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Audi A3 Limousine vs Mercedes B Class - Differences and prices compared

Compare performance (400 HP vs 238 HP), boot space and price (27700 £ vs 33100 £ ) at a glance. Find out which car is the better choice for you – Audi A3 Limousine or Mercedes B Class?

Audi A3 Limousine

Mercedes B Class

5 (4 Reviews)
rate

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

A3 Limousine

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 Limousine has a to a small extent advantage in terms of price – it starts at 27700 £ , while the Mercedes B Class costs 33100 £ . That’s a price difference of around 5444 £.

Fuel consumption also shows a difference: Mercedes B Class manages with 2.50 L and is therefore decisively more efficient than the Audi A3 Limousine with 4.40 L. The difference is about 1.90 L per 100 km.

B 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 Limousine has a clearly edge – offering 400 HP compared to 238 HP. That’s roughly 162 HP more horsepower.

In acceleration from 0 to 100 km/h, the Audi A3 Limousine is convincingly quicker – completing the sprint in 3.80 s, while the Mercedes B Class takes 6.50 s. That’s about 2.70 s faster.

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

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 curb weight, Audi A3 Limousine is hardly perceptible lighter – 1360 kg compared to 1405 kg. The difference is around 45 kg.

In terms of boot space, the Mercedes B Class offers hardly perceptible more room – 455 L compared to 425 L. That’s a difference of about 30 L.

When it comes to payload, Mercedes B Class a bit takes the win – 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 shows small but noticeable advantages 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 Limousine
Mercedes B Class

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis
from about £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
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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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Mercedes B Class

5 (4 Reviews)
rate

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 Audi A3 Limousine

Reviews Mercedes B Class

5 (4 Reviews)
rate

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Audi A3 Limousine
Mercedes B Class

Costs and Consumption
Price
27700 - 58300 £
Price
33100 - 52500 £
Consumption L/100km
4.4 - 9.2 L
Consumption L/100km
2.5 - 6.9 L
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
83 km
Battery Capacity
-
Battery Capacity
12.90 kWh
co2
115 - 208 g/km
co2
56 - 156 g/km
Fuel tank capacity
-
Fuel tank capacity
35 - 51 L

Dimensions and Body
Body Type
Sedan
Body Type
MPV
Seats
5
Seats
5
Doors
-
Doors
5
Curb weight
1360 - 1640 kg
Curb weight
1405 - 1745 kg
Trunk capacity
321 - 425 L
Trunk capacity
405 - 455 L
Length
-
Length
4419 mm
Width
1816 - 1851 mm
Width
1796 mm
Height
-
Height
1562 mm
Max trunk capacity
-
Max trunk capacity
1440 - 1540 L
Payload
415 - 480 kg
Payload
505 - 550 kg

Engine and Performance
Engine Type
Petrol, Petrol MHEV, Diesel
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 - 238 HP
Acceleration 0-100km/h
3.8 - 10.1 s
Acceleration 0-100km/h
6.5 - 10 s
Max Speed
-
Max Speed
200 - 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 - 175 kW
Engine capacity
1498 - 2480 cm3
Engine capacity
1332 - 1991 cm3

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

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Is the Audi A3 Limousine offered with different drivetrains?

The Audi A3 Limousine 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.