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Audi A5 Avant vs Mercedes GLA comparison

Compare performance (639 HP vs 421 HP), boot space and price (41,600 £ vs 38,800 £ ) at a glance. Find out which car is the better choice for you – Audi A5 Avant or Mercedes GLA?

Audi A5 Avant vs Mercedes GLA: Key differences

Audi A5 Avant

4.4 (1 Reviews)
rate
  • clearly more power
  • noticeably more efficient
  • markedly more electric range
  • a bit quicker 0–100 km/h
details

Mercedes GLA

4.5 (4 Reviews)
rate
  • barely cheaper
  • moderately lighter
  • somewhat more trunk space
details

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:

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.

Mercedes GLA is barely cheaper – starting at 38,800 £ , while the Audi A5 Avant costs 41,600 £ . That’s a price difference of around 2,778 £.

Fuel consumption also shows a difference: the Audi A5 Avant uses 2.1 L/100km and is noticeably more efficient than the Mercedes GLA with 2.9 L/100km. The difference is about 0.8 L/100km.

As for electric range, the Audi A5 Avant offers markedly more range – reaching up to 108 km, about 34 km more than the Mercedes GLA.

GLA

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 clearly more power – delivering 639 HP compared to 421 HP. That’s roughly 218 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 GLA takes 4.3 s. That’s about 0.6 s quicker.

There’s also a difference in torque: the Audi A5 Avant delivers noticeably more torque with 825 Nm compared to 500 Nm. That’s about 325 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, Mercedes GLA is moderately lighter – 1,570 kg compared to 1,785 kg. The difference is around 215 kg.

Looking at boot space, the Mercedes GLA offers somewhat more boot space – 435 L compared to 361 L. That’s a difference of about 74 L.

When it comes to payload, the Audi A5 Avant carries barely more – 535 kg compared to 500 kg. That’s a difference of about 35 kg.

Who wins the race in the data check?

The Audi A5 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 £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
details

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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 GLA

The Mercedes GLA is a compact luxury crossover that brings Mercedes-Benz's refined design and premium cabin materials into a practical, city-friendly package. It combines comfortable ride quality and intuitive tech with poised handling, making it a confident choice for everyday driving and longer journeys.

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Reviews Mercedes GLA

4.5 (4 Reviews)
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Lucien
1 May 2026, 07:12:24

GLA 180 petrol. Ideal for city and highway. Very smooth and quiet. The automatic gearbox is a delight. Average consumption 6.2 L/100 km. Special edition 180 Cyber Edition, leather seats....

How do you mainly use this car? (optional): Family car
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Value for Money
Gutter
24 Feb 2026, 21:53:27

Super nimble, very impressive power from this 1,300cc mild‑hybrid engine — in town, on the road and on the motorway for this 2025 GLA 180 Style AMG... premium interior!

How do you mainly use this car? (optional): Family car
Efficiency / Consumption & Range
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Serge
16 Jan 2026, 16:09:11

You have to compare like with like — the GLA should be compared to the Q3, not the Q2 as in your study!

How do you mainly use this car? (optional): Family car
Efficiency / Consumption & Range
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Driving Fun / Performance
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Audi A5 Avant
Mercedes GLA

Costs and Consumption
Price
41,600 - 92,400 £
Price
38,800 - 75,300 £
Consumption L/100km
2.1 - 7.7 L/100km
Consumption L/100km
2.9 - 9.5 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
83 - 108 km
Electric Range
74 km
Battery Capacity
-
Battery Capacity
-
co2
47 - 175 g/km
co2
66 - 216 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Estate
Body Type
SUV
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
1,785 - 2,445 kg
Curb weight
1,570 - 1,810 kg
Trunk capacity
361 L
Trunk capacity
385 - 435 L
Length
-
Length
-
Width
1,860 - 1,952 mm
Width
1,834 - 1,849 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
480 - 535 kg
Payload
480 - 500 kg

Engine and Performance
Engine Type
Plugin Hybrid, Petrol, Diesel MHEV, Petrol MHEV
Engine Type
Petrol MHEV, Plugin Hybrid, Diesel, Petrol
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Dual-Clutch Automatic, Automatic Gearbox
Transmission Detail
Dual-Clutch Automatic
Drive Type
All-Wheel Drive, Front-Wheel Drive
Drive Type
Front-Wheel Drive, All-Wheel Drive
Power HP
150 - 639 HP
Power HP
116 - 421 HP
Acceleration 0-100km/h
3.7 - 9.8 s
Acceleration 0-100km/h
4.3 - 11 s
Max Speed
-
Max Speed
-
Torque
280 - 825 Nm
Torque
230 - 500 Nm
Number of Cylinders
4 - 6
Number of Cylinders
4
Power kW
110 - 470 kW
Power kW
85 - 310 kW
Engine capacity
1,968 - 2,995 cm3
Engine capacity
1,332 - 1,991 cm3

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