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Mercedes GLS vs BMW XM comparison

Compare performance (634 HP vs 748 HP), boot space and price (191,300 £ vs 116,100 £ ) at a glance. Find out which car is the better choice for you – Mercedes GLS or BMW XM?

Mercedes GLS vs BMW XM: Key differences

Mercedes GLS

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BMW XM

  • significantly cheaper
  • moderately more power
  • clearly more efficient
  • slightly quicker 0–100 km/h
  • marginally lighter
  • visibly more trunk space
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By Achim Sedelmaier

Here’s where it gets real: The technical differences in detail

GLS

Costs and Efficiency:

Price and efficiency are key factors when choosing a car – and this is often where the real differences emerge.

BMW XM is significantly cheaper – starting at 116,100 £ , while the Mercedes GLS costs 191,300 £ . That’s a price difference of around 75,118 £.

Fuel consumption also shows a difference: the BMW XM uses 4.7 L/100km and is clearly more efficient than the Mercedes GLS with 13.3 L/100km. The difference is about 8.6 L/100km.

XM

Engine and Performance:

Power, torque and acceleration say a lot about how a car feels on the road. This is where you see which model delivers more driving dynamics.

When it comes to engine power, the BMW XM offers moderately more power – delivering 748 HP compared to 634 HP. That’s roughly 114 HP more horsepower.

When accelerating from 0 to 100 km/h, the BMW XM is slightly quicker – completing the sprint in 3.8 s, while the Mercedes GLS takes 4.2 s. That’s about 0.4 s quicker.

There’s also a difference in torque: the BMW XM delivers slightly more torque with 1,000 Nm compared to 850 Nm. That’s about 150 Nm more.

GLS

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.

Both vehicles offer seating for 7 people.

In terms of curb weight, BMW XM is marginally lighter – 2,695 kg compared to 2,700 kg. The difference is around 5 kg.

Looking at boot space, the BMW XM offers visibly more boot space – 527 L compared to 355 L. That’s a difference of about 172 L.

When it comes to payload, the Mercedes GLS carries visibly more – 695 kg compared to 525 kg. That’s a difference of about 170 kg.

Who wins the race in the data check?

The BMW XM is decisively ahead 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 £116,100
XM

BMW XM

  • Engine Type : Plugin Hybrid
  • Transmission : Automatic
  • Drive Type : All-Wheel Drive
  • Power HP : 476 - 748 HP
  • Consumption L/100km : 4.7 - 5.3 L/100km
  • Electric Range : 78 - 80 km
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Costs and Consumption
View detailed analysis

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View detailed analysis

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View detailed analysis

Mercedes GLS

The GLS — usually just called the GLS — is Mercedes' flagship SUV, wrapping limousine-like comfort and commanding road presence into a smart, family-ready package. It pampers occupants with a hushed cabin, premium materials and intuitive tech, while still managing to feel confident and a little indulgent on the daily commute.

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Reviews Mercedes GLS

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BMW XM

The BMW XM is an unapologetically bold flagship that fuses brash, hyper-styled presence with the kind of luxury that commands attention wherever it goes. Inside it's a leather-clad showpiece loaded with modern tech and a driving personality that blends theatrical muscle with refined grand-tourer composure—ideal for buyers who want drama and comfort in equal measure.

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Reviews BMW XM

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Mercedes GLS
BMW XM

Costs and Consumption
Price
191,300 £
Price
116,100 - 159,300 £
Consumption L/100km
13.3 L/100km
Consumption L/100km
4.7 - 5.3 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
78 - 80 km
Battery Capacity
-
Battery Capacity
-
co2
302 g/km
co2
105 - 119 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
SUV
Body Type
SUV
Seats
7
Seats
7
Doors
-
Doors
-
Curb weight
2,700 kg
Curb weight
2,695 - 2,795 kg
Trunk capacity
355 L
Trunk capacity
527 L
Length
-
Length
-
Width
1,956 mm
Width
2,005 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
695 kg
Payload
505 - 525 kg

Engine and Performance
Engine Type
Petrol MHEV
Engine Type
Plugin Hybrid
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Automatic Gearbox
Transmission Detail
Automatic Gearbox
Drive Type
All-Wheel Drive
Drive Type
All-Wheel Drive
Power HP
634 HP
Power HP
476 - 748 HP
Acceleration 0-100km/h
4.2 s
Acceleration 0-100km/h
3.8 - 5.1 s
Max Speed
-
Max Speed
-
Torque
850 Nm
Torque
700 - 1,000 Nm
Number of Cylinders
8
Number of Cylinders
6 - 8
Power kW
466 kW
Power kW
350 - 550 kW
Engine capacity
3,982 cm3
Engine capacity
2,998 - 4,395 cm3

General
Model Year
2025
Model Year
2026
CO2 Efficiency Class
G
CO2 Efficiency Class
C, D
Brand
Mercedes-Benz
Brand
BMW
Is the Mercedes GLS offered with different drivetrains?

The Mercedes GLS is available as 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.