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BMW iX3 vs Mercedes SL Class comparison

Compare performance (469 HP vs 816 HP), boot space and price (54,300 £ vs 112,700 £ ) at a glance. Find out which car is the better choice for you – BMW iX3 or Mercedes SL Class?

BMW iX3 vs Mercedes SL Class: Key differences

BMW iX3

4.6 (4 Reviews)
rate
  • considerably cheaper
  • significantly more electric range
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Mercedes SL Class

  • significantly more power
  • clearly quicker 0–100 km/h
  • clearly lighter
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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

iX3

Costs and Efficiency:

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

BMW iX3 is considerably cheaper – starting at 54,300 £ , while the Mercedes SL Class costs 112,700 £ . That’s a price difference of around 58,362 £.

As for electric range, the BMW iX3 offers significantly more range – reaching up to 805 km, about 793 km more than the Mercedes SL Class.

SL Class

Engine and Performance:

Under the bonnet, it becomes clear which model is tuned for sportiness and which one takes the lead when you hit the accelerator.

When it comes to engine power, the Mercedes SL Class offers significantly more power – delivering 816 HP compared to 469 HP. That’s roughly 347 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes SL Class is clearly quicker – completing the sprint in 2.9 s, while the BMW iX3 takes 4.9 s. That’s about 2 s quicker.

There’s also a difference in torque: the Mercedes SL Class delivers substantially more torque with 1,420 Nm compared to 645 Nm. That’s about 775 Nm more.

iX3

Space and Everyday Use:

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

Seats: BMW iX3 offers more seats – 5 vs 4.

In terms of curb weight, Mercedes SL Class is clearly lighter – 1,810 kg compared to 2,360 kg. The difference is around 550 kg.

When it comes to payload, the BMW iX3 carries a bit more – 465 kg compared to 375 kg. That’s a difference of about 90 kg.

Who wins the race in the data check?

The BMW iX3 stands well ahead of its rival 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 £54,300
iX3

BMW iX3

  • Engine Type Electric
  • Transmission Automatic
  • Drive Type All-Wheel Drive, Rear-Wheel Drive
  • Power HP 320 - 469 HP
  • Consumption kWh/100km 14.6 - 15.1 kWh/100km
  • Electric Range 635 - 805 km
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Frequently compared as well

BMW iX3
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BMW iX2
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BMW iX3
Mercedes SL Class

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

BMW iX3

The BMW iX3 is an electric SUV that delivers the composed, premium driving experience BMW buyers expect. With a calm, refined cabin and practical everyday usability, it’s a strong choice for those who want electric motoring without giving up luxury and comfort.

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P90626566_lowRes_the-new-bmw-ix3-50-x

Reviews BMW iX3

4.6 (4 Reviews)
rate
Johan
20 Sept 2025, 16:15:37

Nice range, fast charging and… bidirectional charging!!

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 iX3
Mercedes SL Class

Costs and Consumption
Price
54,300 - 66,300 £
Price
112,700 - 219,300 £
Consumption L/100km
-
Consumption L/100km
9 - 13.6 L/100km
Consumption kWh/100km
14.6 - 15.1 kWh/100km
Consumption kWh/100km
-
Electric Range
635 - 805 km
Electric Range
12 km
Battery Capacity
-
Battery Capacity
-
co2
0 g/km
co2
206 - 309 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
SUV
Body Type
Roadster
Seats
5
Seats
4
Doors
-
Doors
-
Curb weight
2,360 kg
Curb weight
1,810 - 2,195 kg
Trunk capacity
-
Trunk capacity
110 - 240 L
Length
-
Length
-
Width
1,895 mm
Width
1,915 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
465 kg
Payload
145 - 375 kg

Engine and Performance
Engine Type
Electric
Engine Type
Petrol MHEV, Petrol, Plugin Hybrid
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Reduction Gearbox
Transmission Detail
Automatic Gearbox
Drive Type
All-Wheel Drive, Rear-Wheel Drive
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Power HP
320 - 469 HP
Power HP
435 - 816 HP
Acceleration 0-100km/h
4.9 - 5.9 s
Acceleration 0-100km/h
2.9 - 4.7 s
Max Speed
-
Max Speed
-
Torque
500 - 645 Nm
Torque
500 - 1,420 Nm
Number of Cylinders
-
Number of Cylinders
4 - 8
Power kW
235 - 345 kW
Power kW
320 - 600 kW
Engine capacity
-
Engine capacity
1,991 - 3,982 cm3

General
Model Year
2026
Model Year
2025
CO2 Efficiency Class
A
CO2 Efficiency Class
G
Brand
BMW
Brand
Mercedes-Benz
What drive types are available for the BMW iX3?

Available configurations include All-Wheel Drive or Rear-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.