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BMW X5 vs Mercedes S-Class comparison

Compare performance (625 HP vs 635 HP), boot space and price (77,600 £ vs 104,000 £ ) at a glance. Find out which car is the better choice for you – BMW X5 or Mercedes S-Class?

BMW X5 vs Mercedes S-Class: Key differences

BMW X5

3.6 (1 Reviews)
rate
  • markedly cheaper
  • marginally quicker 0–100 km/h
  • somewhat more trunk space
details

Mercedes S-Class

  • only slightly more power
  • visibly more efficient
  • moderately more electric range
  • very slightly lighter
details

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

X5

Costs and Efficiency:

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

BMW X5 is markedly cheaper – starting at 77,600 £ , while the Mercedes S-Class costs 104,000 £ . That’s a price difference of around 26,448 £.

Fuel consumption also shows a difference: the Mercedes S-Class uses 2.2 L/100km and is visibly more efficient than the BMW X5 with 3 L/100km. The difference is about 0.8 L/100km.

As for electric range, the Mercedes S-Class offers moderately more range – reaching up to 118 km, about 13 km more than the BMW X5.

S-Class

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 S-Class offers only slightly more power – delivering 635 HP compared to 625 HP. That’s roughly 10 HP more horsepower.

When accelerating from 0 to 100 km/h, the BMW X5 is marginally quicker – completing the sprint in 3.9 s, while the Mercedes S-Class takes 4 s. That’s about 0.1 s quicker.

There’s also a difference in torque: the Mercedes S-Class delivers slightly more torque with 850 Nm compared to 750 Nm. That’s about 100 Nm more.

X5

Space and Everyday Use:

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

Both vehicles offer seating for 5 people.

In terms of curb weight, Mercedes S-Class is very slightly lighter – 2,165 kg compared to 2,240 kg. The difference is around 75 kg.

Looking at boot space, the BMW X5 offers somewhat more boot space – 650 L compared to 530 L. That’s a difference of about 120 L.

When it comes to payload, the BMW X5 carries barely more – 705 kg compared to 660 kg. That’s a difference of about 45 kg.

Who wins the race in the data check?

The Mercedes S-Class is slightly 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 £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 - 635 HP
  • Consumption L/100km 2.2 - 11 L/100km
  • Electric Range 98 - 118 km
details

Frequently compared as well

BMW iX3
BMW X5
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Mercedes S-Class

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

BMW X5

The BMW X5 blends athletic handling with a roomy, premium interior, feeling equally at home on twisty country roads and the school-run car park. Its executive-lounge cabin and confident road presence make it a tempting choice for buyers who want comfort, capability and just a little bit of bragging rights.

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Reviews BMW X5

3.6 (1 Reviews)
rate
Kazibwe Patrick
21 Apr 2026, 11:42:53

Very Good

How do you mainly use this car? (optional): Long-distance driver
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money

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.

details
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Reviews Mercedes S-Class

No reviews yet. Share your experience and help others decide.

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Mercedes S-Class

Costs and Consumption
Price
77,600 - 144,400 £
Price
104,000 - 201,400 £
Consumption L/100km
3 - 12.8 L/100km
Consumption L/100km
2.2 - 11 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
105 km
Electric Range
98 - 118 km
Battery Capacity
-
Battery Capacity
-
co2
68 - 289 g/km
co2
50 - 252 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
SUV
Body Type
Sedan
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
2,240 - 2,495 kg
Curb weight
2,165 - 2,650 kg
Trunk capacity
500 - 650 L
Trunk capacity
345 - 530 L
Length
-
Length
-
Width
2,004 - 2,015 mm
Width
1,921 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
565 - 705 kg
Payload
420 - 660 kg

Engine and Performance
Engine Type
Petrol MHEV, Diesel MHEV, Plugin Hybrid
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
298 - 625 HP
Power HP
336 - 635 HP
Acceleration 0-100km/h
3.9 - 6.1 s
Acceleration 0-100km/h
4 - 5.7 s
Max Speed
-
Max Speed
-
Torque
540 - 750 Nm
Torque
560 - 850 Nm
Number of Cylinders
6 - 8
Number of Cylinders
6 - 8
Power kW
219 - 460 kW
Power kW
247 - 467 kW
Engine capacity
2,993 - 4,395 cm3
Engine capacity
2,989 - 3,982 cm3

General
Model Year
2025
Model Year
2026
CO2 Efficiency Class
G, B
CO2 Efficiency Class
G, B, F
Brand
BMW
Brand
Mercedes-Benz
What drive types are available for the BMW X5?

The BMW X5 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.