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Mercedes B Class vs Subaru Forester comparison

Compare performance (238 HP vs 136 HP), boot space and price (33,100 £ vs 34,700 £ ) at a glance. Find out which car is the better choice for you – Mercedes B Class or Subaru Forester?

Mercedes B Class vs Subaru Forester: Key differences

Mercedes B Class

4.9 (5 Reviews)
rate
  • marginally cheaper
  • considerably more power
  • significantly more efficient
  • clearly quicker 0–100 km/h
  • visibly lighter
details

Subaru Forester

3.8 (3 Reviews)
rate
  • moderately 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

B Class

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.

Mercedes B Class is marginally cheaper – starting at 33,100 £ , while the Subaru Forester costs 34,700 £ . That’s a price difference of around 1,576 £.

Fuel consumption also shows a difference: the Mercedes B Class uses 5.1 L/100km and is significantly more efficient than the Subaru Forester with 8.1 L/100km. The difference is about 3 L/100km.

Forester

Engine and Performance:

Under the bonnet, it becomes clear which model is tuned for sportiness and which one takes the lead when you hit the accelerator.

When it comes to engine power, the Mercedes B Class offers considerably more power – delivering 238 HP compared to 136 HP. That’s roughly 102 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes B Class is clearly quicker – completing the sprint in 6.5 s, while the Subaru Forester takes 12.2 s. That’s about 5.7 s quicker.

There’s also a difference in torque: the Mercedes B Class delivers substantially more torque with 400 Nm compared to 182 Nm. That’s about 218 Nm more.

B Class

Space and Everyday Use:

Cabin size, boot volume and payload all play a role in everyday practicality. Here, comfort and flexibility make the difference.

Both vehicles offer seating for 5 people.

In terms of curb weight, Mercedes B Class is visibly lighter – 1,405 kg compared to 1,693 kg. The difference is around 288 kg.

Looking at boot space, the Subaru Forester offers moderately more boot space – 508 L compared to 455 L. That’s a difference of about 53 L.

When it comes to payload, the Mercedes B Class carries slightly more – 550 kg compared to 492 kg. That’s a difference of about 58 kg.

Who wins the race in the data check?

The Mercedes B Class is clearly superior 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 £33,100
B Class

Mercedes B Class

  • Engine Type : Petrol MHEV, Diesel
  • Transmission : Automatic
  • Drive Type : Front-Wheel Drive, All-Wheel Drive
  • Power HP : 116 - 238 HP
  • Consumption L/100km : 5.1 - 6.9 L/100km
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Frequently compared as well

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Mercedes B Class
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Mercedes B Class
Subaru Forester

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
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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

Subaru Forester

The Subaru Forester is a practical all-rounder that quietly does everything right, with roomy comfort, excellent visibility and a real fondness for weekend adventures off the beaten path. It won't set your pulse racing like a sports car, but for buyers who prize reliability, safety and sensible charm, it's a brilliantly steady companion with a cheeky streak.

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Reviews Subaru Forester

3.8 (3 Reviews)
rate
Dirk
8 Dec 2025, 17:00:06

It's indeed much more expensive, but it drives brilliantly. I have the automatic — fantastic. It's a bit noisy for such an expensive car, and servicing at a Subaru dealer isn't cheap. It's certainly not economical.

On the other hand, very little breaks and it will never leave you stranded. And that space... 500 litres more is really about a 40% increase.

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Mercedes B Class
Subaru Forester

Costs and Consumption
Price
33,100 - 52,500 £
Price
34,700 - 42,200 £
Consumption L/100km
5.1 - 6.9 L/100km
Consumption L/100km
8.1 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
133 - 156 g/km
co2
183 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
1,693 - 1,739 kg
Trunk capacity
445 - 455 L
Trunk capacity
508 L
Length
-
Length
-
Width
1,796 mm
Width
1,830 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
515 - 550 kg
Payload
446 - 492 kg

Engine and Performance
Engine Type
Petrol MHEV, Diesel
Engine Type
Petrol MHEV
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Dual-Clutch Automatic
Transmission Detail
CVT
Drive Type
Front-Wheel Drive, All-Wheel Drive
Drive Type
All-Wheel Drive
Power HP
116 - 238 HP
Power HP
136 HP
Acceleration 0-100km/h
6.5 - 10 s
Acceleration 0-100km/h
12.2 s
Max Speed
-
Max Speed
-
Torque
200 - 400 Nm
Torque
182 Nm
Number of Cylinders
4
Number of Cylinders
4
Power kW
85 - 175 kW
Power kW
100 kW
Engine capacity
1,332 - 1,991 cm3
Engine capacity
1,995 cm3

General
Model Year
2025
Model Year
2025
CO2 Efficiency Class
D, E, F
CO2 Efficiency Class
G
Brand
Mercedes-Benz
Brand
Subaru
What drivetrain options does the Mercedes B Class have?

Available configurations include 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.