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BMW X6 vs Mercedes GLB comparison

Compare performance (625 HP vs 354 HP), boot space and price (84,100 £ vs 43,200 £ ) at a glance. Find out which car is the better choice for you – BMW X6 or Mercedes GLB?

BMW X6 vs Mercedes GLB: Key differences

BMW X6

4.5 (2 Reviews)
rate
  • considerably more power
  • significantly quicker 0–100 km/h
  • only slightly more trunk space
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Mercedes GLB

3.6 (4 Reviews)
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  • significantly cheaper
  • markedly more efficient
  • markedly lighter
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All details on performance, efficiency, range and trunk space can be found in the technical comparison below – including user reviews for both models.

By Achim Sedelmaier

Here’s where it gets real: The technical differences in detail

X6

Costs and Efficiency:

Looking at overall running costs, both models reveal some interesting differences in everyday economy.

Mercedes GLB is significantly cheaper – starting at 43,200 £ , while the BMW X6 costs 84,100 £ . That’s a price difference of around 40,888 £.

Fuel consumption also shows a difference: the Mercedes GLB uses 5.7 L/100km and is markedly more efficient than the BMW X6 with 7.2 L/100km. The difference is about 1.5 L/100km.

GLB

Engine and Performance:

Power, torque and acceleration say a lot about how a car feels on the road. This is where you see which model delivers more driving dynamics.

When it comes to engine power, the BMW X6 offers considerably more power – delivering 625 HP compared to 354 HP. That’s roughly 271 HP more horsepower.

When accelerating from 0 to 100 km/h, the BMW X6 is significantly quicker – completing the sprint in 3.9 s, while the Mercedes GLB takes 5.5 s. That’s about 1.6 s quicker.

There’s also a difference in torque: the BMW X6 delivers markedly more torque with 750 Nm compared to 515 Nm. That’s about 235 Nm more.

X6

Space and Everyday Use:

Whether family car or daily driver – which one offers more room, flexibility and comfort?

Both vehicles offer seating for 5 people.

In terms of curb weight, Mercedes GLB is markedly lighter – 1,840 kg compared to 2,240 kg. The difference is around 400 kg.

Looking at boot space, the BMW X6 offers only slightly more boot space – 580 L compared to 540 L. That’s a difference of about 40 L.

When it comes to payload, the BMW X6 carries markedly more – 695 kg compared to 505 kg. That’s a difference of about 190 kg.

Who wins the race in the data check?

The BMW X6 holds a decisive overall lead in the objective data comparison.
This result only shows which model scores more points on paper – not which of the two cars feels right for you.

from £84,100
X6

BMW X6

  • Engine Type Petrol MHEV, Diesel MHEV
  • Transmission Automatic
  • Drive Type All-Wheel Drive
  • Power HP 298 - 625 HP
  • Consumption L/100km 7.2 - 12.7 L/100km
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BMW X6
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Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

BMW X6

The BMW X6 wears its coupe-SUV looks like a tuxedo with oversized shoulders, turning everyday traffic into a catwalk whenever it glides past. It serves up sporty handling and a plush cabin with just enough practicality to keep daily life sane — perfect for buyers who crave drama without completely abandoning common sense.

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Reviews BMW X6

4.5 (2 Reviews)
rate
marcus
9 Jun 2026, 16:23:07

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How do you mainly use this car? (optional): Family car
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money
Ioana Annayse Simion
26 Jan 2026, 17:50:11

BMW IS BEST!!!!!!

How do you mainly use this car? (optional): Long-distance driver
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money

Mercedes GLB

The Mercedes GLB is a compact luxury SUV that blends smart packaging with a polished, composed driving experience. Its flexible interior and premium feel make it a sensible pick for buyers who want Mercedes comfort and practicality in a smaller footprint.

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Reviews Mercedes GLB

3.6 (4 Reviews)
rate
Hans
19 Feb 2026, 02:39:00

Great car — very satisfied with the GLB 250 4MATIC.

How do you mainly use this car? (optional): Leisure / Weekend driver
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money

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BMW X6
Mercedes GLB

Costs and Consumption
Price
84,100 - 147,300 £
Price
43,200 - 62,400 £
Consumption L/100km
7.2 - 12.7 L/100km
Consumption L/100km
5.7 - 6.1 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
15.4 - 15.9 kWh/100km
Electric Range
-
Electric Range
431 - 631 km
Battery Capacity
-
Battery Capacity
-
co2
188 - 288 g/km
co2
0 - 138 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
SUV
Body Type
SUV
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
2,240 - 2,445 kg
Curb weight
1,840 - 2,280 kg
Trunk capacity
580 L
Trunk capacity
540 L
Length
-
Length
-
Width
2,004 - 2,019 mm
Width
1,861 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
595 - 695 kg
Payload
485 - 505 kg

Engine and Performance
Engine Type
Petrol MHEV, Diesel MHEV
Engine Type
Electric, Full Hybrid
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Automatic Gearbox
Transmission Detail
Reduction Gearbox
Drive Type
All-Wheel Drive
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Power HP
298 - 625 HP
Power HP
156 - 354 HP
Acceleration 0-100km/h
3.9 - 6.1 s
Acceleration 0-100km/h
5.5 - 9.7 s
Max Speed
-
Max Speed
-
Torque
540 - 750 Nm
Torque
280 - 515 Nm
Number of Cylinders
6 - 8
Number of Cylinders
4
Power kW
219 - 460 kW
Power kW
115 - 260 kW
Engine capacity
2,993 - 4,395 cm3
Engine capacity
1,499 cm3

General
Model Year
2025
Model Year
2026
CO2 Efficiency Class
G
CO2 Efficiency Class
A, D, E
Brand
BMW
Brand
Mercedes-Benz
What drivetrain options does the BMW X6 have?

The BMW X6 is available as All-Wheel Drive.

DriveDuel uses data analysis and artificial intelligence to evaluate vehicle data and create content. Content is regularly reviewed and improved. The displayed prices are estimates based on German list prices, adjusted to the respective country’s VAT. Country-specific registration taxes are not included. This information is not legally binding.