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McLaren GT Series vs Mercedes GLB comparison

Compare performance (635 HP vs 354 HP), boot space and price (175,700 £ vs 43,200 £ ) at a glance. Find out which car is the better choice for you – McLaren GT Series or Mercedes GLB?

McLaren GT Series vs Mercedes GLB: Key differences

McLaren GT Series

  • significantly more power
  • clearly quicker 0–100 km/h
  • visibly lighter
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Mercedes GLB

3.6 (4 Reviews)
rate
  • substantially cheaper
  • clearly more efficient
  • noticeably more trunk space
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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

GT Series

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 substantially cheaper – starting at 43,200 £ , while the McLaren GT Series costs 175,700 £ . That’s a price difference of around 132,517 £.

Fuel consumption also shows a difference: the Mercedes GLB uses 5.7 L/100km and is clearly more efficient than the McLaren GT Series with 11.9 L/100km. The difference is about 6.2 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 McLaren GT Series offers significantly more power – delivering 635 HP compared to 354 HP. That’s roughly 281 HP more horsepower.

When accelerating from 0 to 100 km/h, the McLaren GT Series is clearly quicker – completing the sprint in 3.2 s, while the Mercedes GLB takes 5.5 s. That’s about 2.3 s quicker.

There’s also a difference in torque: the McLaren GT Series delivers somewhat more torque with 630 Nm compared to 515 Nm. That’s about 115 Nm more.

Space and Everyday Use:

Cabin size, boot volume and payload all play a role in everyday practicality. Here, comfort and flexibility make the difference.

Seats: Mercedes GLB offers more seats – 5 vs 2.

In terms of curb weight, McLaren GT Series is visibly lighter – 1,520 kg compared to 1,840 kg. The difference is around 320 kg.

Looking at boot space, the Mercedes GLB offers noticeably more boot space – 540 L compared to 420 L. That’s a difference of about 120 L.

Who wins the race in the data check?

The Mercedes GLB is far ahead overall 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
GLB

Mercedes GLB

  • Engine Type Electric, Full Hybrid
  • Transmission Automatic
  • Drive Type Rear-Wheel Drive, All-Wheel Drive
  • Power HP 156 - 354 HP
  • Consumption L/100km 5.7 - 6.1 L/100km
  • Consumption kWh/100km 15.4 - 15.9 kWh/100km
  • Electric Range 431 - 631 km
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Frequently compared as well

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Mercedes GLB
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McLaren GT Series
Mercedes GLB

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

McLaren GT Series

The McLaren GT takes the supercar blueprint and stretches it into a grand tourer, marrying thrilling pace with genuine long-distance comfort and a cabin that’s actually liveable. If you crave weekend escape capability without surrendering driver engagement, this is the car to consider — though it does attract a fair share of admiring glances.

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Reviews McLaren GT Series

No reviews yet. Share your experience and help others decide.

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
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Technology & Infotainment
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Practicality / Trunk & Everyday Use
Value for Money

Frequently compared as well

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Mercedes GLB
Skoda Kodiaq
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The Mercedes GLB dresses up compact practicality in a premium suit, with crisp tech and city-friendly manners, while the Skoda Kodiaq goes full-on family hauler, offering cavernous space and sensible value. Choose the GLB for style and badge appeal; pick the Kodiaq if you need seats, luggage and a …
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Volvo XC60
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VW Tiguan
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Mercedes GLC EQ
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McLaren GT Series
Mercedes GLB

Costs and Consumption
Price
175,700 £
Price
43,200 - 62,400 £
Consumption L/100km
11.9 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
270 g/km
co2
0 - 138 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Coupe
Body Type
SUV
Seats
2
Seats
5
Doors
-
Doors
-
Curb weight
1,520 kg
Curb weight
1,840 - 2,280 kg
Trunk capacity
420 L
Trunk capacity
540 L
Length
-
Length
-
Width
2,045 mm
Width
1,861 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
-
Payload
485 - 505 kg

Engine and Performance
Engine Type
Petrol
Engine Type
Electric, Full Hybrid
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Dual-Clutch Automatic
Transmission Detail
Reduction Gearbox
Drive Type
Rear-Wheel Drive
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Power HP
635 HP
Power HP
156 - 354 HP
Acceleration 0-100km/h
3.2 s
Acceleration 0-100km/h
5.5 - 9.7 s
Max Speed
-
Max Speed
-
Torque
630 Nm
Torque
280 - 515 Nm
Number of Cylinders
8
Number of Cylinders
4
Power kW
467 kW
Power kW
115 - 260 kW
Engine capacity
3,994 cm3
Engine capacity
1,499 cm3

General
Model Year
2023
Model Year
2026
CO2 Efficiency Class
G
CO2 Efficiency Class
A, D, E
Brand
McLaren
Brand
Mercedes-Benz
What drivetrain options does the McLaren GT Series have?

Available configurations include Rear-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.