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BMW 7 Series vs Mercedes GLS comparison

Compare performance (571 HP vs 634 HP), boot space and price (102,800 £ vs 191,300 £ ) at a glance. Find out which car is the better choice for you – BMW 7 Series or Mercedes GLS?

BMW 7 Series vs Mercedes GLS: Key differences

BMW 7 Series

  • substantially cheaper
  • significantly more efficient
  • slightly lighter
  • markedly more trunk space
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Mercedes GLS

  • only slightly more power
  • barely quicker 0–100 km/h
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By Achim Sedelmaier

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

7 Series

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.

BMW 7 Series is substantially cheaper – starting at 102,800 £ , while the Mercedes GLS costs 191,300 £ . That’s a price difference of around 88,489 £.

Fuel consumption also shows a difference: the BMW 7 Series uses 3.3 L/100km and is significantly more efficient than the Mercedes GLS with 13.3 L/100km. The difference is about 10 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 Mercedes GLS offers only slightly more power – delivering 634 HP compared to 571 HP. That’s roughly 63 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes GLS is barely quicker – completing the sprint in 4.2 s, while the BMW 7 Series takes 4.3 s. That’s about 0.1 s quicker.

There’s also a difference in torque: the Mercedes GLS delivers marginally more torque with 850 Nm compared to 800 Nm. That’s about 50 Nm more.

7 Series

Space and Everyday Use:

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

Seats: Mercedes GLS offers more seats – 7 vs 5.

In terms of curb weight, BMW 7 Series is slightly lighter – 2,255 kg compared to 2,700 kg. The difference is around 445 kg.

Looking at boot space, the BMW 7 Series offers markedly more boot space – 540 L compared to 355 L. That’s a difference of about 185 L.

When it comes to payload, the Mercedes GLS carries very slightly more – 695 kg compared to 665 kg. That’s a difference of about 30 kg.

Who wins the race in the data check?

The BMW 7 Series 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 £102,800
7 Series

BMW 7 Series

  • Engine Type : Diesel MHEV, Plugin Hybrid
  • Transmission : Automatic
  • Drive Type : All-Wheel Drive
  • Power HP : 300 - 571 HP
  • Consumption L/100km : 3.3 - 6.1 L/100km
  • Electric Range : 80 km
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Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

BMW 7 Series

The BMW 7 Series is a flagship that balances whisper-quiet luxury with a driver's focus, wrapping advanced tech and plush comfort in a sleek, authoritative presence. It’s the kind of car that navigates city traffic and open roads with equal poise, offering a grown-up alternative for buyers who demand refinement without losing a little driving fun.

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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 7 Series
Mercedes GLS

Costs and Consumption
Price
102,800 - 128,700 £
Price
191,300 £
Consumption L/100km
3.3 - 6.1 L/100km
Consumption L/100km
13.3 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
80 km
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
74 - 160 g/km
co2
302 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Sedan
Body Type
SUV
Seats
5
Seats
7
Doors
-
Doors
-
Curb weight
2,255 - 2,525 kg
Curb weight
2,700 kg
Trunk capacity
525 - 540 L
Trunk capacity
355 L
Length
-
Length
-
Width
1,950 mm
Width
1,956 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
605 - 665 kg
Payload
695 kg

Engine and Performance
Engine Type
Diesel MHEV, 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
300 - 571 HP
Power HP
634 HP
Acceleration 0-100km/h
4.3 - 5.8 s
Acceleration 0-100km/h
4.2 s
Max Speed
-
Max Speed
-
Torque
670 - 800 Nm
Torque
850 Nm
Number of Cylinders
6
Number of Cylinders
8
Power kW
220 - 420 kW
Power kW
466 kW
Engine capacity
2,993 - 2,998 cm3
Engine capacity
3,982 cm3

General
Model Year
2,024 - 2,025
Model Year
2025
CO2 Efficiency Class
F, B
CO2 Efficiency Class
G
Brand
BMW
Brand
Mercedes-Benz
What drive types are available for the BMW 7 Series?

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.