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BMW XM vs Mercedes GLS comparison

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

BMW XM vs Mercedes GLS: Key differences

BMW XM

  • considerably cheaper
  • slightly more power
  • substantially more efficient
  • slightly quicker 0–100 km/h
  • barely lighter
  • visibly more trunk space
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Mercedes GLS

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By Achim Sedelmaier

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

XM

Costs and Efficiency:

When it comes to price and running costs, the biggest differences usually appear. This is often where you see which car fits your budget better in the long run.

BMW XM is considerably 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 substantially more efficient than the Mercedes GLS with 13.3 L/100km. The difference is about 8.6 L/100km.

GLS

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 slightly 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.

XM

Space and Everyday Use:

Whether family car or daily driver – which one offers more room, flexibility and comfort?

Both vehicles offer seating for 7 people.

In terms of curb weight, BMW XM is barely 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 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 £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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BMW XM
Mercedes GLS

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

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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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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BMW XM
Mercedes GLS

Costs and Consumption
Price
116,100 - 159,300 £
Price
191,300 £
Consumption L/100km
4.7 - 5.3 L/100km
Consumption L/100km
13.3 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
78 - 80 km
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
105 - 119 g/km
co2
302 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
2,695 - 2,795 kg
Curb weight
2,700 kg
Trunk capacity
527 L
Trunk capacity
355 L
Length
-
Length
-
Width
2,005 mm
Width
1,956 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
505 - 525 kg
Payload
695 kg

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

General
Model Year
2026
Model Year
2025
CO2 Efficiency Class
C, D
CO2 Efficiency Class
G
Brand
BMW
Brand
Mercedes-Benz
What drive types are available for the BMW XM?

Available configurations include 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.