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BMW iX vs Mercedes GLB comparison
Compare performance (659 HP vs 354 HP), boot space and price (71,600 £ vs 43,200 £ ) at a glance. Find out which car is the better choice for you – BMW iX or Mercedes GLB?
BMW iX vs Mercedes GLB: Key differences
All details on performance, efficiency, range and trunk space can be found in the technical comparison below – including user reviews for both models.
iX
Costs and Efficiency:
Price and efficiency are key factors when choosing a car – and this is often where the real differences emerge.
Mercedes GLB is considerably cheaper – starting at 43,200 £ , while the BMW iX costs 71,600 £ . That’s a price difference of around 28,374 £.
In terms of energy consumption, the Mercedes GLB is slightly more efficient: consuming 15.4 kWh/100km compared to 17.8 kWh/100km for the BMW iX. That’s a difference of about 2.4 kWh/100km.
As for electric range, the BMW iX offers barely more range – reaching up to 701 km, about 70 km more than the Mercedes GLB.
GLB
Engine and Performance:
Power, torque and acceleration are the classic benchmarks for car enthusiasts – and here, some clear differences start to show.
When it comes to engine power, the BMW iX offers clearly more power – delivering 659 HP compared to 354 HP. That’s roughly 305 HP more horsepower.
When accelerating from 0 to 100 km/h, the BMW iX is clearly quicker – completing the sprint in 3.8 s, while the Mercedes GLB takes 5.5 s. That’s about 1.7 s quicker.
There’s also a difference in torque: the BMW iX delivers considerably more torque with 1,015 Nm compared to 515 Nm. That’s about 500 Nm more.
iX
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 noticeably lighter – 1,840 kg compared to 2,525 kg. The difference is around 685 kg.
Looking at boot space, the Mercedes GLB offers very slightly more boot space – 540 L compared to 500 L. That’s a difference of about 40 L.
When it comes to payload, the BMW iX carries slightly more – 575 kg compared to 505 kg. That’s a difference of about 70 kg.
Who wins the race in the data check?
The BMW iX 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 £71,600
BMW iX
BMW iX
Mercedes GLB
Costs and Consumption
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Engine and Performance
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Dimensions and Body
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BMW iX
The BMW iX arrives like a tech-rich luxury SUV that refuses to shout, offering a serene yet authoritative road presence that suits both city commutes and long-distance cruising. Inside, its minimalist cabin wraps high-quality materials and clever interfaces around a driver-focused layout, making it feel more like a forward-thinking lounge than just another electric appliance — and yes, it still delivers the dynamic driving character you'd expect from a BMW.
details
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.
details
BMW iX
Mercedes GLB
Costs and Consumption |
|
|---|---|
|
Price
71,600 - 108,400 £
|
Price
43,200 - 62,400 £
|
|
Consumption L/100km
-
|
Consumption L/100km
5.7 - 6.1 L/100km
|
|
Consumption kWh/100km
17.8 - 20.6 kWh/100km
|
Consumption kWh/100km
15.4 - 15.9 kWh/100km
|
|
Electric Range
600 - 701 km
|
Electric Range
431 - 631 km
|
|
Battery Capacity
-
|
Battery Capacity
-
|
|
co2
0 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
2,525 - 2,655 kg
|
Curb weight
1,840 - 2,280 kg
|
|
Trunk capacity
500 L
|
Trunk capacity
540 L
|
|
Length
-
|
Length
-
|
|
Width
1,970 mm
|
Width
1,861 mm
|
|
Height
-
|
Height
-
|
|
Max trunk capacity
-
|
Max trunk capacity
-
|
|
Payload
505 - 575 kg
|
Payload
485 - 505 kg
|
Engine and Performance |
|
|---|---|
|
Engine Type
Electric
|
Engine Type
Electric, Full Hybrid
|
|
Transmission
Automatic
|
Transmission
Automatic
|
|
Transmission Detail
Reduction Gearbox
|
Transmission Detail
Reduction Gearbox
|
|
Drive Type
All-Wheel Drive
|
Drive Type
Rear-Wheel Drive, All-Wheel Drive
|
|
Power HP
408 - 659 HP
|
Power HP
156 - 354 HP
|
|
Acceleration 0-100km/h
3.8 - 5.1 s
|
Acceleration 0-100km/h
5.5 - 9.7 s
|
|
Max Speed
-
|
Max Speed
-
|
|
Torque
700 - 1,015 Nm
|
Torque
280 - 515 Nm
|
|
Number of Cylinders
-
|
Number of Cylinders
4
|
|
Power kW
300 - 485 kW
|
Power kW
115 - 260 kW
|
|
Engine capacity
-
|
Engine capacity
1,499 cm3
|
General |
|
|---|---|
|
Model Year
2025
|
Model Year
2026
|
|
CO2 Efficiency Class
A
|
CO2 Efficiency Class
A, D, E
|
|
Brand
BMW
|
Brand
Mercedes-Benz
|
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.