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Audi A6 Limousine vs Citroen C5 X comparison

Compare performance (367 HP vs 145 HP), boot space and price (47,600 £ vs 39,400 £ ) at a glance. Find out which car is the better choice for you – Audi A6 Limousine or Citroen C5 X?

Audi A6 Limousine vs Citroen C5 X: Key differences

Audi A6 Limousine

  • substantially more power
  • substantially more efficient
  • clearly quicker 0–100 km/h
details

Citroen C5 X

4 (3 Reviews)
rate
  • visibly cheaper
  • moderately lighter
  • very slightly more trunk space
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By Achim Sedelmaier

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

A6 Limousine

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 visibly cheaper – starting at 39,400 £ , while the Audi A6 Limousine costs 47,600 £ . That’s a price difference of around 8,143 £.

Fuel consumption also shows a difference: the Audi A6 Limousine uses 2.2 L/100km and is substantially more efficient than the Citroen C5 X with 5.1 L/100km. The difference is about 2.9 L/100km.

C5 X

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 Audi A6 Limousine offers substantially more power – delivering 367 HP compared to 145 HP. That’s roughly 222 HP more horsepower.

When accelerating from 0 to 100 km/h, the Audi A6 Limousine is clearly quicker – completing the sprint in 4.7 s, while the Citroen C5 X takes 10.4 s. That’s about 5.7 s quicker.

There’s also a difference in torque: the Audi A6 Limousine delivers considerably more torque with 580 Nm compared to 230 Nm. That’s about 350 Nm more.

A6 Limousine

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 moderately lighter – 1,591 kg compared to 1,845 kg. The difference is around 254 kg.

Looking at boot space, the Citroen C5 X offers very slightly more boot space – 545 L compared to 492 L. That’s a difference of about 53 L.

When it comes to payload, the Audi A6 Limousine carries clearly more – 625 kg compared to 399 kg. That’s a difference of about 226 kg.

Who wins the race in the data check?

The Audi A6 Limousine 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 £47,600
A6 Limousine

Audi A6 Limousine

  • Engine Type : Petrol, Diesel MHEV, Petrol MHEV, Plugin Hybrid
  • Transmission : Automatic
  • Drive Type : Front-Wheel Drive, All-Wheel Drive
  • Power HP : 204 - 367 HP
  • Consumption L/100km : 2.2 - 7.3 L/100km
  • Electric Range : 97 - 105 km
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Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Audi A6 Limousine

The Audi A6 cuts a clean, purposeful silhouette with an interior that feels like a quiet, high-tech office on wheels—luxurious materials and clever gadgets make long journeys surprisingly pleasant. It balances composed, confident driving with enough flair to keep you entertained, making it a sensible choice for buyers who want executive polish without showing off.

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Reviews Audi A6 Limousine

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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.

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Reviews Citroen C5 X

4 (3 Reviews)
rate

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

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Audi A6 Limousine
Citroen C5 X

Costs and Consumption
Price
47,600 - 68,100 £
Price
39,400 £
Consumption L/100km
2.2 - 7.3 L/100km
Consumption L/100km
5.1 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
97 - 105 km
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
49 - 166 g/km
co2
116 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Sedan
Body Type
Estate
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
1,845 - 2,220 kg
Curb weight
1,591 kg
Trunk capacity
354 - 492 L
Trunk capacity
545 L
Length
-
Length
-
Width
1,875 mm
Width
1,815 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
535 - 625 kg
Payload
399 kg

Engine and Performance
Engine Type
Petrol, Diesel MHEV, Petrol MHEV, Plugin Hybrid
Engine Type
Petrol MHEV
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Dual-Clutch Automatic
Transmission Detail
Dual-Clutch Automatic
Drive Type
Front-Wheel Drive, All-Wheel Drive
Drive Type
Front-Wheel Drive
Power HP
204 - 367 HP
Power HP
145 HP
Acceleration 0-100km/h
4.7 - 8.2 s
Acceleration 0-100km/h
10.4 s
Max Speed
-
Max Speed
-
Torque
340 - 580 Nm
Torque
230 Nm
Number of Cylinders
4 - 6
Number of Cylinders
3
Power kW
150 - 270 kW
Power kW
107 kW
Engine capacity
1,968 - 2,995 cm3
Engine capacity
1,199 cm3

General
Model Year
2025
Model Year
2025
CO2 Efficiency Class
F, D, E, B
CO2 Efficiency Class
D
Brand
Audi
Brand
Citroen
What drivetrain options does the Audi A6 Limousine have?

Available configurations include Front-Wheel Drive or All-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.