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Lexus RZ vs Mercedes GLB comparison
Compare performance (408 HP vs 354 HP), boot space and price (48,900 £ vs 43,200 £ ) at a glance. Find out which car is the better choice for you – Lexus RZ or Mercedes GLB?
Lexus RZ 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.
RZ
Costs and Efficiency:
Price and efficiency are often the first things buyers look at. Here it becomes clear which model has the long-term edge – whether at the pump, the plug, or in purchase price.
Mercedes GLB is somewhat cheaper – starting at 43,200 £ , while the Lexus RZ costs 48,900 £ . That’s a price difference of around 5,745 £.
In terms of energy consumption, the Lexus RZ is marginally more efficient: consuming 14.7 kWh/100km compared to 15.4 kWh/100km for the Mercedes GLB. That’s a difference of about 0.7 kWh/100km.
As for electric range, the Mercedes GLB offers moderately more range – reaching up to 631 km, about 72 km more than the Lexus RZ.
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 Lexus RZ offers slightly more power – delivering 408 HP compared to 354 HP. That’s roughly 54 HP more horsepower.
When accelerating from 0 to 100 km/h, the Lexus RZ is markedly quicker – completing the sprint in 4.4 s, while the Mercedes GLB takes 5.5 s. That’s about 1.1 s quicker.
There’s also a difference in torque: the Lexus RZ delivers very slightly more torque with 538 Nm compared to 515 Nm. That’s about 23 Nm more.
RZ
Space and Everyday Use:
Cabin size, boot volume and payload all play a role in everyday practicality. Here, comfort and flexibility make the difference.
Both vehicles offer seating for 5 people.
In terms of curb weight, Mercedes GLB is marginally lighter – 1,840 kg compared to 1,995 kg. The difference is around 155 kg.
When it comes to payload, the Lexus RZ carries only slightly more – 540 kg compared to 505 kg. That’s a difference of about 35 kg.
Who wins the race in the data check?
The Lexus RZ shows a few small advantages 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 £48,900
Lexus RZ
Lexus RZ
Mercedes GLB
Costs and Consumption
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Engine and Performance
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Dimensions and Body
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Lexus RZ
The Lexus RZ brings Lexus' trademark quiet luxury to the electric SUV world, wrapping poised handling and a plush, well-crafted cabin in a calm, composed package. It won't shout about raw figures — instead it trades headline numbers for smooth power delivery, fuss-free tech and an effortless refinement that will suit buyers who want electric convenience without losing the luxury experience.
details
Mercedes GLB
The Mercedes GLB is a practical compact SUV that mixes boxy, family-friendly space with premium German polish, making it an appealing choice for buyers who want usefulness without pretension. It drives with a confident, composed feel and somehow manages to look both rugged and refined — the grown-up SUV that still likes to have fun.
details
Lexus RZ
Mercedes GLB
Costs and Consumption |
|
|---|---|
|
Price
48,900 - 67,500 £
|
Price
43,200 - 62,400 £
|
|
Consumption L/100km
-
|
Consumption L/100km
5.7 - 6.1 L/100km
|
|
Consumption kWh/100km
14.7 - 18.1 kWh/100km
|
Consumption kWh/100km
15.4 - 15.9 kWh/100km
|
|
Electric Range
457 - 559 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
1,995 - 2,135 kg
|
Curb weight
1,840 - 2,280 kg
|
|
Trunk capacity
-
|
Trunk capacity
540 L
|
|
Length
-
|
Length
-
|
|
Width
1,895 mm
|
Width
1,861 mm
|
|
Height
-
|
Height
-
|
|
Max trunk capacity
-
|
Max trunk capacity
-
|
|
Payload
505 - 540 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
Front-Wheel Drive, All-Wheel Drive
|
Drive Type
Rear-Wheel Drive, All-Wheel Drive
|
|
Power HP
227 - 408 HP
|
Power HP
156 - 354 HP
|
|
Acceleration 0-100km/h
4.4 - 7.5 s
|
Acceleration 0-100km/h
5.5 - 9.7 s
|
|
Max Speed
-
|
Max Speed
-
|
|
Torque
269 - 538 Nm
|
Torque
280 - 515 Nm
|
|
Number of Cylinders
-
|
Number of Cylinders
4
|
|
Power kW
167 - 300 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
Lexus
|
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.