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Mercedes B Class vs Peugeot 308 SW comparison

Compare performance (238 HP vs 195 HP), boot space and price (33,100 £ vs 30,100 £ ) at a glance. Find out which car is the better choice for you – Mercedes B Class or Peugeot 308 SW?

Mercedes B Class vs Peugeot 308 SW: Key differences

Mercedes B Class

4.9 (5 Reviews)
rate
  • slightly more power
  • a bit quicker 0–100 km/h
  • only slightly lighter
details

Peugeot 308 SW

4.5 (2 Reviews)
rate
  • only slightly cheaper
  • considerably more efficient
  • a bit 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 key factors when choosing a car – and this is often where the real differences emerge.

Peugeot 308 SW is only slightly cheaper – starting at 30,100 £ , while the Mercedes B Class costs 33,100 £ . That’s a price difference of around 3,009 £.

Fuel consumption also shows a difference: the Peugeot 308 SW uses 2.3 L/100km and is considerably more efficient than the Mercedes B Class with 5.1 L/100km. The difference is about 2.8 L/100km.

308 SW

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 slightly more power – delivering 238 HP compared to 195 HP. That’s roughly 43 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes B Class is a bit quicker – completing the sprint in 6.5 s, while the Peugeot 308 SW takes 7.7 s. That’s about 1.2 s quicker.

There’s also a difference in torque: the Mercedes B Class delivers clearly more torque with 400 Nm compared to 300 Nm. That’s about 100 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 only slightly lighter – 1,405 kg compared to 1,484 kg. The difference is around 79 kg.

Looking at boot space, the Peugeot 308 SW offers a bit more boot space – 551 L compared to 455 L. That’s a difference of about 96 L.

When it comes to payload, the Mercedes B Class carries marginally more – 550 kg compared to 508 kg. That’s a difference of about 42 kg.

Who wins the race in the data check?

The Peugeot 308 SW 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 £30,100
308 SW

Peugeot 308 SW

  • Engine Type Petrol MHEV, Diesel, Plugin Hybrid, Electric
  • Transmission Automatic
  • Drive Type Front-Wheel Drive
  • Power HP 131 - 195 HP
  • Consumption L/100km 2.3 - 5.1 L/100km
  • Consumption kWh/100km 15.7 kWh/100km
  • Electric Range 81 - 444 km
details

Frequently compared as well

Mercedes B Class
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VS
The Mercedes B‑Class and Mercedes GLA target buyers who want Mercedes practicality with premium touches, but they take different paths: the B‑Class is a spacious, hatchback-style people carrier while the GLA is a compact crossover with a higher ride height and sportier stance. This comparison looks …
Peugeot 308 SW
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Mercedes B Class
Peugeot 308 SW

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
18C0947_011
18C0947_009
18C0953_005
18C0953_035
18C0947_044

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

Peugeot 308 SW

The Peugeot 308 SW blends French flair with estate practicality, dressing up daily chores in a surprisingly handsome package. Inside it's cleverly laid out and comfortable, and the composed, entertaining drive makes family duty feel a little less like a chore.

details
PEUGEOT_308_TESTDRIVE_0921TC 125
PEUGEOT_308_TESTDRIVE_0921TC 173
PEUGEOT_308_TESTDRIVE_0921TC 5
PEUGEOT_308_TESTDRIVE_0921TC 145
PEUGEOT_308_TESTDRIVE_0921TC 322

Reviews Peugeot 308 SW

4.5 (2 Reviews)
rate
GT
6 Dec 2025, 17:50:57

Great car with a smooth ride. I have 308 SW GT, with the 180HP PHEV engine

pierre
29 Nov 2025, 17:19:44

150,000 km in 2 years — SW BlueHDi 1.5L 30cv. Comfortable, excellent gearbox. Maybe a bit noisy on the motorway, with air noise around the front doors. A slightly punchier engine would be welcome. The entire timing system was replaced under warranty at 110,000 km.

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VS
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Peugeot 308
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Mercedes B Class
Peugeot 308 SW

Costs and Consumption
Price
33,100 - 52,500 £
Price
30,100 - 43,800 £
Consumption L/100km
5.1 - 6.9 L/100km
Consumption L/100km
2.3 - 5.1 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
15.7 kWh/100km
Electric Range
-
Electric Range
81 - 444 km
Battery Capacity
-
Battery Capacity
-
co2
133 - 156 g/km
co2
0 - 134 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
MPV
Body Type
Estate
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
1,405 - 1,565 kg
Curb weight
1,484 - 1,783 kg
Trunk capacity
445 - 455 L
Trunk capacity
467 - 551 L
Length
-
Length
-
Width
1,796 mm
Width
1,852 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
515 - 550 kg
Payload
417 - 508 kg

Engine and Performance
Engine Type
Petrol MHEV, Diesel
Engine Type
Petrol MHEV, Diesel, Plugin Hybrid, Electric
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Dual-Clutch Automatic
Transmission Detail
Dual-Clutch Automatic, Automatic Gearbox, Reduction Gearbox
Drive Type
Front-Wheel Drive, All-Wheel Drive
Drive Type
Front-Wheel Drive
Power HP
116 - 238 HP
Power HP
131 - 195 HP
Acceleration 0-100km/h
6.5 - 10 s
Acceleration 0-100km/h
7.7 - 10.9 s
Max Speed
-
Max Speed
-
Torque
200 - 400 Nm
Torque
230 - 300 Nm
Number of Cylinders
4
Number of Cylinders
3 - 4
Power kW
85 - 175 kW
Power kW
96 - 143 kW
Engine capacity
1,332 - 1,991 cm3
Engine capacity
1,199 - 1,598 cm3

General
Model Year
2025
Model Year
2,025 - 2,026
CO2 Efficiency Class
D, E, F
CO2 Efficiency Class
C, D, B, A
Brand
Mercedes-Benz
Brand
Peugeot
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.