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Citroen C5 X vs Mercedes S Class comparison

Compare performance (145 HP vs 585 HP), boot space and price (36,900 £ vs 104,000 £ ) at a glance. Find out which car is the better choice for you – Citroen C5 X or Mercedes S Class?

Citroen C5 X vs Mercedes S Class: Key differences

Citroen C5 X

4 (3 Reviews)
rate
  • substantially cheaper
  • clearly lighter

Mercedes S Class

  • substantially more power
  • considerably more efficient
  • significantly quicker 0–100 km/h

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

C5 X

Costs and Efficiency:

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

Citroen C5 X is substantially cheaper – starting at 36,900 £ , while the Mercedes S Class costs 104,000 £ . That’s a price difference of around 67,111 £.

Fuel consumption also shows a difference: the Mercedes S Class uses 2.2 L/100km and is considerably more efficient than the Citroen C5 X with 5.1 L/100km. The difference is about 2.9 L/100km.

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 offers substantially more power – delivering 585 HP compared to 145 HP. That’s roughly 440 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes S Class is significantly quicker – completing the sprint in 4 s, while the Citroen C5 X takes 10.4 s. That’s about 6.4 s quicker.

There’s also a difference in torque: the Mercedes S Class delivers substantially more torque with 750 Nm compared to 230 Nm. That’s about 520 Nm more.

C5 X

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, Citroen C5 X is clearly lighter – 1,591 kg compared to 2,165 kg. The difference is around 574 kg.

When it comes to payload, the Mercedes S Class carries clearly more – 660 kg compared to 399 kg. That’s a difference of about 261 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.

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 - 585 HP
  • Consumption L/100km : 2.2 - 10.6 L/100km
  • Electric Range : 102 - 118 km
Citroen C5 X
Mercedes S Class

Costs and Consumption

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Engine and Performance

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Dimensions and Body

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Citroen C5 X

Citroen C5 X combines the poise of a sleek crossover with the practicality of an estate, delivering a calm, comfortable cabin that feels designed for long, relaxed journeys rather than racetrack drama. If you want a car that pampers passengers, swallows everyday luggage and glides over rough roads like a diplomat dodging awkward questions, this is your kind of transport.

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
Citroen C5 X
Mercedes S Class

Costs and Consumption

Price
36,900 - 39,400 £
Price
104,000 - 139,100 £
Consumption L/100km
5.1 L/100km
Consumption L/100km
2.2 - 10.6 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
102 - 118 km
Battery Capacity
-
Battery Capacity
-
co2
116 g/km
co2
50 - 241 g/km
Fuel tank capacity
52 L
Fuel tank capacity
-

Dimensions and Body

Body Type
Estate
Body Type
Sedan
Seats
5
Seats
5
Doors
5
Doors
-
Curb weight
1,591 kg
Curb weight
2,165 - 2,515 kg
Trunk capacity
545 L
Trunk capacity
-
Length
4,805 mm
Length
-
Width
1,815 mm
Width
1,921 mm
Height
1,485 mm
Height
-
Max trunk capacity
1,640 L
Max trunk capacity
-
Payload
399 kg
Payload
555 - 660 kg

Engine and Performance

Engine Type
Petrol MHEV
Engine Type
Petrol MHEV, Plugin Hybrid, Diesel MHEV
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Dual-Clutch Automatic
Transmission Detail
Automatic Gearbox
Drive Type
Front-Wheel Drive
Drive Type
All-Wheel Drive, Rear-Wheel Drive
Power HP
145 HP
Power HP
336 - 585 HP
Acceleration 0-100km/h
10.4 s
Acceleration 0-100km/h
4 - 5.7 s
Max Speed
211 km/h
Max Speed
-
Torque
230 Nm
Torque
560 - 750 Nm
Number of Cylinders
3
Number of Cylinders
6 - 8
Power kW
107 kW
Power kW
247 - 430 kW
Engine capacity
1,199 cm3
Engine capacity
2,989 - 3,982 cm3

General

Model Year
2,025
Model Year
2,026
CO2 Efficiency Class
D
CO2 Efficiency Class
G, B, F
Brand
Citroen
Brand
Mercedes-Benz
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.