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BMW X7 vs Mercedes S Class comparison

Compare performance (530 HP vs 585 HP), boot space and price (90800 £ vs 104000 £ ) at a glance. Find out which car is the better choice for you – BMW X7 or Mercedes S Class?

BMW X7 vs Mercedes S Class: Key differences

BMW X7

5 (1 Reviews)
rate
  • somewhat cheaper

Mercedes S Class

  • barely noticeable more power
  • decisively more efficient
  • a bit quicker from 0–100 km/h
  • to a small extent lighter

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

X7

Costs and Efficiency:

Looking at overall running costs, both models reveal some interesting differences in everyday economy.

BMW X7 has a somewhat advantage in terms of price – it starts at 90800 £ , while the Mercedes S Class costs 104000 £ . That’s a price difference of around 13248 £.

Fuel consumption also shows a difference: Mercedes S Class manages with 2.20 L and is therefore decisively more efficient than the BMW X7 with 8 L. The difference is about 5.80 L per 100 km.

S Class

Engine and Performance:

Power, torque and acceleration are the classic benchmarks for car enthusiasts – and here, some clear differences start to show.

When it comes to engine power, the Mercedes S Class has a barely noticeable edge – offering 585 HP compared to 530 HP. That’s roughly 55 HP more horsepower.

In acceleration from 0 to 100 km/h, the Mercedes S Class is a bit quicker – completing the sprint in 4 s, while the BMW X7 takes 4.70 s. That’s about 0.70 s faster.

Both models offer the same torque – 750 Nm.

X7

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.

Seats: BMW X7 offers evident more seating capacity – 7 vs 5.

In curb weight, Mercedes S Class is to a small extent lighter – 2165 kg compared to 2490 kg. The difference is around 325 kg.

When it comes to payload, BMW X7 a bit takes the win – 760 kg compared to 660 kg. That’s a difference of about 100 kg.

Who wins the race in the data check?

The Mercedes S Class 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.

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BMW X7
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BMW X7
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BMW X7
Mercedes S Class

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis
from about £104,000
S Class

Mercedes S Class

  • Engine Type : Petrol MHEV, Plugin Hybrid, Diesel MHEV
  • Transmission : Automatic
  • Drive Type : All-Wheel Drive, Rear-Wheel Drive
  • Power HP : 336 - 585 HP
  • Consumption L/100km : 2.2 - 10.6 L
  • Electric Range : 102 - 118 km
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BMW X7

5 (1 Reviews)
rate

The BMW X7 sits at the top of BMW’s SUV range, wrapping executive-level luxury and a cavernous cabin in a bold, road-commanding package. It’s ideal for buyers who want first-class comfort and presence on the road — think chauffeur-level refinement without hiring one, though you’ll need a confident approach to parking.

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Mercedes S Class

The Mercedes S-Class wraps peerless comfort, whisper-quiet luxury and subtle tech wizardry into a chauffeur-ready package that still knows how to engage the driver. It’s the car for buyers who want to arrive relaxed, be taken seriously and occasionally enjoy a grin when the road reminds them this limousine can dance.

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Reviews BMW X7

5 (1 Reviews)
rate

Reviews Mercedes S Class

BMW X7
Mercedes S Class

Costs and Consumption
Price
90800 - 117500 £
Price
104000 - 139100 £
Consumption L/100km
8 - 12.1 L
Consumption L/100km
2.2 - 10.6 L
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
102 - 118 km
Battery Capacity
-
Battery Capacity
-
co2
210 - 274 g/km
co2
50 - 241 g/km
Fuel tank capacity
80 - 83 L
Fuel tank capacity
-

Dimensions and Body
Body Type
SUV
Body Type
Sedan
Seats
7
Seats
5
Doors
5
Doors
-
Curb weight
2490 - 2675 kg
Curb weight
2165 - 2515 kg
Trunk capacity
750 L
Trunk capacity
-
Length
5181 mm
Length
-
Width
2000 mm
Width
1921 mm
Height
1835 mm
Height
-
Max trunk capacity
2120 L
Max trunk capacity
-
Payload
680 - 760 kg
Payload
555 - 660 kg

Engine and Performance
Engine Type
Petrol MHEV, Diesel MHEV
Engine Type
Petrol MHEV, Plugin Hybrid, Diesel MHEV
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Automatic Gearbox
Transmission Detail
Automatic Gearbox
Drive Type
All-Wheel Drive
Drive Type
All-Wheel Drive, Rear-Wheel Drive
Power HP
352 - 530 HP
Power HP
336 - 585 HP
Acceleration 0-100km/h
4.7 - 5.9 s
Acceleration 0-100km/h
4 - 5.7 s
Max Speed
245 - 250 km/h
Max Speed
-
Torque
520 - 750 Nm
Torque
560 - 750 Nm
Number of Cylinders
6 - 8
Number of Cylinders
6 - 8
Power kW
259 - 390 kW
Power kW
247 - 430 kW
Engine capacity
2993 - 4395 cm3
Engine capacity
2989 - 3982 cm3

General
Model Year
2025
Model Year
2026
CO2 Efficiency Class
G
CO2 Efficiency Class
G, B, F
Brand
BMW
Brand
Mercedes-Benz

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What drivetrain options does the BMW X7 have?

The BMW X7 is available as All-Wheel Drive.

The prices shown are estimates based on German list prices, adjusted for local VAT. Local registration taxes (e.g. NoVA, BPM or CO2 malus) are not included. This information is not legally binding.