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BMW XM vs Mercedes SL Class comparison

Compare performance (748 HP vs 816 HP), boot space and price (116,100 £ vs 112,700 £ ) at a glance. Find out which car is the better choice for you – BMW XM or Mercedes SL Class?

BMW XM vs Mercedes SL Class: Key differences

BMW XM

4.7 (1 Reviews)
rate
  • substantially more efficient
  • clearly more electric range
  • clearly more trunk space
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Mercedes SL Class

  • barely cheaper
  • only slightly more power
  • visibly quicker 0–100 km/h
  • significantly lighter
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Here’s where it gets real: The technical differences in detail

XM

Costs and Efficiency:

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

Mercedes SL Class is barely cheaper – starting at 112,700 £ , while the BMW XM costs 116,100 £ . That’s a price difference of around 3,438 £.

Fuel consumption also shows a difference: the BMW XM uses 4.7 L/100km and is substantially more efficient than the Mercedes SL Class with 9 L/100km. The difference is about 4.3 L/100km.

As for electric range, the BMW XM offers clearly more range – reaching up to 80 km, about 68 km more than the Mercedes SL Class.

SL 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 SL Class offers only slightly more power – delivering 816 HP compared to 748 HP. That’s roughly 68 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes SL Class is visibly quicker – completing the sprint in 2.9 s, while the BMW XM takes 3.8 s. That’s about 0.9 s quicker.

There’s also a difference in torque: the Mercedes SL Class delivers markedly more torque with 1,420 Nm compared to 1,000 Nm. That’s about 420 Nm more.

XM

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 XM offers more seats – 7 vs 4.

In terms of curb weight, Mercedes SL Class is significantly lighter – 1,810 kg compared to 2,695 kg. The difference is around 885 kg.

Looking at boot space, the BMW XM offers clearly more boot space – 527 L compared to 240 L. That’s a difference of about 287 L.

When it comes to payload, the BMW XM carries clearly more – 525 kg compared to 375 kg. That’s a difference of about 150 kg.

Who wins the race in the data check?

The BMW XM 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.

from £116,100
XM

BMW XM

  • Engine Type Plug-in 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 SL Class

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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Reviews BMW XM

4.7 (1 Reviews)
rate

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

Mercedes SL Class

The Mercedes SL blends timeless elegance with a cheeky sense of occasion, its retractable roof turning any commute into a small celebratory parade. Behind the wheel it behaves like a grown-up sports car that prefers comfort and presence over headline-grabbing bravado, making it a tempting choice for buyers who want to arrive in style.

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15C1119_012
15C1119_029
15C1119_120
15C1119_004

Reviews Mercedes SL Class

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

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BMW XM
Mercedes SL Class

Costs and Consumption
Price
116,100 - 159,300 £
Price
112,700 - 219,300 £
Consumption L/100km
4.7 - 5.3 L/100km
Consumption L/100km
9 - 13.6 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
78 - 80 km
Electric Range
12 km
Battery Capacity
-
Battery Capacity
-
co2
105 - 119 g/km
co2
206 - 309 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
SUV
Body Type
Roadster
Seats
7
Seats
4
Doors
-
Doors
-
Curb weight
2,695 - 2,795 kg
Curb weight
1,810 - 2,195 kg
Trunk capacity
527 L
Trunk capacity
110 - 240 L
Length
-
Length
-
Width
2,005 mm
Width
1,915 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
505 - 525 kg
Payload
145 - 375 kg

Engine and Performance
Engine Type
Plug-in Hybrid
Engine Type
Petrol MHEV, Petrol, Plug-in Hybrid
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Automatic Gearbox
Transmission Detail
Automatic Gearbox
Drive Type
All-Wheel Drive
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Power HP
476 - 748 HP
Power HP
435 - 816 HP
Acceleration 0-100km/h
3.8 - 5.1 s
Acceleration 0-100km/h
2.9 - 4.7 s
Max Speed
-
Max Speed
-
Torque
700 - 1,000 Nm
Torque
500 - 1,420 Nm
Number of Cylinders
6 - 8
Number of Cylinders
4 - 8
Power kW
350 - 550 kW
Power kW
320 - 600 kW
Engine capacity
2,998 - 4,395 cm3
Engine capacity
1,991 - 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.