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Audi A3 Sportback vs Mercedes G-Class comparison

Compare performance (400 HP vs 605 HP), boot space and price (27,000 £ vs 106,600 £ ) at a glance. Find out which car is the better choice for you – Audi A3 Sportback or Mercedes G-Class?

Audi A3 Sportback vs Mercedes G-Class: Key differences

Audi A3 Sportback

3.9 (1 Reviews)
rate
  • significantly cheaper
  • substantially more efficient
  • somewhat quicker 0–100 km/h
  • substantially lighter
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Mercedes G-Class

  • clearly more power
  • substantially more electric range
  • considerably more trunk space
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By Achim Sedelmaier

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

A3 Sportback

Costs and Efficiency:

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

Audi A3 Sportback is significantly cheaper – starting at 27,000 £ , while the Mercedes G-Class costs 106,600 £ . That’s a price difference of around 79,590 £.

Fuel consumption also shows a difference: the Audi A3 Sportback uses 1.1 L/100km and is substantially more efficient than the Mercedes G-Class with 8.7 L/100km. The difference is about 7.6 L/100km.

As for electric range, the Mercedes G-Class offers substantially more range – reaching up to 479 km, about 338 km more than the Audi A3 Sportback.

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 400 HP. That’s roughly 205 HP more horsepower.

When accelerating from 0 to 100 km/h, the Audi A3 Sportback is somewhat quicker – completing the sprint in 3.8 s, while the Mercedes G-Class takes 4.4 s. That’s about 0.6 s quicker.

There’s also a difference in torque: the Mercedes G-Class delivers substantially more torque with 1,164 Nm compared to 500 Nm. That’s about 664 Nm more.

A3 Sportback

Space and Everyday Use:

Cabin size, boot volume and payload all play a role in everyday practicality. Here, comfort and flexibility make the difference.

Both vehicles offer seating for 5 people.

In terms of curb weight, Audi A3 Sportback is substantially lighter – 1,360 kg compared to 2,485 kg. The difference is around 1,125 kg.

Looking at boot space, the Mercedes G-Class offers considerably more boot space – 640 L compared to 380 L. That’s a difference of about 260 L.

When it comes to payload, the Mercedes G-Class carries visibly more – 715 kg compared to 480 kg. That’s a difference of about 235 kg.

Who wins the race in the data check?

The Audi A3 Sportback is far ahead 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 £27,000
A3 Sportback

Audi A3 Sportback

  • Engine Type : Petrol, Petrol MHEV, Diesel, Plugin Hybrid
  • Transmission : Manuel, Automatic
  • Drive Type : Front-Wheel Drive, All-Wheel Drive
  • Power HP : 116 - 400 HP
  • Consumption L/100km : 1.1 - 9.3 L/100km
  • Electric Range : 134 - 141 km
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Frequently compared as well

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Mercedes G-Class

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Audi A3 Sportback

The Audi A3 Sportback wraps premium materials and crisp German design into a practical hatchback package that makes daily driving feel smart rather than showy. It’s nimble in the city, composed on longer trips, and carries just enough swagger to satisfy buyers who want quality without shouting about it.

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Reviews Audi A3 Sportback

3.9 (1 Reviews)
rate

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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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Reviews Mercedes G-Class

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Audi A3 Sportback
Mercedes G-Class

Costs and Consumption
Price
27,000 - 92,900 £
Price
106,600 - 171,000 £
Consumption L/100km
1.1 - 9.3 L/100km
Consumption L/100km
8.7 - 14.7 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
28 kWh/100km
Electric Range
134 - 141 km
Electric Range
479 km
Battery Capacity
-
Battery Capacity
-
co2
25 - 211 g/km
co2
0 - 336 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Hatchback
Body Type
Off-Roader
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
1,360 - 1,685 kg
Curb weight
2,485 - 3,085 kg
Trunk capacity
280 - 380 L
Trunk capacity
640 L
Length
-
Length
-
Width
1,816 - 1,851 mm
Width
1,931 - 1,984 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
410 - 480 kg
Payload
115 - 715 kg

Engine and Performance
Engine Type
Petrol, Petrol MHEV, Diesel, Plugin Hybrid
Engine Type
Petrol MHEV, Diesel MHEV, Electric
Transmission
Manuel, Automatic
Transmission
Automatic
Transmission Detail
Manual Gearbox, Dual-Clutch Automatic
Transmission Detail
Automatic Gearbox, Reduction Gearbox
Drive Type
Front-Wheel Drive, All-Wheel Drive
Drive Type
All-Wheel Drive
Power HP
116 - 400 HP
Power HP
387 - 605 HP
Acceleration 0-100km/h
3.8 - 10.1 s
Acceleration 0-100km/h
4.4 - 5.8 s
Max Speed
-
Max Speed
-
Torque
220 - 500 Nm
Torque
760 - 1,164 Nm
Number of Cylinders
4 - 5
Number of Cylinders
6 - 8
Power kW
85 - 294 kW
Power kW
285 - 445 kW
Engine capacity
1,498 - 2,480 cm3
Engine capacity
2,989 - 3,982 cm3

General
Model Year
2,025 - 2,026
Model Year
2,025 - 2,026
CO2 Efficiency Class
D, F, E, G, B
CO2 Efficiency Class
G, A
Brand
Audi
Brand
Mercedes-Benz
What drive types are available for the Audi A3 Sportback?

The Audi A3 Sportback is available as 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.