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Mercedes B Class vs McLaren GT Series comparison

Compare performance (238 HP vs 635 HP), boot space and price (33,100 £ vs 175,700 £ ) at a glance. Find out which car is the better choice for you – Mercedes B Class or McLaren GT Series?

Mercedes B Class vs McLaren GT Series: Key differences

Mercedes B Class

4.9 (5 Reviews)
rate
  • considerably cheaper
  • substantially more efficient
  • barely lighter
  • only slightly more trunk space
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McLaren GT Series

  • significantly more power
  • significantly quicker 0–100 km/h
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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

B Class

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 B Class is considerably cheaper – starting at 33,100 £ , while the McLaren GT Series costs 175,700 £ . That’s a price difference of around 142,585 £.

Fuel consumption also shows a difference: the Mercedes B Class uses 5.1 L/100km and is substantially more efficient than the McLaren GT Series with 11.9 L/100km. The difference is about 6.8 L/100km.

GT Series

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 238 HP. That’s roughly 397 HP more horsepower.

When accelerating from 0 to 100 km/h, the McLaren GT Series is significantly quicker – completing the sprint in 3.2 s, while the Mercedes B Class takes 6.5 s. That’s about 3.3 s quicker.

There’s also a difference in torque: the McLaren GT Series delivers markedly more torque with 630 Nm compared to 400 Nm. That’s about 230 Nm more.

B Class

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 B Class offers more seats – 5 vs 2.

In terms of curb weight, Mercedes B Class is barely lighter – 1,405 kg compared to 1,520 kg. The difference is around 115 kg.

Looking at boot space, the Mercedes B Class offers only slightly more boot space – 455 L compared to 420 L. That’s a difference of about 35 L.

Who wins the race in the data check?

The Mercedes B Class stands well ahead of its rival 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 £33,100
B Class

Mercedes B Class

  • Engine Type Petrol MHEV, Diesel
  • Transmission Automatic
  • Drive Type Front-Wheel Drive, All-Wheel Drive
  • Power HP 116 - 238 HP
  • Consumption L/100km 5.1 - 6.9 L/100km
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Frequently compared as well

Mercedes B Class
Mercedes GLA
VS
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Mercedes A Class
Mercedes B Class
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Mercedes B Class
McLaren GT Series

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Mercedes B Class

The Mercedes B-Class is a smart, grown-up compact people carrier that dresses everyday practicality in a near‑premium polish, perfect for buyers who want comfort and a classy badge without the theatrics. It won’t set your pulse racing on a back road, but it will make school runs, commutes and grocery hauls feel pleasantly civilized — a reliable, slightly posh companion for real life.

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Reviews Mercedes B Class

4.9 (5 Reviews)
rate
Peter
5 Mar 2026, 05:51:19

My wife and I have been driving a Mercedes W247 200d for seven years now, with 93,000 km on the clock. The car is very comfortable even on long trips and economical. At the last service the pads of the electric parking brake were replaced; otherwise no repairs. We love this car.

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

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

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Mercedes B Class
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Mercedes B Class
McLaren GT Series

Costs and Consumption
Price
33,100 - 52,500 £
Price
175,700 £
Consumption L/100km
5.1 - 6.9 L/100km
Consumption L/100km
11.9 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
133 - 156 g/km
co2
270 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
MPV
Body Type
Coupe
Seats
5
Seats
2
Doors
-
Doors
-
Curb weight
1,405 - 1,565 kg
Curb weight
1,520 kg
Trunk capacity
445 - 455 L
Trunk capacity
420 L
Length
-
Length
-
Width
1,796 mm
Width
2,045 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
515 - 550 kg
Payload
-

Engine and Performance
Engine Type
Petrol MHEV, Diesel
Engine Type
Petrol
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Dual-Clutch Automatic
Transmission Detail
Dual-Clutch Automatic
Drive Type
Front-Wheel Drive, All-Wheel Drive
Drive Type
Rear-Wheel Drive
Power HP
116 - 238 HP
Power HP
635 HP
Acceleration 0-100km/h
6.5 - 10 s
Acceleration 0-100km/h
3.2 s
Max Speed
-
Max Speed
-
Torque
200 - 400 Nm
Torque
630 Nm
Number of Cylinders
4
Number of Cylinders
8
Power kW
85 - 175 kW
Power kW
467 kW
Engine capacity
1,332 - 1,991 cm3
Engine capacity
3,994 cm3

General
Model Year
2025
Model Year
2023
CO2 Efficiency Class
D, E, F
CO2 Efficiency Class
G
Brand
Mercedes-Benz
Brand
McLaren
What drivetrain options does the Mercedes B Class have?

Available configurations include Front-Wheel Drive or 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.