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Citroen C5 X vs BMW 8 Series Convertible comparison

Compare performance (145 HP vs 625 HP), boot space and price (39,400 £ vs 99,400 £ ) at a glance. Find out which car is the better choice for you – Citroen C5 X or BMW 8 Series Convertible?

Citroen C5 X vs BMW 8 Series Convertible: Key differences

Citroen C5 X

4.2 (4 Reviews)
rate
  • significantly cheaper
  • visibly more efficient
  • noticeably lighter
  • noticeably more trunk space
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BMW 8 Series Convertible

  • considerably more power
  • substantially 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 significantly cheaper – starting at 39,400 £ , while the BMW 8 Series Convertible costs 99,400 £ . That’s a price difference of around 60,000 £.

Fuel consumption also shows a difference: the Citroen C5 X uses 5.1 L/100km and is visibly more efficient than the BMW 8 Series Convertible with 6.9 L/100km. The difference is about 1.8 L/100km.

8 Series Convertible

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 BMW 8 Series Convertible offers considerably more power – delivering 625 HP compared to 145 HP. That’s roughly 480 HP more horsepower.

When accelerating from 0 to 100 km/h, the BMW 8 Series Convertible is substantially quicker – completing the sprint in 3.3 s, while the Citroen C5 X takes 10.4 s. That’s about 7.1 s quicker.

There’s also a difference in torque: the BMW 8 Series Convertible 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?

Seats: Citroen C5 X offers more seats – 5 vs 4.

In terms of curb weight, Citroen C5 X is noticeably lighter – 1,591 kg compared to 1,915 kg. The difference is around 324 kg.

Looking at boot space, the Citroen C5 X offers noticeably more boot space – 545 L compared to 350 L. That’s a difference of about 195 L.

When it comes to payload, the BMW 8 Series Convertible carries barely more – 425 kg compared to 399 kg. That’s a difference of about 26 kg.

Who wins the race in the data check?

The BMW 8 Series Convertible 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 £99,400
8 Series Convertible

BMW 8 Series Convertible

  • Engine Type Diesel MHEV, Petrol
  • Transmission Automatic
  • Drive Type All-Wheel Drive, Rear-Wheel Drive
  • Power HP 333 - 625 HP
  • Consumption L/100km 6.9 - 11.2 L/100km
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Frequently compared as well

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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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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

BMW 8 Series Convertible

The BMW 8 Series Convertible is a head-turning grand tourer that drops its roof with the kind of theatrical flourish you expect from a modern Bavarian showboat. It wraps occupants in sumptuous materials and driver-focused polish, offering effortless long-distance comfort and just enough drama to make every arrival feel like an occasion.

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P90343983_highRes_the-new-bmw-m850i-xd
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Reviews BMW 8 Series Convertible

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

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Costs and Consumption
Price
39,400 £
Price
99,400 - 165,800 £
Consumption L/100km
5.1 L/100km
Consumption L/100km
6.9 - 11.2 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
116 g/km
co2
180 - 255 g/km
Fuel tank capacity
-
Fuel tank capacity
66 - 68 L

Dimensions and Body
Body Type
Estate
Body Type
Convertible
Seats
5
Seats
4
Doors
-
Doors
2
Curb weight
1,591 kg
Curb weight
1,915 - 2,125 kg
Trunk capacity
545 L
Trunk capacity
350 L
Length
-
Length
4,851 - 4,867 mm
Width
1,815 mm
Width
1,902 - 1,907 mm
Height
-
Height
1,345 - 1,353 mm
Max trunk capacity
-
Max trunk capacity
-
Payload
399 kg
Payload
340 - 425 kg

Engine and Performance
Engine Type
Petrol MHEV
Engine Type
Diesel MHEV, Petrol
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
333 - 625 HP
Acceleration 0-100km/h
10.4 s
Acceleration 0-100km/h
3.3 - 5.5 s
Max Speed
-
Max Speed
250 km/h
Torque
230 Nm
Torque
500 - 750 Nm
Number of Cylinders
3
Number of Cylinders
6 - 8
Power kW
107 kW
Power kW
245 - 460 kW
Engine capacity
1,199 cm3
Engine capacity
2,993 - 4,395 cm3

General
Model Year
2025
Model Year
2024
CO2 Efficiency Class
D
CO2 Efficiency Class
G
Brand
Citroen
Brand
BMW
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.