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BMW iX vs Mercedes S Class - Differences and prices compared

Compare performance (659 HP vs 802 HP), boot space and price (71600 £ vs 97200 £) at a glance. Find out which car is the better choice for you – BMW iX or Mercedes S Class?

BMW iX

Mercedes S Class

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

iX

Costs and Efficiency:

When it comes to price and running costs, the biggest differences usually appear. This is often where you see which car fits your budget better in the long run.

BMW iX has a noticeable advantage in terms of price – it starts at 71600 £, while the Mercedes S Class costs 97200 £. That’s a price difference of around 25599 £.

As for range, the BMW iX performs decisively better – achieving up to 701 km, about 584 km more than the Mercedes S Class.

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 has a a bit edge – offering 802 HP compared to 659 HP. That’s roughly 143 HP more horsepower.

In acceleration from 0 to 100 km/h, the Mercedes S Class is a bit quicker – completing the sprint in 3.30 s, while the BMW iX takes 3.80 s. That’s about 0.50 s faster.

There’s no difference in top speed – both reach 250 km/h.

There’s also a difference in torque: Mercedes S Class pulls noticeable stronger with 1430 Nm compared to 1015 Nm. That’s about 415 Nm difference.

iX

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.

Both vehicles offer seating for 5 people.

In curb weight, Mercedes S Class is clearly perceptible lighter – 2070 kg compared to 2525 kg. The difference is around 455 kg.

In terms of boot space, the Mercedes S Class offers slight more room – 550 L compared to 500 L. That’s a difference of about 50 L.

When it comes to payload, Mercedes S Class clearly perceptible takes the win – 730 kg compared to 575 kg. That’s a difference of about 155 kg.

Who wins the race?

The BMW iX proves to be outperforms in nearly all aspects and therefore becomes our DriveDuel Champion!
BMW iX is the better all-rounder in this comparison.

from about £71,600
iX

BMW iX

  • Engine Type : Electric
  • Transmission : Automatic
  • Drive Type : All-Wheel Drive
  • Power HP : 408 - 659 HP
  • Consumption kWh/100km : 17.8 - 20.6 kWh
  • Electric Range : 600 - 701 km
BMW iX
Mercedes S Class

Costs and Consumption

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Engine and Performance

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Dimensions and Body

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BMW iX

The BMW iX arrives like a tech-rich luxury SUV that refuses to shout, offering a serene yet authoritative road presence that suits both city commutes and long-distance cruising. Inside, its minimalist cabin wraps high-quality materials and clever interfaces around a driver-focused layout, making it feel more like a forward-thinking lounge than just another electric appliance — and yes, it still delivers the dynamic driving character you'd expect from a BMW.

details

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
BMW iX
Mercedes S Class
iX
S Class

Costs and Consumption

Price
71600 - 107100 £
Price
97200 - 204400 £
Consumption L/100km
-
Consumption L/100km
2.3 - 13.2 L
Consumption kWh/100km
17.8 - 20.6 kWh
Consumption kWh/100km
-
Electric Range
600 - 701 km
Electric Range
31 - 117 km
Battery Capacity
96 - 109.6 kWh
Battery Capacity
10.40 kWh
co2
0 g/km
co2
52 - 301 g/km
Fuel tank capacity
-
Fuel tank capacity
65 - 76 L

Dimensions and Body

Body Type
SUV
Body Type
Sedan
Seats
5
Seats
5
Doors
5
Doors
4
Curb weight
2525 - 2655 kg
Curb weight
2070 - 2650 kg
Trunk capacity
500 L
Trunk capacity
325 - 550 L
Length
4965 mm
Length
5179 - 5469 mm
Width
1970 mm
Width
1921 - 1954 mm
Height
1688 - 1695 mm
Height
1503 - 1515 mm
Max trunk capacity
1750 L
Max trunk capacity
-
Payload
505 - 575 kg
Payload
420 - 730 kg

Engine and Performance

Engine Type
Electric
Engine Type
Petrol MHEV, Petrol, Plugin Hybrid, Diesel MHEV
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Reduction Gearbox
Transmission Detail
Automatic Gearbox
Drive Type
All-Wheel Drive
Drive Type
All-Wheel Drive, Rear-Wheel Drive
Power HP
408 - 659 HP
Power HP
336 - 802 HP
Acceleration 0-100km/h
3.8 - 5.1 s
Acceleration 0-100km/h
3.3 - 5.9 s
Max Speed
200 - 250 km/h
Max Speed
250 km/h
Torque
700 - 1015 Nm
Torque
500 - 1430 Nm
Number of Cylinders
-
Number of Cylinders
6 - 12
Power kW
300 - 485 kW
Power kW
247 - 590 kW
Engine capacity
-
Engine capacity
2989 - 5980 cm3

General

Model Year
2025
Model Year
2024 - 2025
CO2 Efficiency Class
A
CO2 Efficiency Class
G, E, F, B
Brand
BMW
Brand
Mercedes-Benz
Is the BMW iX offered with different drivetrains?

The BMW iX is offered with All-Wheel Drive.

The prices and data displayed are estimates based on German list prices and may vary by country. This information is not legally binding.