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Mercedes A Class vs Audi A3 Limousine comparison

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

Mercedes A Class vs Audi A3 Limousine: Key differences

Mercedes A Class

3.6 (2 Reviews)
rate
  • marginally more power
  • clearly more efficient
details

Audi A3 Limousine

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

A Class

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.

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.

A3 Limousine

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 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 barely 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.

A Class

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 barely lighter – 1,345 kg compared to 1,440 kg. The difference is around 95 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 Audi A3 Limousine carries marginally more – 520 kg compared to 485 kg. That’s a difference of about 35 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 Petrol MHEV, Diesel, Plugin Hybrid, 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
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Frequently compared as well

Mercedes A Class
Mercedes B Class
VS
The Mercedes A‑Class is the sporty, tech‑savvy compact that thrills with sharp handling and a slick cockpit, while the Mercedes B‑Class trades a bit of attitude for towering practicality, roomier seats and a more useful boot. Choose the A‑Class if you want driving fun and style; pick the B‑Class if …
Mercedes A Class
Mercedes GLA
VS
The Mercedes A‑Class is the sharper, more driver-focused hatch that feels nimble and refined on twisty roads, while the Mercedes GLA trades a bit of agility for SUV practicality with a higher ride height, extra luggage space and a commanding view of the road. Pick the A‑Class for sporty handling, …
Mercedes A Class
Audi A3 Limousine

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

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.

details
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Reviews Mercedes A Class

3.6 (2 Reviews)
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Koldo
14 Jul 2026, 15:39:26

It's an elegant and understated car. Excellent material finishes; its two screens are very convenient for driving. Very good acceleration and braking response, great stability and good handling in corners. Good nighttime lighting, a safe, comfortable car and a pleasure to drive and travel in. My car is the A‑Class 200d. Kind regards.

How do you mainly use this car? (optional): Leisure / Weekend driver
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money

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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A202500_overfull
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A202576_overfull

Reviews Audi A3 Limousine

No reviews yet. Share your experience and help others decide.

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Mercedes A Class
Nissan Qashqai
VS
In the battle of sophistication versus practicality, the Mercedes A-Klasse and Nissan Qashqai cater to distinctly different tastes. The Mercedes A-Klasse, with its premium finishes and cutting-edge technology, appeals to those who crave luxury and performance in a compact form. Meanwhile, the …
Audi A3 Sportback
Audi A3 Limousine
VS
In a head-to-head comparison of the Audi A3 Sportback and Audi A3 Limousine, both models showcase the brand's commitment to luxury and performance, yet cater to slightly different preferences. The Sportback impresses with its versatile hatchback design, offering enhanced cargo space and …
Mercedes A Class
MINI MINI
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Mercedes A Class
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Mercedes A Class
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Mercedes A Class
Audi A3 Limousine

Costs and Consumption
Price
32,600 - 66,500 £
Price
27,700 - 94,300 £
Consumption L/100km
2.3 - 9 L/100km
Consumption L/100km
4.4 - 9.2 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
85 km
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
53 - 205 g/km
co2
115 - 208 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Hatchback
Body Type
Sedan
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
1,440 - 1,695 kg
Curb weight
1,345 - 1,640 kg
Trunk capacity
310 - 350 L
Trunk capacity
321 - 425 L
Length
-
Length
-
Width
1,796 - 1,850 mm
Width
1,816 - 1,851 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
450 - 485 kg
Payload
415 - 520 kg

Engine and Performance
Engine Type
Petrol MHEV, Diesel, Plugin Hybrid, Petrol
Engine Type
Petrol, Petrol MHEV, Diesel
Transmission
Automatic
Transmission
Manuel, Automatic
Transmission Detail
Dual-Clutch Automatic
Transmission Detail
Manual Gearbox, Dual-Clutch Automatic
Drive Type
Front-Wheel Drive, All-Wheel Drive
Drive Type
Front-Wheel Drive, All-Wheel Drive
Power HP
116 - 421 HP
Power HP
116 - 400 HP
Acceleration 0-100km/h
3.9 - 9.7 s
Acceleration 0-100km/h
3.8 - 10.1 s
Max Speed
-
Max Speed
-
Torque
200 - 500 Nm
Torque
220 - 500 Nm
Number of Cylinders
4
Number of Cylinders
4 - 5
Power kW
85 - 310 kW
Power kW
85 - 294 kW
Engine capacity
1,332 - 1,991 cm3
Engine capacity
1,498 - 2,480 cm3

General
Model Year
2025
Model Year
2,025 - 2,026
CO2 Efficiency Class
D, E, B, G
CO2 Efficiency Class
D, C, E, G
Brand
Mercedes-Benz
Brand
Audi
Is the Mercedes A Class offered with different drivetrains?

The Mercedes A Class is offered with 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.