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Audi A6 Avant vs Mercedes C-Class EQ comparison

Compare performance (367 HP vs 489 HP), boot space and price (49,700 £ vs 58,000 £ ) at a glance. Find out which car is the better choice for you – Audi A6 Avant or Mercedes C-Class EQ?

Audi A6 Avant vs Mercedes C-Class EQ: Key differences

Audi A6 Avant

  • moderately cheaper
  • noticeably lighter
  • marginally more trunk space
details

Mercedes C-Class EQ

  • noticeably more power
  • clearly more electric range
  • moderately quicker 0–100 km/h
details

By Achim Sedelmaier

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

A6 Avant

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.

Audi A6 Avant is moderately cheaper – starting at 49,700 £ , while the Mercedes C-Class EQ costs 58,000 £ . That’s a price difference of around 8,324 £.

As for electric range, the Mercedes C-Class EQ offers clearly more range – reaching up to 753 km, about 652 km more than the Audi A6 Avant.

C-Class EQ

Engine and Performance:

Power, torque and acceleration say a lot about how a car feels on the road. This is where you see which model delivers more driving dynamics.

When it comes to engine power, the Mercedes C-Class EQ offers noticeably more power – delivering 489 HP compared to 367 HP. That’s roughly 122 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes C-Class EQ is moderately quicker – completing the sprint in 4 s, while the Audi A6 Avant takes 4.7 s. That’s about 0.7 s quicker.

There’s also a difference in torque: the Mercedes C-Class EQ delivers clearly more torque with 800 Nm compared to 580 Nm. That’s about 220 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, Audi A6 Avant is noticeably lighter – 1,865 kg compared to 2,460 kg. The difference is around 595 kg.

Looking at boot space, the Audi A6 Avant offers marginally more boot space – 503 L compared to 470 L. That’s a difference of about 33 L.

When it comes to payload, the Audi A6 Avant carries somewhat more – 570 kg compared to 505 kg. That’s a difference of about 65 kg.

Who wins the race in the data check?

The Mercedes C-Class EQ 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 £58,000
C-Class EQ

Mercedes C-Class EQ

  • Engine Type Electric
  • Transmission Automatic
  • Drive Type All-Wheel Drive
  • Power HP 489 HP
  • Consumption kWh/100km 14.3 - 15.6 kWh/100km
  • Electric Range 706 - 753 km
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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 EQ

The Mercedes C‑Class EQ blends the familiar poise and luxury of the C‑Class with Mercedes' EQ electric ethos, delivering a quietly refined and modern driving experience. Inside, it pairs upscale materials and tech-forward touches with a composed ride that suits both city commuting and longer journeys.

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Reviews Mercedes C-Class EQ

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Mercedes C-Class EQ

Costs and Consumption
Price
49,700 - 70,200 £
Price
58,000 - 67,600 £
Consumption L/100km
2.3 - 7.5 L/100km
Consumption L/100km
-
Consumption kWh/100km
-
Consumption kWh/100km
14.3 - 15.6 kWh/100km
Electric Range
94 - 101 km
Electric Range
706 - 753 km
Battery Capacity
-
Battery Capacity
-
co2
53 - 170 g/km
co2
0 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Estate
Body Type
Sedan
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
1,865 - 2,240 kg
Curb weight
2,460 kg
Trunk capacity
404 - 503 L
Trunk capacity
470 L
Length
-
Length
-
Width
1,875 mm
Width
1,892 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
535 - 570 kg
Payload
505 kg

Engine and Performance
Engine Type
Petrol, Petrol MHEV, Diesel MHEV, Plugin Hybrid
Engine Type
Electric
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Dual-Clutch Automatic
Transmission Detail
Reduction Gearbox
Drive Type
Front-Wheel Drive, All-Wheel Drive
Drive Type
All-Wheel Drive
Power HP
204 - 367 HP
Power HP
489 HP
Acceleration 0-100km/h
4.7 - 8.3 s
Acceleration 0-100km/h
4 s
Max Speed
-
Max Speed
-
Torque
340 - 580 Nm
Torque
800 Nm
Number of Cylinders
4 - 6
Number of Cylinders
-
Power kW
150 - 270 kW
Power kW
360 kW
Engine capacity
1,968 - 2,995 cm3
Engine capacity
-

General
Model Year
2025
Model Year
2026
CO2 Efficiency Class
F, D, E, B
CO2 Efficiency Class
A
Brand
Audi
Brand
Mercedes-Benz
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.