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Audi A6 Avant vs Mercedes G-Class comparison

Compare performance (367 HP vs 605 HP), boot space and price (49,700 £ vs 106,600 £ ) at a glance. Find out which car is the better choice for you – Audi A6 Avant or Mercedes G-Class?

Audi A6 Avant vs Mercedes G-Class: Key differences

Audi A6 Avant

  • substantially cheaper
  • significantly more efficient
  • noticeably lighter
details

Mercedes G-Class

  • markedly more power
  • clearly more electric range
  • marginally quicker 0–100 km/h
  • markedly more trunk space
details

By Achim Sedelmaier

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

A6 Avant

Costs and Efficiency:

Looking at overall running costs, both models reveal some interesting differences in everyday economy.

Audi A6 Avant is substantially cheaper – starting at 49,700 £ , while the Mercedes G-Class costs 106,600 £ . That’s a price difference of around 56,876 £.

Fuel consumption also shows a difference: the Audi A6 Avant uses 2.3 L/100km and is significantly more efficient than the Mercedes G-Class with 8.7 L/100km. The difference is about 6.4 L/100km.

As for electric range, the Mercedes G-Class offers clearly more range – reaching up to 479 km, about 378 km more than the Audi A6 Avant.

G-Class

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 G-Class offers markedly more power – delivering 605 HP compared to 367 HP. That’s roughly 238 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes G-Class is marginally quicker – completing the sprint in 4.4 s, while the Audi A6 Avant takes 4.7 s. That’s about 0.3 s quicker.

There’s also a difference in torque: the Mercedes G-Class delivers considerably more torque with 1,164 Nm compared to 580 Nm. That’s about 584 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 2,485 kg. The difference is around 620 kg.

Looking at boot space, the Mercedes G-Class offers markedly more boot space – 640 L compared to 503 L. That’s a difference of about 137 L.

When it comes to payload, the Mercedes G-Class carries clearly more – 715 kg compared to 570 kg. That’s a difference of about 145 kg.

Who wins the race in the data check?

The Audi A6 Avant is barely ahead 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

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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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Mercedes G-Class

The G-Class, often called the G‑Wagen, is a blocky icon that blends unapologetic off-road prowess with a plush, modern cabin, announcing your arrival before you even step out. It’s equally at home crawling over rocks or cruising city streets, and owning one feels like adopting a very expensive, very capable personality.

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Costs and Consumption
Price
49,700 - 70,200 £
Price
106,600 - 171,000 £
Consumption L/100km
2.3 - 7.5 L/100km
Consumption L/100km
8.7 - 14.7 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
28 kWh/100km
Electric Range
94 - 101 km
Electric Range
479 km
Battery Capacity
-
Battery Capacity
-
co2
53 - 170 g/km
co2
0 - 336 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Estate
Body Type
Off-Roader
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
1,865 - 2,240 kg
Curb weight
2,485 - 3,085 kg
Trunk capacity
404 - 503 L
Trunk capacity
640 L
Length
-
Length
-
Width
1,875 mm
Width
1,931 - 1,984 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
535 - 570 kg
Payload
115 - 715 kg

Engine and Performance
Engine Type
Petrol, Petrol MHEV, Diesel MHEV, Plugin Hybrid
Engine Type
Petrol MHEV, Diesel MHEV, Electric
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Dual-Clutch Automatic
Transmission Detail
Automatic Gearbox, Reduction Gearbox
Drive Type
Front-Wheel Drive, All-Wheel Drive
Drive Type
All-Wheel Drive
Power HP
204 - 367 HP
Power HP
387 - 605 HP
Acceleration 0-100km/h
4.7 - 8.3 s
Acceleration 0-100km/h
4.4 - 5.8 s
Max Speed
-
Max Speed
-
Torque
340 - 580 Nm
Torque
760 - 1,164 Nm
Number of Cylinders
4 - 6
Number of Cylinders
6 - 8
Power kW
150 - 270 kW
Power kW
285 - 445 kW
Engine capacity
1,968 - 2,995 cm3
Engine capacity
2,989 - 3,982 cm3

General
Model Year
2025
Model Year
2,025 - 2,026
CO2 Efficiency Class
F, D, E, B
CO2 Efficiency Class
G, 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.