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Audi A6 Avant vs Mercedes GLC EQ comparison

Compare performance (367 HP vs 489 HP), boot space and price (49,700 £ vs 61,100 £ ) at a glance. Find out which car is the better choice for you – Audi A6 Avant or Mercedes GLC EQ?

Audi A6 Avant vs Mercedes GLC EQ: Key differences

Audi A6 Avant

  • visibly cheaper
  • visibly lighter
details

Mercedes GLC EQ

4.7 (3 Reviews)
rate
  • noticeably more power
  • clearly more electric range
  • barely quicker 0–100 km/h
  • moderately 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:

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 visibly cheaper – starting at 49,700 £ , while the Mercedes GLC EQ costs 61,100 £ . That’s a price difference of around 11,384 £.

As for electric range, the Mercedes GLC EQ offers clearly more range – reaching up to 714 km, about 613 km more than the Audi A6 Avant.

GLC EQ

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 GLC 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 GLC EQ is barely quicker – completing the sprint in 4.3 s, while the Audi A6 Avant takes 4.7 s. That’s about 0.4 s quicker.

There’s also a difference in torque: the Mercedes GLC EQ delivers clearly more torque with 800 Nm compared to 580 Nm. That’s about 220 Nm more.

A6 Avant

Space and Everyday Use:

Beyond pure performance, interior space and usability matter most in daily life. This is where you see which car is more practical and versatile.

Both vehicles offer seating for 5 people.

In terms of curb weight, Audi A6 Avant is visibly lighter – 1,865 kg compared to 2,535 kg. The difference is around 670 kg.

Looking at boot space, the Mercedes GLC EQ offers moderately more boot space – 570 L compared to 503 L. That’s a difference of about 67 L.

When it comes to payload, the Audi A6 Avant carries a bit 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 GLC 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 £61,100
GLC EQ

Mercedes GLC EQ

  • Engine Type : Electric
  • Transmission : Automatic
  • Drive Type : All-Wheel Drive
  • Power HP : 489 HP
  • Consumption kWh/100km : 14.9 - 16.6 kWh/100km
  • Electric Range : 645 - 714 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 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.

Mercedes GLC EQ

The Mercedes GLC EQ brings an electrified touch to Mercedes’ compact luxury SUV line, combining a quiet, refined ride with the comfort and polish you expect from the brand. It’s a smart choice for buyers who want premium materials and everyday practicality while reducing fuel use, though it leans more toward comfort than sporty handling.

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Reviews Mercedes GLC EQ

4.7 (3 Reviews)
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Hannu
22 May 2026, 10:40:59

It looks like a Mercedes‑Benz and not a bar of soap. Rear space has improved. Air suspension. Luxurious materials. Great dashboard and display.

How do you mainly use this car? (optional): Commuter (short/medium distance)
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money
IVAN
13 May 2026, 22:11:19

Aesthetic presence, good electric range and usable cargo hold...

How do you mainly use this car? (optional): City / Short distance
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money
IVAN
13 May 2026, 22:02:43

Great range, good looking, and virtually zero maintenance compare to the Range Rover which is the highest mainstream maintenance vehicle presently on the road..

How do you mainly use this car? (optional): City / Short distance
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money

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Audi A6 Avant
Mercedes GLC EQ

Costs and Consumption
Price
49,700 - 70,200 £
Price
61,100 - 70,600 £
Consumption L/100km
2.3 - 7.5 L/100km
Consumption L/100km
-
Consumption kWh/100km
-
Consumption kWh/100km
14.9 - 16.6 kWh/100km
Electric Range
94 - 101 km
Electric Range
645 - 714 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
SUV
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
1,865 - 2,240 kg
Curb weight
2,535 kg
Trunk capacity
404 - 503 L
Trunk capacity
570 L
Length
-
Length
-
Width
1,875 mm
Width
1,913 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
4.3 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.