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Mercedes B Class vs MINI Aceman comparison

Compare performance (238 HP vs 258 HP), boot space and price (33,100 £ vs 27,000 £ ) at a glance. Find out which car is the better choice for you – Mercedes B Class or MINI Aceman?

Mercedes B Class vs MINI Aceman: Key differences

Mercedes B Class

4.9 (5 Reviews)
rate
  • visibly lighter
  • clearly more trunk space
details

MINI Aceman

4.5 (2 Reviews)
rate
  • clearly cheaper
  • very slightly more power
  • only slightly quicker 0–100 km/h
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

B 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.

MINI Aceman is clearly cheaper – starting at 27,000 £ , while the Mercedes B Class costs 33,100 £ . That’s a price difference of around 6,129 £.

Aceman

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 MINI Aceman offers very slightly more power – delivering 258 HP compared to 238 HP. That’s roughly 20 HP more horsepower.

When accelerating from 0 to 100 km/h, the MINI Aceman is only slightly quicker – completing the sprint in 6.4 s, while the Mercedes B Class takes 6.5 s. That’s about 0.1 s quicker.

There’s also a difference in torque: the Mercedes B Class delivers slightly more torque with 400 Nm compared to 350 Nm. That’s about 50 Nm more.

B Class

Space and Everyday Use:

Whether family car or daily driver – which one offers more room, flexibility and comfort?

Both vehicles offer seating for 5 people.

In terms of curb weight, Mercedes B Class is visibly lighter – 1,405 kg compared to 1,720 kg. The difference is around 315 kg.

Looking at boot space, the Mercedes B Class offers clearly more boot space – 455 L compared to 300 L. That’s a difference of about 155 L.

When it comes to payload, the Mercedes B Class carries very slightly more – 550 kg compared to 530 kg. That’s a difference of about 20 kg.

Who wins the race in the data check?

The MINI Aceman 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 £27,000
Aceman

MINI Aceman

  • Engine Type Electric
  • Transmission Automatic
  • Drive Type Front-Wheel Drive
  • Power HP 184 - 258 HP
  • Consumption kWh/100km 14.1 - 16 kWh/100km
  • Electric Range 309 - 355 km
Mercedes B Class
MINI Aceman

Costs and Consumption

View detailed analysis

Engine and Performance

View detailed analysis

Dimensions and Body

View detailed analysis

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

MINI Aceman

The MINI Aceman squeezes classic MINI charm into a sharper, more crossover-ready shape, trading some of the old curves for grown-up practicality while keeping the wink-and-grin personality buyers crave. Inside it's a surprisingly premium, customizable cabin that feels clever rather than cluttered, and on the road the Aceman is eager and nimble — ideal for city dwellers who want an SUV silhouette with proper fun behind the wheel.

details
Mercedes B Class
MINI Aceman

Costs and Consumption

Price
33,100 - 52,500 £
Price
27,000 - 36,400 £
Consumption L/100km
5.1 - 6.9 L/100km
Consumption L/100km
-
Consumption kWh/100km
-
Consumption kWh/100km
14.1 - 16 kWh/100km
Electric Range
-
Electric Range
309 - 355 km
Battery Capacity
-
Battery Capacity
-
co2
133 - 156 g/km
co2
0 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body

Body Type
MPV
Body Type
SUV
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
1,405 - 1,565 kg
Curb weight
1,720 - 1,825 kg
Trunk capacity
445 - 455 L
Trunk capacity
300 L
Length
-
Length
-
Width
1,796 mm
Width
1,754 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
515 - 550 kg
Payload
450 - 530 kg

Engine and Performance

Engine Type
Petrol MHEV, Diesel
Engine Type
Electric
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Dual-Clutch Automatic
Transmission Detail
Reduction Gearbox
Drive Type
Front-Wheel Drive, All-Wheel Drive
Drive Type
Front-Wheel Drive
Power HP
116 - 238 HP
Power HP
184 - 258 HP
Acceleration 0-100km/h
6.5 - 10 s
Acceleration 0-100km/h
6.4 - 7.9 s
Max Speed
-
Max Speed
-
Torque
200 - 400 Nm
Torque
290 - 350 Nm
Number of Cylinders
4
Number of Cylinders
-
Power kW
85 - 175 kW
Power kW
135 - 190 kW
Engine capacity
1,332 - 1,991 cm3
Engine capacity
-

General

Model Year
2025
Model Year
2,025 - 2,026
CO2 Efficiency Class
D, E, F
CO2 Efficiency Class
A
Brand
Mercedes-Benz
Brand
MINI
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.