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Audi A1 vs Mercedes B Class comparison

Compare performance (207 HP vs 238 HP), boot space and price (20,000 £ vs 33,100 £ ) at a glance. Find out which car is the better choice for you – Audi A1 or Mercedes B Class?

Audi A1 vs Mercedes B Class: Key differences

Audi A1

2.4 (1 Reviews)
rate
  • significantly cheaper
  • somewhat lighter
details

Mercedes B Class

4.9 (5 Reviews)
rate
  • somewhat more power
  • very slightly more efficient
  • clearly 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

A1

Costs and Efficiency:

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

Audi A1 is significantly cheaper – starting at 20,000 £ , while the Mercedes B Class costs 33,100 £ . That’s a price difference of around 13,158 £.

Fuel consumption also shows a difference: the Mercedes B Class uses 5.1 L/100km and is very slightly more efficient than the Audi A1 with 5.2 L/100km. The difference is about 0.1 L/100km.

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 Mercedes B Class offers somewhat more power – delivering 238 HP compared to 207 HP. That’s roughly 31 HP more horsepower.

Both models accelerate almost equally fast – 6.5 s from 0 to 100 km/h.

There’s also a difference in torque: the Mercedes B Class delivers a bit more torque with 400 Nm compared to 320 Nm. That’s about 80 Nm more.

A1

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 A1 is somewhat lighter – 1,175 kg compared to 1,405 kg. The difference is around 230 kg.

Looking at boot space, the Mercedes B Class offers clearly more boot space – 455 L compared to 335 L. That’s a difference of about 120 L.

When it comes to payload, the Mercedes B Class carries moderately more – 550 kg compared to 470 kg. That’s a difference of about 80 kg.

Who wins the race in the data check?

The Audi A1 is barely 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.

from £20,000
A1

Audi A1

  • Engine Type : Petrol
  • Transmission : Manuel, Automatic
  • Drive Type : Front-Wheel Drive
  • Power HP : 95 - 207 HP
  • Consumption L/100km : 5.2 - 6.4 L/100km
Audi A1
Mercedes B Class

Costs and Consumption

View detailed analysis

Engine and Performance

View detailed analysis

Dimensions and Body

View detailed analysis

Audi A1

The Audi A1 is a compact premium hatch that wraps Audi's polished design and surprisingly grown-up cabin into a city-friendly package. It’s poised and fun to drive, a smart pick for buyers who want luxury flair without the fuss of a bigger car — and it makes tight parking feel almost enjoyable.

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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.

details
Audi A1
Mercedes B Class

Costs and Consumption

Price
20,000 - 28,800 £
Price
33,100 - 52,500 £
Consumption L/100km
5.2 - 6.4 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
118 - 146 g/km
co2
133 - 156 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body

Body Type
Hatchback
Body Type
MPV
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
1,175 - 1,365 kg
Curb weight
1,405 - 1,565 kg
Trunk capacity
335 L
Trunk capacity
445 - 455 L
Length
-
Length
-
Width
1,740 - 1,756 mm
Width
1,796 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
410 - 470 kg
Payload
515 - 550 kg

Engine and Performance

Engine Type
Petrol
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
Drive Type
Front-Wheel Drive, All-Wheel Drive
Power HP
95 - 207 HP
Power HP
116 - 238 HP
Acceleration 0-100km/h
6.5 - 11.5 s
Acceleration 0-100km/h
6.5 - 10 s
Max Speed
-
Max Speed
-
Torque
175 - 320 Nm
Torque
200 - 400 Nm
Number of Cylinders
3 - 4
Number of Cylinders
4
Power kW
70 - 152 kW
Power kW
85 - 175 kW
Engine capacity
999 - 1,984 cm3
Engine capacity
1,332 - 1,991 cm3

General

Model Year
2025
Model Year
2025
CO2 Efficiency Class
D, E
CO2 Efficiency Class
D, E, F
Brand
Audi
Brand
Mercedes-Benz
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.