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Audi A6 Avant vs Citroen C5 X comparison

Compare performance (367 HP vs 145 HP), boot space and price (49,700 £ vs 39,400 £ ) at a glance. Find out which car is the better choice for you – Audi A6 Avant or Citroen C5 X?

Audi A6 Avant vs Citroen C5 X: Key differences

Audi A6 Avant

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

Citroen C5 X

4.2 (4 Reviews)
rate
  • clearly cheaper
  • somewhat lighter
  • marginally more trunk space
details

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

A6 Avant

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 clearly cheaper – starting at 39,400 £ , while the Audi A6 Avant costs 49,700 £ . That’s a price difference of around 10,286 £.

Fuel consumption also shows a difference: the Audi A6 Avant uses 2.3 L/100km and is significantly more efficient than the Citroen C5 X with 5.1 L/100km. The difference is about 2.8 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 Avant offers clearly 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 Avant 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 Avant delivers substantially more torque with 580 Nm compared to 230 Nm. That’s about 350 Nm more.

A6 Avant

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 somewhat lighter – 1,591 kg compared to 1,865 kg. The difference is around 274 kg.

Looking at boot space, the Citroen C5 X offers marginally more boot space – 545 L compared to 503 L. That’s a difference of about 42 L.

When it comes to payload, the Audi A6 Avant carries clearly more – 570 kg compared to 399 kg. That’s a difference of about 171 kg.

Who wins the race in the data check?

The Audi A6 Avant stands well ahead of its rival 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 £49,700
A6 Avant

Audi A6 Avant

  • Engine Type Petrol, Petrol MHEV, Diesel MHEV, Plugin Hybrid
  • Transmission Automatic
  • Drive Type Front-Wheel Drive, All-Wheel Drive
  • Power HP 204 - 367 HP
  • Consumption L/100km 2.3 - 7.5 L/100km
  • Electric Range 94 - 101 km
details

Frequently compared as well

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Audi A6 Avant
Citroen C5 X

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Audi A6 Avant

The Audi A6 Avant wraps executive poise and usable practicality into an impeccably finished estate that makes everyday driving feel noticeably more grown-up. It serves up a calm, composed ride and clever packaging for buyers who want space and refinement without ostentation — the sensible choice that still manages to impress.

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Reviews Audi A6 Avant

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

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

4.2 (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

Frequently compared as well

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Citroen C5 X

Costs and Consumption
Price
49,700 - 70,200 £
Price
39,400 £
Consumption L/100km
2.3 - 7.5 L/100km
Consumption L/100km
5.1 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
94 - 101 km
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
53 - 170 g/km
co2
116 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Estate
Body Type
Estate
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
1,865 - 2,240 kg
Curb weight
1,591 kg
Trunk capacity
404 - 503 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 - 570 kg
Payload
399 kg

Engine and Performance
Engine Type
Petrol, Petrol MHEV, Diesel 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 - 8.3 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
Is the Audi A6 Avant offered with different drivetrains?

The Audi A6 Avant is offered with 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.