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Audi A3 Limousine vs Mercedes B Class comparison

Compare performance (400 HP vs 238 HP), boot space and price (27,700 £ vs 33,100 £ ) at a glance. Find out which car is the better choice for you – Audi A3 Limousine or Mercedes B Class?

Audi A3 Limousine vs Mercedes B Class: Key differences

Audi A3 Limousine

  • somewhat cheaper
  • significantly more power
  • somewhat more efficient
  • clearly quicker 0–100 km/h
  • very slightly lighter
details

Mercedes B Class

4.9 (5 Reviews)
rate
  • barely 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

A3 Limousine

Costs and Efficiency:

Looking at overall running costs, both models reveal some interesting differences in everyday economy.

Audi A3 Limousine is somewhat cheaper – starting at 27,700 £ , while the Mercedes B Class costs 33,100 £ . That’s a price difference of around 5,444 £.

Fuel consumption also shows a difference: the Audi A3 Limousine uses 4.4 L/100km and is somewhat more efficient than the Mercedes B Class with 5.1 L/100km. The difference is about 0.7 L/100km.

B Class

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 A3 Limousine offers significantly more power – delivering 400 HP compared to 238 HP. That’s roughly 162 HP more horsepower.

When accelerating from 0 to 100 km/h, the Audi A3 Limousine is clearly quicker – completing the sprint in 3.8 s, while the Mercedes B Class takes 6.5 s. That’s about 2.7 s quicker.

There’s also a difference in torque: the Audi A3 Limousine delivers slightly more torque with 500 Nm compared to 400 Nm. That’s about 100 Nm more.

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 1,405 kg. The difference is around 45 kg.

Looking at boot space, the Mercedes B Class offers barely more boot space – 455 L compared to 425 L. That’s a difference of about 30 L.

When it comes to payload, the Mercedes B Class carries slightly more – 550 kg compared to 480 kg. That’s a difference of about 70 kg.

Who wins the race in the data check?

The Audi A3 Limousine 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 £27,700
A3 Limousine

Audi A3 Limousine

  • Engine Type : Petrol, Petrol MHEV, Diesel
  • Transmission : Manuel, Automatic
  • Drive Type : Front-Wheel Drive, All-Wheel Drive
  • Power HP : 116 - 400 HP
  • Consumption L/100km : 4.4 - 9.2 L/100km
details

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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

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

Mercedes B Class

The Mercedes B-Class is a smart, grown-up compact people carrier that dresses everyday practicality in a near‑premium polish, perfect for buyers who want comfort and a classy badge without the theatrics. It won’t set your pulse racing on a back road, but it will make school runs, commutes and grocery hauls feel pleasantly civilized — a reliable, slightly posh companion for real life.

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Reviews Mercedes B Class

4.9 (5 Reviews)
rate
Peter
5 Mar 2026, 05:51:19

My wife and I have been driving a Mercedes W247 200d for seven years now, with 93,000 km on the clock. The car is very comfortable even on long trips and economical. At the last service the pads of the electric parking brake were replaced; otherwise no repairs. We love this car.

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

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Audi A3 Limousine
Mercedes B Class

Costs and Consumption
Price
27,700 - 94,300 £
Price
33,100 - 52,500 £
Consumption L/100km
4.4 - 9.2 L/100km
Consumption L/100km
5.1 - 6.9 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
115 - 208 g/km
co2
133 - 156 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Sedan
Body Type
MPV
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
1,360 - 1,640 kg
Curb weight
1,405 - 1,565 kg
Trunk capacity
321 - 425 L
Trunk capacity
445 - 455 L
Length
-
Length
-
Width
1,816 - 1,851 mm
Width
1,796 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
415 - 480 kg
Payload
515 - 550 kg

Engine and Performance
Engine Type
Petrol, Petrol MHEV, Diesel
Engine Type
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 - 238 HP
Acceleration 0-100km/h
3.8 - 10.1 s
Acceleration 0-100km/h
6.5 - 10 s
Max Speed
-
Max Speed
-
Torque
220 - 500 Nm
Torque
200 - 400 Nm
Number of Cylinders
4 - 5
Number of Cylinders
4
Power kW
85 - 294 kW
Power kW
85 - 175 kW
Engine capacity
1,498 - 2,480 cm3
Engine capacity
1,332 - 1,991 cm3

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