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Audi A3 Sportback vs Mercedes A Class Saloon - Differences and prices compared

Compare performance (400 HP vs 320 HP), boot space and price (27000 £ vs 32700 £ ) at a glance. Find out which car is the better choice for you – Audi A3 Sportback or Mercedes A Class Saloon?

Audi A3 Sportback

Mercedes A Class Saloon

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 has a clearly perceptible advantage in terms of price – it starts at 27000 £ , while the Mercedes A Class Saloon costs 32700 £ . That’s a price difference of around 5721 £.

Fuel consumption also shows a difference: Mercedes A Class Saloon manages with 0.70 L and is therefore clearly more efficient than the Audi A3 Sportback with 1.10 L. The difference is about 0.40 L per 100 km.

As for electric range, the Audi A3 Sportback performs evident better – achieving up to 141 km, about 53 km more than the Mercedes A Class Saloon.

A Class Saloon

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 Audi A3 Sportback has a a bit edge – offering 400 HP compared to 320 HP. That’s roughly 80 HP more horsepower.

In acceleration from 0 to 100 km/h, the Audi A3 Sportback is noticeable quicker – completing the sprint in 3.80 s, while the Mercedes A Class Saloon takes 4.80 s. That’s about 1 s faster.

In terms of top speed, the Mercedes A Class Saloon performs minimal better – reaching 250 km/h, while the Audi A3 Sportback tops out at 237 km/h. The difference is around 13 km/h.

There’s also a difference in torque: Audi A3 Sportback pulls minimal stronger with 500 Nm compared to 450 Nm. That’s about 50 Nm difference.

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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.

Both vehicles offer seating for 5 people.

In curb weight, Audi A3 Sportback is hardly perceptible lighter – 1360 kg compared to 1450 kg. The difference is around 90 kg.

In terms of boot space, the Mercedes A Class Saloon offers hardly perceptible more room – 395 L compared to 380 L. That’s a difference of about 15 L.

When it comes to payload, Mercedes A Class Saloon hardly perceptible takes the win – 490 kg compared to 480 kg. That’s a difference of about 10 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.

Audi A3 Sportback
Mercedes A Class Saloon

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis
from about £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
  • Electric Range : 134 - 141 km
details

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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Mercedes A Class Saloon

The Mercedes A‑Class Saloon blends compact practicality with premium flair, wrapping a surprisingly spacious interior in a slick, modern package that feels more grown-up than its hatchback sibling. It’s an ideal choice for city drivers who want Mercedes polish and cutting-edge tech without the ostentation of a larger saloon, and it even manages to make the daily commute feel a little bit special.

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Reviews Audi A3 Sportback

Reviews Mercedes A Class Saloon

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Costs and Consumption
Price
27000 - 56600 £
Price
32700 - 55900 £
Consumption L/100km
1.1 - 9.3 L
Consumption L/100km
0.7 - 8.1 L
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
134 - 141 km
Electric Range
88 km
Battery Capacity
19.70 kWh
Battery Capacity
12.90 kWh
co2
25 - 211 g/km
co2
16 - 184 g/km
Fuel tank capacity
40 L
Fuel tank capacity
35 - 51 L

Dimensions and Body
Body Type
Hatchback
Body Type
Sedan
Seats
5
Seats
5
Doors
5
Doors
4
Curb weight
1360 - 1685 kg
Curb weight
1450 - 1705 kg
Trunk capacity
280 - 380 L
Trunk capacity
345 - 395 L
Length
4352 - 4353 mm
Length
4558 - 4570 mm
Width
1816 - 1851 mm
Width
1796 mm
Height
1441 - 1470 mm
Height
1413 - 1429 mm
Max trunk capacity
1100 L
Max trunk capacity
-
Payload
410 - 480 kg
Payload
475 - 490 kg

Engine and Performance
Engine Type
Petrol, Petrol MHEV, Diesel, Plugin Hybrid
Engine Type
Plugin Hybrid, Petrol MHEV, Diesel
Transmission
Manuel, Automatic
Transmission
Automatic
Transmission Detail
Manual Gearbox, Dual-Clutch Automatic
Transmission Detail
Dual-Clutch Automatic
Drive Type
Front-Wheel Drive, All-Wheel Drive
Drive Type
Front-Wheel Drive, All-Wheel Drive
Power HP
116 - 400 HP
Power HP
116 - 320 HP
Acceleration 0-100km/h
3.8 - 10.1 s
Acceleration 0-100km/h
4.8 - 9.9 s
Max Speed
225 - 237 km/h
Max Speed
206 - 250 km/h
Torque
220 - 500 Nm
Torque
200 - 450 Nm
Number of Cylinders
4 - 5
Number of Cylinders
4
Power kW
85 - 294 kW
Power kW
85 - 235 kW
Engine capacity
1498 - 2480 cm3
Engine capacity
1332 - 1991 cm3

General
Model Year
2025
Model Year
2024 - 2025
CO2 Efficiency Class
D, F, E, G, B
CO2 Efficiency Class
B, D, G, E
Brand
Audi
Brand
Mercedes-Benz

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What drive types are available for the Audi A3 Sportback?

The Audi A3 Sportback is offered with Front-Wheel Drive or All-Wheel Drive.

The prices shown are estimates based on German list prices, adjusted for local VAT. Local registration taxes (e.g. NoVA, BPM or CO2 malus) are not included. This information is not legally binding.