BMW iX3 (2021-present): dimensions and boot space

Everything you need to know about the dimensions of the electric BMW iX3, including width, length, height and boot size

Sam Naylor
Jun 17, 2022

The BMW iX3 is an electric SUV that’s closely related to the BMW X3 - hence the name. It uses an 80kWh battery and can drive for up to 285 miles on a single charge, plus it has rapid charging capability for quick top-ups at public charge points.

It’s about the same size and shape as the Mercedes EQC, and rivals include the Hyundai Ioniq 5 and Volvo XC40 P8 Recharge, among many others. Electric SUVs are popular for their low running costs and practicality, and here we’ll look at the iX3’s dimensions and boot space.

You can read more about the model in our BMW iX3 review and buying guide. It’s a quiet, comfortable and good-to-drive SUV that’s great for families that don’t need the very highest range, and it has a pleasant and high-tech interior. It’s comfortable for the most part, although bumpy roads do sometimes reveal that it’s not perfect in that area, like many large and heavy SUVs.

It’s got 286hp from its rear-mounted electric motors, which means performance is good with 0-62mph taking 6.8 seconds, and it’s really quiet inside. Read on to find out more about the BMW iX3 and how big it is inside and out.


BMW iX3 dimensions

The BMW iX3 is 4,734mm long, so it’s slightly shorter than the Mercedes EQC, which measures in at 4,762mm long. Both of these models are longer than the Hyundai Ioniq 5, which is 4,635mm long.

With the mirrors folded in the iX3 is 1,891mm wide, which makes it quite a large car. It means there’s plenty of interior space, too, but it's not the easiest car to drive on tight lanes and when getting into parking spots. With the mirrors out, it’s 2,138mm wide. The EQC is thinner, at 1,884mm wide.

Yet the iX3 is taller than its rival, at 1,668mm - the Mercedes is 1,624mm high. The Hyundai Ioniq 5 is about the same width as the iX3 but quite a bit shorter, at 1,605mm tall. It’s larger than it looks inside, though, as the Hyundai feels very roomy inside. The BMW is good for passengers but can feel a little gloomy in the back seats as not as much light is let in.

BMW iX34,734mm1,891mm1,668mm

BMW iX3 boot space

BMW iX3 boot view

All versions of the BMW iX3 have the same amount of boot space, at 510 litres. This means the load space is bigger than the Mercedes EQC, which has 500 litres, though it’s not by much. The Hyundai Ioniq 5 has 527 litres of space in the back, which is really impressive - and it’s easier to load than the BMW as well, since it’s a bit lower down.

Yet the BMW is at its most impressive with the rear seats folded down. In this configuration it has 1,560 litres of space, which is plenty for almost anyone. It’s really roomy in the back and you should be able to fit bikes and other big items inside. The Hyundai has a bit more room again, at 1,587 litres, while the Mercedes has only 1,460 litres in this mode.

Boot spaceSeats upSeats down
BMW iX3510 litres1,560 litres


BMW iX3 towing capacity

If you need to tow a trailer, don’t buy a BMW iX3. It’s able to tow up to 750kg, braked or unbraked. This is pretty poor and doesn’t match its rivals. For example, the Hyundai Ioniq 5 can tow up to 1,600kg and the Mercedes EQC can pull up to 1,800kg.

These cars are clearly much better options for towing, although electric cars in general aren’t a good choice because you will lose a huge amount of range when pulling a heavy trailer, which limits their usability.

ModelTowing capacity
BMW iX3750kg

BMW iX3 weight

BMW iX3 rear view

The BMW iX3 is a very heavy car, at 2,255kg. This is the car’s kerbweight figure, which is useful to compare to other similar models, and it’s the same whether you go for the M Sport or M Sport Pro version.

The Mercedes EQC is even heavier, at more than 2,400kg and the Hyundai Ioniq 5 weighs less, at around 2,100kg. All of these cars are about twice as heavy as a typical city car, though, and potentially around 500kg or so heavier than equivalent petrol or diesel models, which is disappointing. Weight is hugely important when it comes to efficiency and comfort, not to mention handling and performance - in all of these cases, lighter is better.

BMW iX32,255kg



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