BMW X3 (2018-present): dimensions and boot space

Weight, length, width, height and towing capacity – these are all the key measurements you need to know about the BMW X3

Matt Rigby
Mar 29, 2022

The BMW X3 is a bit of an SUV sweet spot. It’s not the largest BMW SUV, but it’s big enough to be both spacious and feel suitably imposing, and it’s perfect for a growing family while still small enough not to feel unwieldy in city driving.

Rivals include the Audi Q5, Mercedes GLC and Volvo XC60 - along with the Land Rover Discovery Sport, which is the only alternative that offers the option of seven seats.

The X3, though, is undoubtedly the most sporty-feeling of its main rivals. A car this big is never really going to feel like a hot hatchback or an out-and-out sports car, but if you want a large SUV that’s still fine to drive, this should be on your shopping list.

You can get a variety of diesel and petrol engine choices, plus a plug-in hybrid that will suit you if you’re a company car driver or want the ability to run for short distances on electric power alone - provided you charge the car regularly.

The diesel models make the most sense if you cover a lot of miles, with the 190hp xDrive20d, in particular, offering up to 47.9mpg, which is impressive for a car of this size and performance. More powerful six-cylinder diesels are faster and almost as efficient, but you will pay for the privilege with higher initial prices.

The petrol engine range includes the high-performance 360hp M40i and the super-fast 510hp X3 M Competition, but the latter is significantly more expensive than any other model in the X3 range.

All X3s are four-wheel-drive and all are fitted with an eight-speed automatic gearbox as standard, so there's little to choose from on that front.

Inside you’ll find a well-designed dash layout, comfortable and supportive seats and plenty of standard equipment even on entry-level models - every car comes with cruise control, three-zone climate control and heated leather seats, among plenty of other goodies.

The large central touchscreen information and media system is clear and easy to use, too, and the physical 'iDrive' rotary controller is an effective alternative to using the touch interface as it’s less distracting to use when you're on the move.

Rear-seat passengers are fairly well provided for, though if you’re planning to carry three occupants in the rear on a regular basis an Audi Q5 or Volvo XC60 would give you more shoulder room.


BMW X3 dimensions

At 4,708mm long, 1,891mm wide (measuring in at just over 2.1 metres when you factor in the extra width of the door mirrors) and 1,676mm tall, the BMW X3 is very close in size to the Volvo XC60, Mercedes GLC and Audi Q5 - its key rivals.

It’s also about the same size in terms of its length as a 3 Series saloon, though the X3 is a much taller machine, with a higher driving position.

The X3's dimensions mean it’s fairly wide and long, meaning that tight parking spaces can be a bit of a squeeze. But there’s good all-round visibility, and standard parking sensors take the stress out of awkward busy car parks.

BMW X34,708mm1,891mm1,676mm

BMW X3 boot space

BMW X3 boot view

You can fit up to 550 litres of luggage into the boot of the BMW X3. This is identical to the amount of room you’ll find in the boot of the Audi Q5 and Mercedes GLC, but a touch more than the 541-litre boot of the Land Rover Discovery Sport, and a fair bit more than the 483-litre boot of the Volvo XC60. Fold the rear seats down and there’s 1,600 litres of space - enough for most of the bulky loads you're likely to try to fit into the X3, whether that's a selection of flat-pack furniture, camping gear, children's bikes or a number of large dogs.

So it is a reasonable size, but the X3 doesn’t offer rear seats that slide back and forth, unlike the Discovery Sport and Q5, meaning that it loses out a little on the seating practicality front.

One other caveat is that the plug-in hybrid model loses 100 litres of space due to the fact that the battery pack for the electric motor sits beneath the boot floor, making the available boot space more shallow compared with the rest of the X3 range.

Boot spaceSeats upSeats down
BMW X3550 litres1,600 litres
BMW X3 xDrive30e450 litres1,500 litres


BMW X3 towing capacity

The solid, sensible and - most importantly - heavy BMW X3 is a good platform for towing. Plus, with four-wheel-drive, it's better suited to handling muddy campsites or paddocks than two-wheel-drive alternatives.

Most versions are rated to tow a substantial 2,000kg - even the plug-in hybrid and entry-level xDrive20i petrol models. If you can step up to the range-topping X3 M Competition, however, there’s a very large towing capacity of 2,400kg on offer. Yes, larger SUVs may offer up to 3,500kg, but considering the size of the X3, these figures are strong and enable it to tow a variety of trailers and caravans.

BMW X3 weight

BMW X3 rear view

The best real-world measure of how heavy a car is, is its kerb weight. This is because this measure includes the weight of the lubricants and other fluids in the engine, a tank of fuel and an extra 75kg to represent the weight of a driver plus a few items of luggage.

In the case of the BMW X3 - and indeed most other cars - its exact kerb weight varies depending on the trim level and engine fitted. The lightest X3 weighs in at 1,875kg (the xDrive20i), while the heaviest model is the M40d, with its powerful but hefty diesel engine, weighing in at 2,080kg. The plug-in hybrid model actually is a little lighter, weighing 2,065kg, which is surprising, considering that the addition of a battery pack and electric motor normally make plug-in hybrid models the heaviest in the range.

BMW X31,875kg - 2,080kg



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