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Audi A6 Avant vs Mercedes C Class Wagon comparison

Compare performance (367 HP vs 288 HP), boot space and price (49,700 £ vs 42,600 £ ) at a glance. Find out which car is the better choice for you – Audi A6 Avant or Mercedes C Class Wagon?

Audi A6 Avant vs Mercedes C Class Wagon: Key differences

Audi A6 Avant

  • clearly more power
  • considerably more efficient
  • noticeably quicker 0–100 km/h
  • only slightly more trunk space
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Mercedes C Class Wagon

  • somewhat cheaper
  • very slightly lighter
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By Achim Sedelmaier

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

A6 Avant

Costs and Efficiency:

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

Mercedes C Class Wagon is somewhat cheaper – starting at 42,600 £ , while the Audi A6 Avant costs 49,700 £ . That’s a price difference of around 7,114 £.

Fuel consumption also shows a difference: the Audi A6 Avant uses 2.3 L/100km and is considerably more efficient than the Mercedes C Class Wagon with 4.7 L/100km. The difference is about 2.4 L/100km.

C Class Wagon

Engine and Performance:

Under the bonnet, it becomes clear which model is tuned for sportiness and which one takes the lead when you hit the accelerator.

When it comes to engine power, the Audi A6 Avant offers clearly more power – delivering 367 HP compared to 288 HP. That’s roughly 79 HP more horsepower.

When accelerating from 0 to 100 km/h, the Audi A6 Avant is noticeably quicker – completing the sprint in 4.7 s, while the Mercedes C Class Wagon takes 5.8 s. That’s about 1.1 s quicker.

There’s also a difference in torque: the Audi A6 Avant delivers only slightly more torque with 580 Nm compared to 550 Nm. That’s about 30 Nm more.

A6 Avant

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, Mercedes C Class Wagon is very slightly lighter – 1,755 kg compared to 1,865 kg. The difference is around 110 kg.

Looking at boot space, the Audi A6 Avant offers only slightly more boot space – 503 L compared to 490 L. That’s a difference of about 13 L.

When it comes to payload, the Audi A6 Avant carries very slightly more – 570 kg compared to 565 kg. That’s a difference of about 5 kg.

Who wins the race in the data check?

The Audi A6 Avant 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 £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
Audi A6 Avant
Mercedes C Class Wagon

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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Mercedes C Class Wagon

The Mercedes C-Class wagon dresses Mercedes refinement in a sensible, practical package, marrying a sleek estate silhouette with a plush, high-quality cabin that feels more premium than its badge implies. It quietly soaks up motorway miles and cartloads of family kit with composed handling and effortless comfort — a clever alternative to an SUV for buyers who still like to steer.

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Audi A6 Avant
Mercedes C Class Wagon

Costs and Consumption

Price
49,700 - 70,200 £
Price
42,600 - 67,200 £
Consumption L/100km
2.3 - 7.5 L/100km
Consumption L/100km
4.7 - 6.9 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
123 - 157 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
1,755 - 1,940 kg
Trunk capacity
404 - 503 L
Trunk capacity
490 L
Length
-
Length
-
Width
1,875 mm
Width
1,820 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
535 - 570 kg
Payload
460 - 565 kg

Engine and Performance

Engine Type
Petrol, Petrol MHEV, Diesel MHEV, Plugin Hybrid
Engine Type
Petrol MHEV, Diesel MHEV
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Dual-Clutch Automatic
Transmission Detail
Automatic Gearbox
Drive Type
Front-Wheel Drive, All-Wheel Drive
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Power HP
204 - 367 HP
Power HP
186 - 288 HP
Acceleration 0-100km/h
4.7 - 8.3 s
Acceleration 0-100km/h
5.8 - 8.8 s
Max Speed
-
Max Speed
-
Torque
340 - 580 Nm
Torque
250 - 550 Nm
Number of Cylinders
4 - 6
Number of Cylinders
4
Power kW
150 - 270 kW
Power kW
137 - 212 kW
Engine capacity
1,968 - 2,995 cm3
Engine capacity
1,496 - 1,999 cm3

General

Model Year
2025
Model Year
2,024 - 2,025
CO2 Efficiency Class
F, D, E, B
CO2 Efficiency Class
E, F, D
Brand
Audi
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.