Today, I would like you to show the difference between Mercedes GLB vs BMW X3 in this simple technical comparison. If you are looking for your next vehicle, this might be helpful.

Please note that this is only a technical comparison, based solely on the technical data of both cars. Not a real-life 2021 Mercedes GLB vs 2021 BMW X3 review.

In the video and in the article below, you can find the differences between GLB vs X3 in the following categories:

• External dimensions (length, width, height, wheelbase, ground clearance)
• Interior dimensions (headroom, legroom, shoulder room)
• Cargo volume/luggage compartment, weight
• Maximum power, maximum torque, top speed, acceleration 0-100 km/h / 0-62 mph
• Safety (Euro NCAP crash test results)

Exterior dimensions: BMW X3 is bigger on the outside

Mercedes GLB is 4634 mm / 182,4 inches long, 1834 mm / 72,2 inches wide, 1658 mm / 65,3 inches high, and has 2829 mm / 111,4 inches long wheelbase. Its ground clearance is 200 mm / 7,9 inches.

BMW X3 is 4708 mm / 185,4 inches long, 1891 mm / 74,4 inches wide, 1676 mm / 66 inches high, and has 2864 mm / 112,8 inches long wheelbase. Its ground clearance is 204 mm / 8 inches.

That means that Mercedes GLB is 74 mm shorter, 57 mm narrower, 18 mm lower, with 35 mm shorter wheelbase, and has 4 mm less ground clearance compared to BMW X3. On the outside, it looks like Mercedes is trying to compensate for the lack of centimeters with a more boxy shape and steeper rear end.

If you believe Mercedes GLB should be compared with X3’s smaller brothers, I have a similar comparison of X1 vs X2.

Luggage compartment and weight: GLB vs X3

Mercedes GLB has 570 liters of luggage volume (VDA, seats up). With rear seats folded down, the cargo capacity extends to 1805 liters.

On the other hand, BMW X3 has 550 liters of luggage volume (VDA, seats up). With rear seats folded down, the cargo capacity extends to 1600 liters.

Therefore, Mercedes GLB has 20 liters more volume when seats are up, and 205 liters more volume when the rear seats are folded down. That boxy shape really helps here, doesn’t it?

Mercedes GLB vs BMW X3 engines

The engine power of Mercedes GLB ranges from 116 HP / 85 kW to 306 HP / 225 kW. The maximum torque is available from 250 Nm / 184 lb.ft. to 400 Nm / 295 lb.ft.

BMW X3 engines are available from 184 HP / 135 kW to 510 HP / 375 kW. Depending on the engine, the maximum torque is available from 290 Nm / 214 lb.ft. to 680 Nm / 502 lb.ft.

The Bavarian is a clear winner here if you are mostly looking for more power.

X3 outperforms GLB

The slowest Mercedes GLB has a top speed of 188 km/h / 117 mph, while the fastest version can go up to 250 km/h / 155 mph.

The slowest BMW X3 reaches the maximum speed of 213 km/h / 132 mph, and the fastest option available goes to 285 km/h / 177 mph.

Mercedes GLB accelerates from 0-100 kilometers per hour (0-62 miles per hour) between 11,3 (slowest version) and 5,2 seconds (quickest version).

The technical specification for BMW X3 shows that this car model accelerates from 0-100 kilometers per hour (0-62 miles per hour) between 8,3 (slowest version) and 4,1 seconds (quickest version).

Again, BMW X3 is obviously aiming at customers who like to drive fast(er), but also Mercedes GLB can be very quick and fast with its top of the range engine.

GLB vs X3 price comparison

The prices and availability of the specific car model may vary from country to country, but based on the markets we monitor (mainly the USA, UK, and Germany), we can say that Mercedes GLB might be on average between 10-20% cheaper, comparing the base model price of both cars. For more info, please check the price comparison chapter in the above video.

Video: World Auto Evolution