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Citroen C5 X vs Mercedes C-Class Saloon comparison

Compare performance (145 HP vs 680 HP), boot space and price (39,400 £ vs 41,300 £ ) at a glance. Find out which car is the better choice for you – Citroen C5 X or Mercedes C-Class Saloon?

Citroen C5 X vs Mercedes C-Class Saloon: Key differences

Citroen C5 X

4.2 (4 Reviews)
rate
  • marginally cheaper
  • marginally lighter
  • a bit more trunk space
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Mercedes C-Class Saloon

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

C5 X

Costs and Efficiency:

Price and efficiency are often the first things buyers look at. Here it becomes clear which model has the long-term edge – whether at the pump, the plug, or in purchase price.

Citroen C5 X is marginally cheaper – starting at 39,400 £ , while the Mercedes C-Class Saloon costs 41,300 £ . That’s a price difference of around 1,897 £.

Fuel consumption also shows a difference: the Mercedes C-Class Saloon uses 4.5 L/100km and is a bit more efficient than the Citroen C5 X with 5.1 L/100km. The difference is about 0.6 L/100km.

C-Class Saloon

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 C-Class Saloon offers substantially more power – delivering 680 HP compared to 145 HP. That’s roughly 535 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes C-Class Saloon is significantly quicker – completing the sprint in 3.4 s, while the Citroen C5 X takes 10.4 s. That’s about 7 s quicker.

There’s also a difference in torque: the Mercedes C-Class Saloon delivers considerably more torque with 1,020 Nm compared to 230 Nm. That’s about 790 Nm more.

C5 X

Space and Everyday Use:

Cabin size, boot volume and payload all play a role in everyday practicality. Here, comfort and flexibility make the difference.

Both vehicles offer seating for 5 people.

In terms of curb weight, Citroen C5 X is marginally lighter – 1,591 kg compared to 1,695 kg. The difference is around 104 kg.

Looking at boot space, the Citroen C5 X offers a bit more boot space – 545 L compared to 455 L. That’s a difference of about 90 L.

When it comes to payload, the Mercedes C-Class Saloon carries visibly more – 570 kg compared to 399 kg. That’s a difference of about 171 kg.

Who wins the race in the data check?

The Mercedes C-Class Saloon is clearly superior 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 £41,300
C-Class Saloon

Mercedes C-Class Saloon

  • Engine Type Petrol MHEV, Diesel MHEV, Plugin Hybrid
  • Transmission Automatic
  • Drive Type Rear-Wheel Drive, All-Wheel Drive
  • Power HP 183 - 680 HP
  • Consumption L/100km 4.5 - 9 L/100km
  • Electric Range 11 km
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Frequently compared as well

Citroen C4
Citroen C5 X
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The Citroen C4 and Citroen C5 X are both modern takes on comfortable, characterful French family cars but aim at slightly different buyers: the C4 is a compact, city‑friendly hatchback while the C5 X blends estate and SUV traits into a roomy fastback. Pick the C4 for easier parking, lower running …
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Citroen C5 X
Mercedes C-Class Saloon

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

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.

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C5X_PHEV_UK_2022_EXT (21)
C5X_PHEV_2022_EXT (12)
C5X_PHEV_2022_EXT (23)
C5X_2022_INT (20)

Reviews Citroen C5 X

4.2 (4 Reviews)
rate
Flament
13 Jun 2026, 13:54:21

Value for money / comfort, space unbeatable — C5 X Shine, 4‑cylinder petrol with options... heated, electrically adjustable programmable seat, 2 years, 12,000 km, €23,000

Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Safety
Practicality / Trunk & Everyday Use
Value for Money

Mercedes C-Class Saloon

The Mercedes C‑Class is the compact executive that dresses like it owns the boulevard, with an interior that blends modern elegance and plush comfort to make everyday driving feel unexpectedly special. On the road it pairs poise with a hint of cheeky agility, rewarding drivers who want refinement without forfeiting a touch of fun — and yes, it still looks great in the driveway.

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21C0295_012
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21C0297_069

Reviews Mercedes C-Class Saloon

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

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Citroen C5 X
Mercedes C-Class Saloon

Costs and Consumption
Price
39,400 £
Price
41,300 - 103,400 £
Consumption L/100km
5.1 L/100km
Consumption L/100km
4.5 - 9 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
11 km
Battery Capacity
-
Battery Capacity
-
co2
116 g/km
co2
119 - 205 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Estate
Body Type
Sedan
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
1,591 kg
Curb weight
1,695 - 2,165 kg
Trunk capacity
545 L
Trunk capacity
280 - 455 L
Length
-
Length
-
Width
1,815 mm
Width
1,820 - 1,900 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
399 kg
Payload
485 - 570 kg

Engine and Performance
Engine Type
Petrol MHEV
Engine Type
Petrol MHEV, Diesel MHEV, Plugin Hybrid
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Dual-Clutch Automatic
Transmission Detail
Automatic Gearbox
Drive Type
Front-Wheel Drive
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Power HP
145 HP
Power HP
183 - 680 HP
Acceleration 0-100km/h
10.4 s
Acceleration 0-100km/h
3.4 - 8.6 s
Max Speed
-
Max Speed
-
Torque
230 Nm
Torque
250 - 1,020 Nm
Number of Cylinders
3
Number of Cylinders
4
Power kW
107 kW
Power kW
135 - 500 kW
Engine capacity
1,199 cm3
Engine capacity
1,496 - 1,999 cm3

General
Model Year
2025
Model Year
2,024 - 2,025
CO2 Efficiency Class
D
CO2 Efficiency Class
E, D, G
Brand
Citroen
Brand
Mercedes-Benz
What drive types are available for the Citroen C5 X?

Available configurations include Front-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.