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Audi A4 Avant vs Mercedes GLS comparison

Compare performance (470 HP vs 404 HP), boot space and price (37,200 £ vs 92,700 £ ) at a glance. Find out which car is the better choice for you – Audi A4 Avant or Mercedes GLS?

Audi A4 Avant vs Mercedes GLS: Key differences

Audi A4 Avant

5 (1 Reviews)
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  • significantly cheaper
  • moderately more power
  • substantially more efficient
  • clearly quicker 0–100 km/h
  • substantially lighter
  • noticeably more trunk space
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Mercedes GLS

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By Achim Sedelmaier

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

A4 Avant

Costs and Efficiency:

Price and efficiency are key factors when choosing a car – and this is often where the real differences emerge.

Audi A4 Avant is significantly cheaper – starting at 37,200 £ , while the Mercedes GLS costs 92,700 £ . That’s a price difference of around 55,420 £.

Fuel consumption also shows a difference: the Audi A4 Avant uses 4.8 L/100km and is substantially more efficient than the Mercedes GLS with 7.9 L/100km. The difference is about 3.1 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 Audi A4 Avant offers moderately more power – delivering 470 HP compared to 404 HP. That’s roughly 66 HP more horsepower.

When accelerating from 0 to 100 km/h, the Audi A4 Avant is clearly quicker – completing the sprint in 3.7 s, while the Mercedes GLS takes 5.6 s. That’s about 1.9 s quicker.

There’s also a difference in torque: the Mercedes GLS delivers somewhat more torque with 750 Nm compared to 600 Nm. That’s about 150 Nm more.

A4 Avant

Space and Everyday Use:

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

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

In terms of curb weight, Audi A4 Avant is substantially lighter – 1,595 kg compared to 2,580 kg. The difference is around 985 kg.

Looking at boot space, the Audi A4 Avant offers noticeably more boot space – 495 L compared to 355 L. That’s a difference of about 140 L.

When it comes to payload, the Mercedes GLS carries clearly more – 820 kg compared to 565 kg. That’s a difference of about 255 kg.

Who wins the race in the data check?

The Audi A4 Avant 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 £37,200
A4 Avant

Audi A4 Avant

  • Engine Type Diesel MHEV, Petrol MHEV, Petrol
  • Transmission Automatic
  • Drive Type All-Wheel Drive, Front-Wheel Drive
  • Power HP 136 - 470 HP
  • Consumption L/100km 4.8 - 9.7 L/100km
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Frequently compared as well

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Audi A4 Avant
Mercedes GLS

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Audi A4 Avant

The Audi A4 Avant blends elegant, understated styling with practical estate versatility, making it a polished choice for drivers who want both poise and generous cargo space. Inside, the cabin feels premium and tech-forward while the composed driving manners turn routine journeys into a quietly satisfying experience—exactly the sensible indulgence buyers will appreciate.

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Reviews Audi A4 Avant

5 (1 Reviews)
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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

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Frequently compared as well

Audi A4 Avant
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Choosing between the Audi A4 Avant and the Audi Q5 is essentially a choice between a traditional estate with a lower, sportier ride and an SUV with higher seating and greater all-round space. The A4 Avant excels at on-road dynamics and efficient luggage use, while the Q5 prioritises cabin room, a …
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Audi A5 Avant
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Audi A4 Limousine
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Audi A4 Avant
Mercedes GLS

Costs and Consumption
Price
37,200 - 122,500 £
Price
92,700 - 104,600 £
Consumption L/100km
4.8 - 9.7 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
126 - 220 g/km
co2
206 - 226 g/km
Fuel tank capacity
40 - 58 L
Fuel tank capacity
-

Dimensions and Body
Body Type
Estate
Body Type
SUV
Seats
5
Seats
7
Doors
5
Doors
-
Curb weight
1,595 - 1,820 kg
Curb weight
2,580 - 2,670 kg
Trunk capacity
495 L
Trunk capacity
355 L
Length
4,750 - 4,782 mm
Length
-
Width
1,842 - 1,866 mm
Width
1,956 mm
Height
1,428 - 1,493 mm
Height
-
Max trunk capacity
1,495 L
Max trunk capacity
-
Payload
510 - 565 kg
Payload
810 - 820 kg

Engine and Performance
Engine Type
Diesel MHEV, Petrol MHEV, Petrol
Engine Type
Petrol MHEV, Diesel MHEV
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Dual-Clutch Automatic, Automatic Gearbox
Transmission Detail
Automatic Gearbox
Drive Type
All-Wheel Drive, Front-Wheel Drive
Drive Type
All-Wheel Drive
Power HP
136 - 470 HP
Power HP
336 - 404 HP
Acceleration 0-100km/h
3.7 - 9.8 s
Acceleration 0-100km/h
5.6 - 6.2 s
Max Speed
210 - 300 km/h
Max Speed
-
Torque
270 - 600 Nm
Torque
560 - 750 Nm
Number of Cylinders
4 - 6
Number of Cylinders
6
Power kW
100 - 346 kW
Power kW
247 - 297 kW
Engine capacity
1,968 - 2,894 cm3
Engine capacity
2,989 - 2,999 cm3

General
Model Year
2,023 - 2,024
Model Year
2026
CO2 Efficiency Class
E, F, D, G
CO2 Efficiency Class
G
Brand
Audi
Brand
Mercedes-Benz
What drivetrain options does the Audi A4 Avant have?

The Audi A4 Avant is available as 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.