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Audi A3 Sportback vs Mercedes AMG GT comparison

Compare performance (400 HP vs 816 HP), boot space and price (27,000 £ vs 102,500 £ ) at a glance. Find out which car is the better choice for you – Audi A3 Sportback or Mercedes AMG GT?

Audi A3 Sportback vs Mercedes AMG GT: Key differences

Audi A3 Sportback

4.1 (2 Reviews)
rate
  • clearly cheaper
  • clearly more efficient
  • clearly more electric range
  • markedly lighter
  • a bit more trunk space
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Mercedes AMG GT

  • considerably more power
  • noticeably quicker 0–100 km/h
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By Achim Sedelmaier

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

A3 Sportback

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 A3 Sportback is clearly cheaper – starting at 27,000 £ , while the Mercedes AMG GT costs 102,500 £ . That’s a price difference of around 75,504 £.

Fuel consumption also shows a difference: the Audi A3 Sportback uses 1.1 L/100km and is clearly more efficient than the Mercedes AMG GT with 10.3 L/100km. The difference is about 9.2 L/100km.

As for electric range, the Audi A3 Sportback offers clearly more range – reaching up to 141 km, about 130 km more than the Mercedes AMG GT.

AMG GT

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 AMG GT offers considerably more power – delivering 816 HP compared to 400 HP. That’s roughly 416 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes AMG GT is noticeably quicker – completing the sprint in 2.8 s, while the Audi A3 Sportback takes 3.8 s. That’s about 1 s quicker.

There’s also a difference in torque: the Mercedes AMG GT delivers significantly more torque with 1,420 Nm compared to 500 Nm. That’s about 920 Nm more.

A3 Sportback

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.

Seats: Audi A3 Sportback offers more seats – 5 vs 2.

In terms of curb weight, Audi A3 Sportback is markedly lighter – 1,360 kg compared to 1,790 kg. The difference is around 430 kg.

Looking at boot space, the Audi A3 Sportback offers a bit more boot space – 380 L compared to 321 L. That’s a difference of about 59 L.

When it comes to payload, the Audi A3 Sportback carries substantially more – 480 kg compared to 215 kg. That’s a difference of about 265 kg.

Who wins the race in the data check?

The Audi A3 Sportback 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 £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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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

4.1 (2 Reviews)
rate

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

Mercedes AMG GT

The Mercedes-AMG GT is a theatrical sports car with prowling looks and an aggressive exhaust note that announces its intentions the moment it fires up. It pairs ferocious performance with surprising everyday usability — a taut yet forgiving chassis and a cockpit that feels special — making sensible buyers suddenly very good at justifying indulgence.

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Reviews Mercedes AMG GT

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

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Mercedes AMG GT

Costs and Consumption
Price
27,000 - 92,900 £
Price
102,500 - 194,400 £
Consumption L/100km
1.1 - 9.3 L/100km
Consumption L/100km
10.3 - 14 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
134 - 141 km
Electric Range
11 km
Battery Capacity
-
Battery Capacity
-
co2
25 - 211 g/km
co2
235 - 319 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Hatchback
Body Type
Coupe
Seats
5
Seats
2
Doors
-
Doors
-
Curb weight
1,360 - 1,685 kg
Curb weight
1,790 - 2,195 kg
Trunk capacity
280 - 380 L
Trunk capacity
182 - 321 L
Length
-
Length
-
Width
1,816 - 1,851 mm
Width
1,929 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
410 - 480 kg
Payload
170 - 215 kg

Engine and Performance
Engine Type
Petrol, Petrol MHEV, Diesel, Plugin Hybrid
Engine Type
Petrol MHEV, Petrol, Plugin Hybrid
Transmission
Manuel, Automatic
Transmission
Automatic
Transmission Detail
Manual Gearbox, Dual-Clutch Automatic
Transmission Detail
Automatic Gearbox
Drive Type
Front-Wheel Drive, All-Wheel Drive
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Power HP
116 - 400 HP
Power HP
435 - 816 HP
Acceleration 0-100km/h
3.8 - 10.1 s
Acceleration 0-100km/h
2.8 - 4.6 s
Max Speed
-
Max Speed
-
Torque
220 - 500 Nm
Torque
500 - 1,420 Nm
Number of Cylinders
4 - 5
Number of Cylinders
4 - 8
Power kW
85 - 294 kW
Power kW
320 - 600 kW
Engine capacity
1,498 - 2,480 cm3
Engine capacity
1,991 - 3,982 cm3

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