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Audi A6 Limousine vs Mercedes G-Class comparison

Compare performance (367 HP vs 605 HP), boot space and price (47,600 £ vs 106,600 £ ) at a glance. Find out which car is the better choice for you – Audi A6 Limousine or Mercedes G-Class?

Audi A6 Limousine vs Mercedes G-Class: Key differences

Audi A6 Limousine

  • clearly cheaper
  • clearly more efficient
  • markedly lighter
details

Mercedes G-Class

  • clearly more power
  • substantially more electric range
  • very slightly quicker 0–100 km/h
  • clearly more trunk space
details

By Achim Sedelmaier

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

A6 Limousine

Costs and Efficiency:

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

Audi A6 Limousine is clearly cheaper – starting at 47,600 £ , while the Mercedes G-Class costs 106,600 £ . That’s a price difference of around 59,019 £.

Fuel consumption also shows a difference: the Audi A6 Limousine uses 2.2 L/100km and is clearly more efficient than the Mercedes G-Class with 8.7 L/100km. The difference is about 6.5 L/100km.

As for electric range, the Mercedes G-Class offers substantially more range – reaching up to 479 km, about 374 km more than the Audi A6 Limousine.

G-Class

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 Mercedes G-Class offers clearly 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 very slightly quicker – completing the sprint in 4.4 s, while the Audi A6 Limousine takes 4.7 s. That’s about 0.3 s quicker.

There’s also a difference in torque: the Mercedes G-Class delivers significantly more torque with 1,164 Nm compared to 580 Nm. That’s about 584 Nm more.

A6 Limousine

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 Limousine is markedly lighter – 1,845 kg compared to 2,485 kg. The difference is around 640 kg.

Looking at boot space, the Mercedes G-Class offers clearly more boot space – 640 L compared to 492 L. That’s a difference of about 148 L.

When it comes to payload, the Mercedes G-Class carries a bit more – 715 kg compared to 625 kg. That’s a difference of about 90 kg.

Who wins the race in the data check?

The Audi A6 Limousine leads convincingly 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 £47,600
A6 Limousine

Audi A6 Limousine

  • Engine Type Petrol, Diesel MHEV, Petrol MHEV, Plugin Hybrid
  • Transmission Automatic
  • Drive Type Front-Wheel Drive, All-Wheel Drive
  • Power HP 204 - 367 HP
  • Consumption L/100km 2.2 - 7.3 L/100km
  • Electric Range 97 - 105 km
details

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View detailed analysis

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View detailed analysis

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Audi A6 Limousine

The Audi A6 cuts a clean, purposeful silhouette with an interior that feels like a quiet, high-tech office on wheels—luxurious materials and clever gadgets make long journeys surprisingly pleasant. It balances composed, confident driving with enough flair to keep you entertained, making it a sensible choice for buyers who want executive polish without showing off.

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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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Audi A6 Limousine
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Costs and Consumption
Price
47,600 - 68,100 £
Price
106,600 - 171,000 £
Consumption L/100km
2.2 - 7.3 L/100km
Consumption L/100km
8.7 - 14.7 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
28 kWh/100km
Electric Range
97 - 105 km
Electric Range
479 km
Battery Capacity
-
Battery Capacity
-
co2
49 - 166 g/km
co2
0 - 336 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Sedan
Body Type
Off-Roader
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
1,845 - 2,220 kg
Curb weight
2,485 - 3,085 kg
Trunk capacity
354 - 492 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 - 625 kg
Payload
115 - 715 kg

Engine and Performance
Engine Type
Petrol, Diesel MHEV, Petrol 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 - 8.2 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
What drivetrain options does the Audi A6 Limousine have?

Available configurations include 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.