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

Compare performance (400 HP vs 320 HP), boot space and price (27000 £ vs 32300 £ ) at a glance. Find out which car is the better choice for you – Audi A3 Sportback or Mercedes A Class?

Audi A3 Sportback

Mercedes A Class

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 to a small extent advantage in terms of price – it starts at 27000 £ , while the Mercedes A Class costs 32300 £ . That’s a price difference of around 5262 £.

Fuel consumption also shows a difference: Audi A3 Sportback manages with 1.10 L and is therefore decisively more efficient than the Mercedes A Class with 2.30 L. The difference is about 1.20 L per 100 km.

As for electric range, the Audi A3 Sportback performs distinct better – achieving up to 141 km, about 56 km more than the Mercedes A Class.

A Class

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 A3 Sportback has a somewhat 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 evident quicker – completing the sprint in 3.80 s, while the Mercedes A Class takes 4.70 s. That’s about 0.90 s faster.

In terms of top speed, the Mercedes A Class 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 hardly perceptible stronger with 500 Nm compared to 450 Nm. That’s about 50 Nm difference.

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A3 Sportback

Space and Everyday Use:

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

Both vehicles offer seating for 5 people.

In curb weight, Audi A3 Sportback is slight lighter – 1360 kg compared to 1440 kg. The difference is around 80 kg.

In terms of boot space, the Audi A3 Sportback offers slight more room – 380 L compared to 350 L. That’s a difference of about 30 L.

In maximum load capacity, the Mercedes A Class performs barely noticeable better – up to 1190 L, which is about 90 L more than the Audi A3 Sportback.

When it comes to payload, Mercedes A Class barely noticeable takes the win – 485 kg compared to 480 kg. That’s a difference of about 5 kg.

Who wins the race in the data check?

The Audi A3 Sportback is decisively ahead 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

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

The Mercedes A‑Class arrives as a compact charmer that dresses premium materials and a cockpit full of screens in a tidy, city-friendly package, delivering surprising agility and poise. For buyers who want a luxury badge, clever tech and a car that's equally happy in tight streets or on a spirited country run, the A‑Class offers a grown-up feel with a cheeky streak.

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Reviews Audi A3 Sportback

Reviews Mercedes A Class

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Mercedes A Class

Costs and Consumption
Price
27000 - 56600 £
Price
32300 - 55600 £
Consumption L/100km
1.1 - 9.3 L
Consumption L/100km
2.3 - 8.3 L
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
134 - 141 km
Electric Range
85 km
Battery Capacity
19.70 kWh
Battery Capacity
12.90 kWh
co2
25 - 211 g/km
co2
53 - 188 g/km
Fuel tank capacity
40 L
Fuel tank capacity
35 - 51 L

Dimensions and Body
Body Type
Hatchback
Body Type
Hatchback
Seats
5
Seats
5
Doors
5
Doors
5
Curb weight
1360 - 1685 kg
Curb weight
1440 - 1695 kg
Trunk capacity
280 - 380 L
Trunk capacity
310 - 350 L
Length
4352 - 4353 mm
Length
4428 - 4447 mm
Width
1816 - 1851 mm
Width
1796 mm
Height
1441 - 1470 mm
Height
1407 - 1423 mm
Max trunk capacity
1100 L
Max trunk capacity
1125 - 1190 L
Payload
410 - 480 kg
Payload
475 - 485 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
4.7 - 9.7 s
Max Speed
225 - 237 km/h
Max Speed
202 - 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, E, G
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.