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BMW 1 Series vs Mercedes B Class comparison

Compare performance (300 HP vs 238 HP), boot space and price (29,400 £ vs 33,100 £ ) at a glance. Find out which car is the better choice for you – BMW 1 Series or Mercedes B Class?

BMW 1 Series vs Mercedes B Class: Key differences

BMW 1 Series

5 (1 Reviews)
rate
  • moderately cheaper
  • markedly more power
  • slightly more efficient
  • visibly quicker 0–100 km/h
details

Mercedes B Class

4.9 (5 Reviews)
rate
  • very slightly lighter
  • slightly 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

1 Series

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.

BMW 1 Series is moderately cheaper – starting at 29,400 £ , while the Mercedes B Class costs 33,100 £ . That’s a price difference of around 3,772 £.

Fuel consumption also shows a difference: the BMW 1 Series uses 4.3 L/100km and is slightly more efficient than the Mercedes B Class with 5.1 L/100km. The difference is about 0.8 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 BMW 1 Series offers markedly more power – delivering 300 HP compared to 238 HP. That’s roughly 62 HP more horsepower.

When accelerating from 0 to 100 km/h, the BMW 1 Series is visibly quicker – completing the sprint in 4.9 s, while the Mercedes B Class takes 6.5 s. That’s about 1.6 s quicker.

Both models offer the same torque – 400 Nm.

1 Series

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, Mercedes B Class is very slightly lighter – 1,405 kg compared to 1,465 kg. The difference is around 60 kg.

Looking at boot space, the Mercedes B Class offers slightly more boot space – 455 L compared to 380 L. That’s a difference of about 75 L.

When it comes to payload, the Mercedes B Class carries very slightly more – 550 kg compared to 510 kg. That’s a difference of about 40 kg.

Who wins the race in the data check?

The BMW 1 Series is decisively 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 £29,400
1 Series

BMW 1 Series

  • Engine Type : Diesel, Petrol MHEV, Diesel MHEV, Petrol
  • Transmission : Automatic
  • Drive Type : Front-Wheel Drive, All-Wheel Drive
  • Power HP : 122 - 300 HP
  • Consumption L/100km : 4.3 - 7.6 L/100km
details

Frequently compared as well

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Mercedes B Class
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BMW 1 Series
Mercedes B Class

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

BMW 1 Series

The BMW 1 Series is a compact premium hatchback that injects a proper sense of driving fun into everyday life, with sharp handling and a cabin that punches above its class. It’s a great pick for buyers who want sporty manners without losing practicality, and yes, you’ll still get that unmistakable BMW grin behind the wheel.

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Reviews BMW 1 Series

5 (1 Reviews)
rate

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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BMW 1 Series
Mercedes B Class

Costs and Consumption
Price
29,400 - 51,900 £
Price
33,100 - 52,500 £
Consumption L/100km
4.3 - 7.6 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
112 - 173 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
1,465 - 1,625 kg
Curb weight
1,405 - 1,565 kg
Trunk capacity
300 - 380 L
Trunk capacity
445 - 455 L
Length
-
Length
-
Width
1,800 mm
Width
1,796 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
475 - 510 kg
Payload
515 - 550 kg

Engine and Performance
Engine Type
Diesel, Petrol MHEV, Diesel MHEV, Petrol
Engine Type
Petrol MHEV, Diesel
Transmission
Automatic
Transmission
Automatic
Transmission Detail
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
122 - 300 HP
Power HP
116 - 238 HP
Acceleration 0-100km/h
4.9 - 9.8 s
Acceleration 0-100km/h
6.5 - 10 s
Max Speed
-
Max Speed
-
Torque
230 - 400 Nm
Torque
200 - 400 Nm
Number of Cylinders
3 - 4
Number of Cylinders
4
Power kW
90 - 221 kW
Power kW
85 - 175 kW
Engine capacity
1,499 - 1,998 cm3
Engine capacity
1,332 - 1,991 cm3

General
Model Year
2024
Model Year
2025
CO2 Efficiency Class
D, C, F
CO2 Efficiency Class
D, E, F
Brand
BMW
Brand
Mercedes-Benz
What drive types are available for the BMW 1 Series?

The BMW 1 Series 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.