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Audi A3 Limousine vs Mercedes GLS comparison

Compare performance (400 HP vs 404 HP), boot space and price (27,700 £ vs 92,700 £ ) at a glance. Find out which car is the better choice for you – Audi A3 Limousine or Mercedes GLS?

Audi A3 Limousine vs Mercedes GLS: Key differences

Audi A3 Limousine

  • considerably cheaper
  • considerably more efficient
  • substantially quicker 0–100 km/h
  • considerably lighter
  • slightly more trunk space
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Mercedes GLS

4.3 (1 Reviews)
rate
  • marginally more power
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Here’s where it gets real: The technical differences in detail

A3 Limousine

Costs and Efficiency:

When it comes to price and running costs, the biggest differences usually appear. This is often where you see which car fits your budget better in the long run.

Audi A3 Limousine is considerably cheaper – starting at 27,700 £ , while the Mercedes GLS costs 92,700 £ . That’s a price difference of around 64,977 £.

Fuel consumption also shows a difference: the Audi A3 Limousine uses 4.4 L/100km and is considerably more efficient than the Mercedes GLS with 7.9 L/100km. The difference is about 3.5 L/100km.

GLS

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 GLS offers marginally more power – delivering 404 HP compared to 400 HP. That’s roughly 4 HP more horsepower.

When accelerating from 0 to 100 km/h, the Audi A3 Limousine is substantially quicker – completing the sprint in 3.8 s, while the Mercedes GLS takes 5.6 s. That’s about 1.8 s quicker.

There’s also a difference in torque: the Mercedes GLS delivers markedly more torque with 750 Nm compared to 500 Nm. That’s about 250 Nm more.

A3 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.

Seats: Mercedes GLS offers more seats – 7 vs 5.

In terms of curb weight, Audi A3 Limousine is considerably lighter – 1,345 kg compared to 2,580 kg. The difference is around 1,235 kg.

Looking at boot space, the Audi A3 Limousine offers slightly more boot space – 425 L compared to 355 L. That’s a difference of about 70 L.

When it comes to payload, the Mercedes GLS carries markedly more – 820 kg compared to 520 kg. That’s a difference of about 300 kg.

Who wins the race in the data check?

The Audi A3 Limousine 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 £27,700
A3 Limousine

Audi A3 Limousine

  • Engine Type Petrol, Petrol MHEV, Diesel
  • Transmission Manual, Automatic
  • Drive Type Front-Wheel Drive, All-Wheel Drive
  • Power HP 116 - 400 HP
  • Consumption L/100km 4.4 - 9.2 L/100km
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Mercedes GLS

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Audi A3 Limousine

The Audi A3 sedan dresses up compact practicality in clean, premium lines, giving you the feel of an upscale small car with a proper boot. Inside it’s neat, driver-focused and nicely finished — a sensible, enjoyable daily companion that prefers poise over showy theatrics.

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Reviews Audi A3 Limousine

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Mercedes GLS

The GLS — usually just called the GLS — is Mercedes' flagship SUV, wrapping limousine-like comfort and commanding road presence into a smart, family-ready package. It pampers occupants with a hushed cabin, premium materials and intuitive tech, while still managing to feel confident and a little indulgent on the daily commute.

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Reviews Mercedes GLS

4.3 (1 Reviews)
rate

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

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Audi A3 Limousine
Mercedes GLS

Costs and Consumption
Price
27,700 - 94,300 £
Price
92,700 - 104,600 £
Consumption L/100km
4.4 - 9.2 L/100km
Consumption L/100km
7.9 - 9.9 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
115 - 208 g/km
co2
206 - 226 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Sedan
Body Type
SUV
Seats
5
Seats
7
Doors
-
Doors
-
Curb weight
1,345 - 1,640 kg
Curb weight
2,580 - 2,670 kg
Trunk capacity
321 - 425 L
Trunk capacity
355 L
Length
-
Length
-
Width
1,816 - 1,851 mm
Width
1,956 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
415 - 520 kg
Payload
810 - 820 kg

Engine and Performance
Engine Type
Petrol, Petrol MHEV, Diesel
Engine Type
Petrol MHEV, Diesel MHEV
Transmission
Manual, Automatic
Transmission
Automatic
Transmission Detail
Manual Gearbox, Dual-Clutch Automatic
Transmission Detail
Automatic Gearbox
Drive Type
Front-Wheel Drive, All-Wheel Drive
Drive Type
All-Wheel Drive
Power HP
116 - 400 HP
Power HP
336 - 404 HP
Acceleration 0-100km/h
3.8 - 10.1 s
Acceleration 0-100km/h
5.6 - 6.2 s
Max Speed
-
Max Speed
-
Torque
220 - 500 Nm
Torque
560 - 750 Nm
Number of Cylinders
4 - 5
Number of Cylinders
6
Power kW
85 - 294 kW
Power kW
247 - 297 kW
Engine capacity
1,498 - 2,480 cm3
Engine capacity
2,989 - 2,999 cm3

General
Model Year
2,025 - 2,026
Model Year
2026
CO2 Efficiency Class
D, C, E, G
CO2 Efficiency Class
G
Brand
Audi
Brand
Mercedes-Benz
What drive types are available for the Audi A3 Limousine?

The Audi A3 Limousine 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.