BMW 4 Series Coupe (2020-present): dimensions and boot space

All the key statistics you need to know for the BMW 4 Series Coupe, including length, height, width and boot size

Matt Rigby
Mar 28, 2022

If you value a sporty driving experience and sleek coupe looks but still need a reasonable amount of boot space and to make occasional use of rear seats, then the latest version of the BMW 4 Series could well fit the bill perfectly.

As you would expect of a BMW - a company whose reputation has been built on building sporty-feeling cars - all 4 Series models are fun to drive, whether they’re the more affordable four-cylinder petrol models like the 420i and 430i, the fuel-efficient 420d diesel model or the more powerful and performance-focused M440i xDrive, which is capable of racing from 0-62mph in less than five seconds.

Although the model is closely related to the 3 Series saloon and estate models, the 4 Series is lower and wider, which makes it both sleeker looking and gives it a lower centre of gravity, which makes it feel more agile on twisty country roads.

Inside, you’ll recognise much of what you see if you’re familiar with the 3 Series, but that’s no bad thing, because the dashboard is thoughtfully laid out and well built, plus the 'iDrive' rotary controller is ideal for adjusting the stereo or sat-nav on the move and with minimal distraction from the road.

All 4 Series are very well equipped - there’s no entry-level SE or Sport trim as there is in the BMW 3 Series as all models start from high-spec M Sport trim - so you get heated leather seats, a digital driver’s display, cruise control and three-zone climate control on every car.

If you’re after a bit more rear-seat space and a more practical boot, then the hatchback 4 Series Gran Coupe maintains the regular coupe’s sleek style - and frameless windows - but adds an extra pair of rear doors and a more accessible, bigger load area.


BMW 4 Series Coupe dimensions

Coupes are often compact in terms of their dimensions, but in the case of the 4 Series, it’s designed to accommodate rear-seat passengers from time to time, and to carry a reasonable amount of language. This means it’s actually quite a large car. In fact, at 4,768mm long it’s 60mm longer than the BMW 3 Series saloon.

It’s also marginally wider than the 3 Series, at 1,852mm (measuring in at just over 2 metres when you add in the extra width of the door mirrors). It is also lower than the 3 Series, its height of 1,383mm making it just over 60mm lower than the equivalent 3 Series saloon and adding to the sleek looks.

But while the 4 Series is a relatively large car, it’s not significantly bigger than the Audi A5 Coupe and the Mercedes C-Class Coupe. All three cars, though, offer slightly limited over-the-shoulder visibility, owing to their sloping rooflines and making tight car parks a little tricky to handle. That being said, there are parking sensors to help you out, and the visibility from inside the Ford Mustang is even worse for manoeuvring.

BMW 4 Series Coupe4,768mm1,852mm1,383mm
BMW M4 Competition Coupe4,794mm1,887mm1,393mm - 1,394mm

BMW 4 Series Coupe boot space

With 440 litres of boot space, the 4 Series can easily accommodate a couple of sets of golf clubs or enough for a weekend away. In fact, it offers 40 litres more room than you’ll find in the rear of a Mercedes C-Class Coupe, but it is a little shy of the 450 litres of room available in the boot of the Audi A5. The Mercedes and the Audi have a slightly better-shaped boot opening, too.

Nevertheless, the luggage space in the 4 Series is quite impressive, being only 40 litres less than you get in the 3 Series saloon. And you can fold the rear seats down to carry longer objects when necessary, too.

However, the really practical 4 Series when it comes to boot space is the Gran Coupe. This gets a 470-litre boot (only 10 litres smaller than the 3 Series saloon’s) and 1,290 litres of space when you fold the rear seats down. Plus, because the sleek fastback shape includes a hatchback tailgate, access to the boot is easier.

Boot spaceBoot space
BMW 4 Series Coupe440 litres
BMW M4 Competition Coupe440 litres


BMW 4 Series Coupe towing capacity

The official towing capacity for the BMW 4 Series is up to 1,800kg, but that’s only for the M440i xDrive model. All the other 4 Series models are rated at 1,600kg. This means that the 4 Series is capable of towing some quite large and heavy loads for this type of car, though you're better off using a more weighty car if you plan to regularly tow loads that near the 4 Series' maximum official limits.

The extra traction of the xDrive four-wheel-drive models provides useful extra traction for pulling trailers on slippery surfaces, too, so if you want a sporty car that can also handle heavy trailers or caravans, the 4 Series is a good option.

BMW 4 Series Coupe weight

BMW 4 Series Coupe rear view

Kerb weight is the main measure to consider when looking at how much a car weighs. This combines the ‘dry’ weight of the car, plus the oils and other fluids used in the engine and ancillary systems, a tank of fuel and 75kg to represent the weight of a driver and a little luggage.

The 4 Series weighs between 1,525kg for the rear-wheel-drive 420i and 1,830kg for the M440d xDrive with its larger, heavier diesel engine and the extra weight of its four-wheel-drive system. If it’s a Gran Coupe you’re considering, this adds around 100kg of weight on top of the equivalent two-door coupe models.

BMW 4 Series Coupe1,525kg - 1,830kg
BMW M4 Competition Coupe1,800kg - 1,850kg



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