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BMW Z4 vs Mercedes GLB comparison
Compare performance (340 HP vs 354 HP), boot space and price (43,500 £ vs 43,200 £ ) at a glance. Find out which car is the better choice for you – BMW Z4 or Mercedes GLB?
BMW Z4 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.
Z4
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 barely cheaper – starting at 43,200 £ , while the BMW Z4 costs 43,500 £ . That’s a price difference of around 260 £.
Fuel consumption also shows a difference: the Mercedes GLB uses 5.7 L/100km and is clearly more efficient than the BMW Z4 with 6.9 L/100km. The difference is about 1.2 L/100km.
GLB
Engine and Performance:
Under the bonnet, it becomes clear which model is tuned for sportiness and which one takes the lead when you hit the accelerator.
When it comes to engine power, the Mercedes GLB offers barely more power – delivering 354 HP compared to 340 HP. That’s roughly 14 HP more horsepower.
When accelerating from 0 to 100 km/h, the BMW Z4 is clearly quicker – completing the sprint in 4.5 s, while the Mercedes GLB takes 5.5 s. That’s about 1 s quicker.
There’s also a difference in torque: the Mercedes GLB delivers barely more torque with 515 Nm compared to 500 Nm. That’s about 15 Nm more.
Z4
Space and Everyday Use:
Beyond pure performance, interior space and usability matter most in daily life. This is where you see which car is more practical and versatile.
Seats: Mercedes GLB offers more seats – 5 vs 2.
In terms of curb weight, BMW Z4 is clearly lighter – 1,510 kg compared to 1,840 kg. The difference is around 330 kg.
Looking at boot space, the Mercedes GLB offers clearly more boot space – 540 L compared to 281 L. That’s a difference of about 259 L.
When it comes to payload, the Mercedes GLB carries substantially more – 505 kg compared to 235 kg. That’s a difference of about 270 kg.
Who wins the race in the data check?
The Mercedes GLB 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 £43,200
Mercedes GLB
BMW Z4
Mercedes GLB
Costs and Consumption
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Engine and Performance
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Dimensions and Body
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BMW Z4
The BMW Z4 is a taut, road-hugging roadster that pairs elegant, low-slung styling with a roof you can drop on a sunny whim, delivering that pure, wind-in-your-hair driving thrill few cars manage to match. It’s an ideal weekend companion for drivers who prefer engagement over practicality — bring good shoes rather than a lot of luggage, and you’ll get a grin every time you turn the wheel.
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 Z4
Mercedes GLB
Costs and Consumption |
|
|---|---|
|
Price
43,500 - 65,300 £
|
Price
43,200 - 62,400 £
|
|
Consumption L/100km
6.9 - 8.5 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
157 - 191 g/km
|
co2
0 - 138 g/km
|
|
Fuel tank capacity
-
|
Fuel tank capacity
-
|
Dimensions and Body |
|
|---|---|
|
Body Type
Roadster
|
Body Type
SUV
|
|
Seats
2
|
Seats
5
|
|
Doors
-
|
Doors
-
|
|
Curb weight
1,510 - 1,640 kg
|
Curb weight
1,840 - 2,280 kg
|
|
Trunk capacity
281 L
|
Trunk capacity
540 L
|
|
Length
-
|
Length
-
|
|
Width
1,864 mm
|
Width
1,861 mm
|
|
Height
-
|
Height
-
|
|
Max trunk capacity
-
|
Max trunk capacity
-
|
|
Payload
215 - 235 kg
|
Payload
485 - 505 kg
|
Engine and Performance |
|
|---|---|
|
Engine Type
Petrol
|
Engine Type
Electric, Full Hybrid
|
|
Transmission
Manuel, Automatic
|
Transmission
Automatic
|
|
Transmission Detail
Manual Gearbox, Automatic Gearbox
|
Transmission Detail
Reduction Gearbox
|
|
Drive Type
Rear-Wheel Drive
|
Drive Type
Rear-Wheel Drive, All-Wheel Drive
|
|
Power HP
197 - 340 HP
|
Power HP
156 - 354 HP
|
|
Acceleration 0-100km/h
4.5 - 6.8 s
|
Acceleration 0-100km/h
5.5 - 9.7 s
|
|
Max Speed
-
|
Max Speed
-
|
|
Torque
320 - 500 Nm
|
Torque
280 - 515 Nm
|
|
Number of Cylinders
4 - 6
|
Number of Cylinders
4
|
|
Power kW
145 - 250 kW
|
Power kW
115 - 260 kW
|
|
Engine capacity
1,998 - 2,998 cm3
|
Engine capacity
1,499 cm3
|
General |
|
|---|---|
|
Model Year
2,025 - 2,026
|
Model Year
2026
|
|
CO2 Efficiency Class
F, G
|
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.