you’ll find there’s a useful 1,290 litres of room in total for larger, bulkier items, too. Making this space more practical, the rear seats fold down relatively flat, so sliding heavy items forward into the car should be easy enough.

The Audi A5 Sportback is very similar in size, shape and layout to the 4 Series Gran Coupe, but it does have a marginally smaller boot, at 465 litres. The Kia Stinger, meanwhile, despite being a larger car overall, can only muster 406 litres of boot space.

Boot spaceSeats upSeats down
BMW 4 Series Gran Coupe470 litres1,290 litres


BMW 4 Series Gran Coupe towing capacity

Depending on the model, the BMW 4 Series Gran Coupe can tow anywhere between 1,600kg and 1,800kg - which is quite good for a car of this type - but the larger figure is only for the more powerful models such as the M440i xDrive.

The extra traction and grip provided by the 'xDrive' four-wheel-drive models is useful if you need to haul a horsebox or a caravan off a slippery, wet or muddy field.

BMW 4 Series Gran Coupe weight

BMW 4 Series Gran Coupe rear view

When looking at how heavy a car is, the key figure you’re after is the kerb weight. This takes the weight of the car itself, plus 75kg to represent a driver, all the engine’s fluids and a tank of fuel. The Gran Coupe is around 100kg heavier than the equivalent two-door 4 Series.

The 4 Series Gran Coupe’s weight runs from around 1,625kg for a rear-wheel-drive 420i, all the way up to approximately 1,930kg for the M440d xDrive with its heavy diesel engine and four-wheel-drive system.

BMW 4 Series Gran Coupe1,625kg - 1,930kg



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