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Audi A3 Limousine vs Mercedes A Class comparison

Compare performance (400 HP vs 421 HP), boot space and price (27,700 £ vs 32,600 £ ) at a glance. Find out which car is the better choice for you – Audi A3 Limousine or Mercedes A Class?

Audi A3 Limousine vs Mercedes A Class: Key differences

Audi A3 Limousine

  • a bit cheaper
  • very slightly quicker 0–100 km/h
  • very slightly lighter
  • moderately more trunk space

Mercedes A Class

  • marginally more power
  • clearly more efficient

By Achim Sedelmaier

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

A3 Limousine

Costs and Efficiency:

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

Audi A3 Limousine is a bit cheaper – starting at 27,700 £ , while the Mercedes A Class costs 32,600 £ . That’s a price difference of around 4,883 £.

Fuel consumption also shows a difference: the Mercedes A Class uses 2.3 L/100km and is clearly more efficient than the Audi A3 Limousine with 4.4 L/100km. The difference is about 2.1 L/100km.

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 Mercedes A Class offers marginally more power – delivering 421 HP compared to 400 HP. That’s roughly 21 HP more horsepower.

When accelerating from 0 to 100 km/h, the Audi A3 Limousine is very slightly quicker – completing the sprint in 3.8 s, while the Mercedes A Class takes 3.9 s. That’s about 0.1 s quicker.

Both models offer the same torque – 500 Nm.

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.

Both vehicles offer seating for 5 people.

In terms of curb weight, Audi A3 Limousine is very slightly lighter – 1,360 kg compared to 1,440 kg. The difference is around 80 kg.

Looking at boot space, the Audi A3 Limousine offers moderately more boot space – 425 L compared to 350 L. That’s a difference of about 75 L.

When it comes to payload, the Mercedes A Class carries very slightly more – 485 kg compared to 480 kg. That’s a difference of about 5 kg.

Who wins the race in the data check?

The Mercedes A Class stands well ahead of its rival 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 £32,600
A Class

Mercedes A Class

  • Engine Type : Plugin Hybrid, Petrol MHEV, Diesel, Petrol
  • Transmission : Automatic
  • Drive Type : Front-Wheel Drive, All-Wheel Drive
  • Power HP : 116 - 421 HP
  • Consumption L/100km : 2.3 - 9 L/100km
  • Electric Range : 85 km
details

Frequently compared as well

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Audi A3 Limousine
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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 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 Mercedes A Class

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Audi A3 Limousine
Mercedes A Class

Costs and Consumption
Price
27,700 - 58,300 £
Price
32,600 - 66,500 £
Consumption L/100km
4.4 - 9.2 L/100km
Consumption L/100km
2.3 - 9 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
85 km
Battery Capacity
-
Battery Capacity
12.9 kWh
co2
115 - 208 g/km
co2
53 - 205 g/km
Fuel tank capacity
-
Fuel tank capacity
35 L

Dimensions and Body
Body Type
Sedan
Body Type
Hatchback
Seats
5
Seats
5
Doors
-
Doors
5
Curb weight
1,360 - 1,640 kg
Curb weight
1,440 - 1,695 kg
Trunk capacity
321 - 425 L
Trunk capacity
310 - 350 L
Length
-
Length
4,428 mm
Width
1,816 - 1,851 mm
Width
1,796 - 1,850 mm
Height
-
Height
1,423 mm
Max trunk capacity
-
Max trunk capacity
1,125 L
Payload
415 - 480 kg
Payload
450 - 485 kg

Engine and Performance
Engine Type
Petrol, Petrol MHEV, Diesel
Engine Type
Plugin Hybrid, Petrol MHEV, Diesel, Petrol
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 - 421 HP
Acceleration 0-100km/h
3.8 - 10.1 s
Acceleration 0-100km/h
3.9 - 9.7 s
Max Speed
-
Max Speed
225 km/h
Torque
220 - 500 Nm
Torque
200 - 500 Nm
Number of Cylinders
4 - 5
Number of Cylinders
4
Power kW
85 - 294 kW
Power kW
85 - 310 kW
Engine capacity
1,498 - 2,480 cm3
Engine capacity
1,332 - 1,991 cm3

General
Model Year
2,025
Model Year
2,024 - 2,025
CO2 Efficiency Class
D, C, E, G
CO2 Efficiency Class
B, D, E, 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.