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Audi A6 Avant vs Mercedes C-Class Sedan – Which car suits you better?

Everyday use, family trips or long-distance drives – here’s where the differences show.
Discover whether Audi A6 Avant or Mercedes C-Class Sedan fits your lifestyle better.

Audi A6 Avant

Mercedes C-Class Sedan

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

A6 Avant @ Audi AG

Costs and Efficiency:

When it comes to price and running costs, the biggest differences usually appear. This is often where you see which car fits your budget better in the long run.

Mercedes C-Class Sedan has a noticeable advantage in terms of price – it starts at 41200 £, while the Audi A6 Avant costs 49700 £. That’s a price difference of around 8548 £.

Fuel consumption also shows a difference: Mercedes C-Class Sedan manages with 1.60 L and is therefore clearly more efficient than the Audi A6 Avant with 2.30 L. The difference is about 0.70 L per 100 km.

As for range, the Mercedes C-Class Sedan performs somewhat better – achieving up to 117 km, about 16 km more than the Audi A6 Avant.

C-Class Sedan @ Mercedes-Benz Group Media

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 Sedan has a decisively edge – offering 680 HP compared to 367 HP. That’s roughly 313 HP more horsepower.

In acceleration from 0 to 100 km/h, the Mercedes C-Class Sedan is distinct quicker – completing the sprint in 3.40 s, while the Audi A6 Avant takes 4.70 s. That’s about 1.30 s faster.

In terms of top speed, the Mercedes C-Class Sedan performs somewhat better – reaching 280 km/h, while the Audi A6 Avant tops out at 250 km/h. The difference is around 30 km/h.

There’s also a difference in torque: Mercedes C-Class Sedan pulls clearly stronger with 1020 Nm compared to 550 Nm. That’s about 470 Nm difference.

A6 Avant @ Audi AG

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 curb weight, Mercedes C-Class Sedan is slightly lighter – 1695 kg compared to 1865 kg. The difference is around 170 kg.

In terms of boot space, the Audi A6 Avant offers barely noticeable more room – 503 L compared to 455 L. That’s a difference of about 48 L.

Maximum payload is identical – both can carry up to 570 kg.

Who comes out on top?

Overall, the Mercedes C-Class Sedan shows itself to be leaves the rival little chance and secures the title of DriveDuel Champion.
It convinces with the more balanced overall package and proves to be the more versatile choice for everyday use.

Audi A6 Avant
Mercedes C-Class Sedan

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis
from about £41,200
C-Class Sedan @ Mercedes-Benz Group Media

Mercedes C-Class Sedan

  • Engine Type : Petrol MHEV, Plugin Hybrid, Diesel MHEV
  • Transmission : Automatic
  • Drive Type : Rear-Wheel Drive, All-Wheel Drive
  • Power HP : 183 - 680 HP
  • Consumption L/100km : 1.6 - 9 L
  • Electric Range : 11 - 117 km
details

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 Sedan

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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Reviews Audi A6 Avant

Reviews Mercedes C-Class Sedan

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Costs and Consumption
Price
49700 - 70200 £
Price
41200 - 103100 £
Consumption L/100km
2.3 - 7.5 L
Consumption L/100km
1.6 - 9 L
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
94 - 101 km
Electric Range
11 - 117 km
Battery Capacity
20.70 kWh
Battery Capacity
19.50 kWh
co2
53 - 170 g/km
co2
41 - 205 g/km
Fuel tank capacity
46 - 60 L
Fuel tank capacity
40 - 66 L

Dimensions and Body
Body Type
Estate
Body Type
Sedan
Seats
5
Seats
5
Doors
5
Doors
4
Curb weight
1865 - 2240 kg
Curb weight
1695 - 2195 kg
Trunk capacity
404 - 503 L
Trunk capacity
280 - 455 L
Length
4999 mm
Length
4751 - 4842 mm
Width
1875 mm
Width
1820 - 1900 mm
Height
1472 mm
Height
1438 - 1458 mm
Max trunk capacity
1423 - 1534 L
Max trunk capacity
-
Payload
535 - 570 kg
Payload
480 - 570 kg

Engine and Performance
Engine Type
Petrol, Petrol MHEV, Diesel MHEV, Plugin Hybrid
Engine Type
Petrol MHEV, Plugin Hybrid, 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
183 - 680 HP
Acceleration 0-100km/h
4.7 - 8.3 s
Acceleration 0-100km/h
3.4 - 8.6 s
Max Speed
238 - 250 km/h
Max Speed
230 - 280 km/h
Torque
340 - 550 Nm
Torque
250 - 1020 Nm
Number of Cylinders
4 - 6
Number of Cylinders
4
Power kW
150 - 270 kW
Power kW
135 - 500 kW
Engine capacity
1968 - 2995 cm3
Engine capacity
1496 - 1999 cm3

General
Model Year
2025
Model Year
2024 - 2025
CO2 Efficiency Class
F, D, E, B
CO2 Efficiency Class
E, B, D, G
Brand
Audi
Brand
Mercedes-Benz

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Is the Audi A6 Avant offered with different drivetrains?

The Audi A6 Avant is available as Front-Wheel Drive or All-Wheel Drive.

The prices and data displayed are estimates based on German list prices and may vary by country. This information is not legally binding.

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