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Audi A5 Avant vs Mercedes G-Class comparison

Compare performance (639 HP vs 605 HP), boot space and price (41,600 £ vs 106,600 £ ) at a glance. Find out which car is the better choice for you – Audi A5 Avant or Mercedes G-Class?

Audi A5 Avant vs Mercedes G-Class: Key differences

Audi A5 Avant

4.4 (1 Reviews)
rate
  • considerably cheaper
  • very slightly more power
  • considerably more efficient
  • a bit quicker 0–100 km/h
  • markedly lighter
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Mercedes G-Class

  • clearly more electric range
  • clearly more trunk space
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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

A5 Avant

Costs and Efficiency:

Price and efficiency are often the first things buyers look at. Here it becomes clear which model has the long-term edge – whether at the pump, the plug, or in purchase price.

Audi A5 Avant is considerably cheaper – starting at 41,600 £ , while the Mercedes G-Class costs 106,600 £ . That’s a price difference of around 64,976 £.

Fuel consumption also shows a difference: the Audi A5 Avant uses 2.1 L/100km and is considerably more efficient than the Mercedes G-Class with 8.7 L/100km. The difference is about 6.6 L/100km.

As for electric range, the Mercedes G-Class offers clearly more range – reaching up to 479 km, about 371 km more than the Audi A5 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 Audi A5 Avant offers very slightly more power – delivering 639 HP compared to 605 HP. That’s roughly 34 HP more horsepower.

When accelerating from 0 to 100 km/h, the Audi A5 Avant is a bit quicker – completing the sprint in 3.7 s, while the Mercedes G-Class takes 4.4 s. That’s about 0.7 s quicker.

There’s also a difference in torque: the Mercedes G-Class delivers noticeably more torque with 1,164 Nm compared to 825 Nm. That’s about 339 Nm more.

A5 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 A5 Avant is markedly lighter – 1,785 kg compared to 2,485 kg. The difference is around 700 kg.

Looking at boot space, the Mercedes G-Class offers clearly more boot space – 640 L compared to 361 L. That’s a difference of about 279 L.

When it comes to payload, the Mercedes G-Class carries markedly more – 715 kg compared to 535 kg. That’s a difference of about 180 kg.

Who wins the race in the data check?

The Audi A5 Avant is clearly superior overall 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 £41,600
A5 Avant

Audi A5 Avant

  • Engine Type Plugin Hybrid, Petrol, Diesel MHEV, Petrol MHEV
  • Transmission Automatic
  • Drive Type All-Wheel Drive, Front-Wheel Drive
  • Power HP 150 - 639 HP
  • Consumption L/100km 2.1 - 7.7 L/100km
  • Electric Range 83 - 108 km
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Frequently compared as well

Audi A5 Avant
Audi A6 Avant
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Audi A5 Avant
Mercedes G-Class

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Audi A5 Avant

The Audi A5 Avant dresses like a sleek coupe but carries like a sensible estate, offering buyers a rare blend of glamour and everyday practicality. Inside, the cabin feels beautifully sorted and the drive is composed and engaging, making routine errands feel a touch more enjoyable than they have any right to be.

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Reviews Audi A5 Avant

4.4 (1 Reviews)
rate
Hje
10 May 2026, 10:01:51

I do a lot of highway and generally long distance driving where A5 is superior to BMW 3.

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

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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18C0997_133
19C0473_066
18C0997_262

Reviews Mercedes G-Class

No reviews yet. Share your experience and help others decide.

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Mercedes G-Class

Costs and Consumption
Price
41,600 - 92,400 £
Price
106,600 - 171,000 £
Consumption L/100km
2.1 - 7.7 L/100km
Consumption L/100km
8.7 - 14.7 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
28 kWh/100km
Electric Range
83 - 108 km
Electric Range
479 km
Battery Capacity
-
Battery Capacity
-
co2
47 - 175 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
1,785 - 2,445 kg
Curb weight
2,485 - 3,085 kg
Trunk capacity
361 L
Trunk capacity
640 L
Length
-
Length
-
Width
1,860 - 1,952 mm
Width
1,931 - 1,984 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
480 - 535 kg
Payload
115 - 715 kg

Engine and Performance
Engine Type
Plugin Hybrid, Petrol, Diesel MHEV, Petrol MHEV
Engine Type
Petrol MHEV, Diesel MHEV, Electric
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Dual-Clutch Automatic, Automatic Gearbox
Transmission Detail
Automatic Gearbox, Reduction Gearbox
Drive Type
All-Wheel Drive, Front-Wheel Drive
Drive Type
All-Wheel Drive
Power HP
150 - 639 HP
Power HP
387 - 605 HP
Acceleration 0-100km/h
3.7 - 9.8 s
Acceleration 0-100km/h
4.4 - 5.8 s
Max Speed
-
Max Speed
-
Torque
280 - 825 Nm
Torque
760 - 1,164 Nm
Number of Cylinders
4 - 6
Number of Cylinders
6 - 8
Power kW
110 - 470 kW
Power kW
285 - 445 kW
Engine capacity
1,968 - 2,995 cm3
Engine capacity
2,989 - 3,982 cm3

General
Model Year
2,025 - 2,026
Model Year
2,025 - 2,026
CO2 Efficiency Class
B, E, F, D
CO2 Efficiency Class
G, A
Brand
Audi
Brand
Mercedes-Benz
What drive types are available for the Audi A5 Avant?

Available configurations include All-Wheel Drive or Front-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.