BMW 3 Series Saloon (2019-present): dimensions and boot space

The length, height, width and interior dimensions of the BMW 3 Series – all the key stats you need to know

Matt Rigby
Jan 31, 2022

The BMW 3 Series is very much the classic sporty upmarket saloon - both in terms of its styling and how it drives. It’s always been a car that balances driving fun, providing transport for business travel and commuting duties, and offering enough flexibility in terms of boot space and rear-seat room to make an effective family car.

The version of the BMW 3 Series launched in 2019 remains faithful to this impressive blend of abilities, yet brings modern twists such as mild hybrid and plug-in hybrid technology, with the latter allowing you to travel short distances on electricity alone, provided you charge up the battery first.

There’s also plenty of advanced safety equipment. Some of this is standard (such as autonomous emergency braking), some optional (such as the adaptive cruise control that will help you accelerate, brake and even steer) and some available on higher-spec models (such as the adaptive suspension).

There’s a huge range of engine choices, from ultra-efficient diesels to high-performance six-cylinder petrol models, and even the plug-in hybrid 330e. Trim choices are a bit more limited, extending to SE, Sport and M Sport, but even entry-level SE cars are well equipped.

The BMW 3 Series is available on BuyaCar from £567 per month with PCP finance. Carry on reading below to find out more about its dimensions and boot space.


BMW 3 Series Saloon dimensions

The BMW 3 Series is a relatively large car - certainly it’s significantly longer than a family hatchback such as the Volkswagen Golf. So although it’s often labelled as a ‘compact executive’ model, at 4.7m in length and 1.8m wide (or just over 2m if you take the door mirrors into account), it’s not small. Length and width are the same, whether you're looking at the regular saloon or the Touring estate. It’s also 1.4m tall.

These figures are pretty similar to the dimensions of the main 3 Series rivals, and parking sensors are standard fit front and rear, so it’s actually quite an easy car to manoeuvre into and out of tight parking spaces.

Interior space is generous for both those in the front and those in the rear. In fact, the 3 Series is roomier than most key rivals, and it’s especially spacious for this type of car if you’re looking to squeeze three passengers in the rear seats.

BMW 3 Series Saloon4,709mm1,827mm1,437mm
BMW 330e4,709mm1,827mm1,444mm
BMW M340i/M340d4,713mm1,827mm1,440mm
BMW M34,794mm1,903mm1,433mm - 1,434mm

BMW 3 Series Saloon boot space

BMW 3 Series Saloon boot view

There’s 480 litres of space in the boot of a regular BMW 3 Series saloon, although that drops to just 400 with the 330e plug-in hybrid, as the batteries take up some of the space in the boot.

Hybrid model aside, 480 litres is a decent size - a little more than the 455 litres you get in the Mercedes C-Class but the same size as the Audi A4's boot. It is, however, better shaped than the boot in either of these two rivals, so is more practical for squeezing in suitcases and other bulky items. You can also accommodate longer items by folding down the rear seats.

With the Touring estate car body shape, the 480 litres available in the saloon increases to a slightly more practical 500 litres. More useful is the fact that the hatchback tailgate makes for a more flexible load bay with greater access - especially since it’s a two-piece affair, with the option to open just the glass area if you only need to load or unload small objects. Fold the seats down and you get 1,500 litres of room.

Tho Volvo V60 estate has a little more room with a boot size of 529 litres with the rear seats in place, but if you need a lot more room for luggage and don’t want an estate car, the Volkswagen Passat (585 litres) or the Skoda Superb (625 litres) will provide it, albeit without the cachet of such an upmarket badge.

Boot spaceSeats upSeats down
BMW 3 Series Saloon400-480 litres1,500 litres


BMW 3 Series Saloon towing capacity

The lower-powered 3 Series models are a bit more limited in their towing capacity, with models like the 318i only able to haul 1,300kg. That’s not too bad  but isn't great for this type of car, and other models are able to tow up to 1,800kg, which makes them quite effective tow cars.

This is especially true because the higher-powered diesels are fairly heavy, which makes them more stable as a towing platform and less likely to be thrown off course by a heavy trailer or caravan. The four-wheel-drive xDrive models, with their extra traction, are ideal for hauling a caravan or a horse box over slippery ground, too.

BMW 3 Series Saloon weight

The kerb weight is the key figure to understand when you’re looking at how heavy a car is. It measure the weight of the car, but also adds the fluids in the engine, a tank of fuel and an extra 75kg to simulate the weight of a driver.

With the BMW 3 Series, the kerb weight will depend on the model and specification. It can be as low as 1,565kg or as much as 1,965kg. The lower figures are reasonably light for this type of car, though the later is pretty high for a car of this size.

BMW 3 Series Saloon1,565kg - 1,965kg
BMW 330e1,845kg - 1,895kg
BMW M340i/M340d1,810kg - 1,895kg
BMW M31,805kg - 1,855kg



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