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Mercedes B Class vs Renault R4 comparison

Compare performance (238 HP vs 150 HP), boot space and price (33,100 £ vs 27,300 £ ) at a glance. Find out which car is the better choice for you – Mercedes B Class or Renault R4?

Mercedes B Class vs Renault R4: Key differences

Mercedes B Class

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

Renault R4

5 (1 Reviews)
rate
  • markedly cheaper
  • significantly more trunk space
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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:

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

Renault R4 is markedly cheaper – starting at 27,300 £ , while the Mercedes B Class costs 33,100 £ . That’s a price difference of around 5,804 £.

R4

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 noticeably more power – delivering 238 HP compared to 150 HP. That’s roughly 88 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes B Class is visibly quicker – completing the sprint in 6.5 s, while the Renault R4 takes 8.2 s. That’s about 1.7 s quicker.

There’s also a difference in torque: the Mercedes B Class delivers noticeably more torque with 400 Nm compared to 245 Nm. That’s about 155 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 only slightly lighter – 1,405 kg compared to 1,510 kg. The difference is around 105 kg.

Looking at boot space, the Renault R4 offers significantly more boot space – 1,045 L compared to 455 L. That’s a difference of about 590 L.

When it comes to payload, the Mercedes B Class carries slightly more – 550 kg compared to 443 kg. That’s a difference of about 107 kg.

Who wins the race in the data check?

The Renault R4 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 £27,300
R4

Renault R4

  • Engine Type Electric
  • Transmission Automatic
  • Drive Type Front-Wheel Drive
  • Power HP 150 HP
  • Consumption kWh/100km 15.1 kWh/100km
  • Electric Range 409 km
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Mercedes B Class
Renault R4

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

Renault R4

The Renault R4, affectionately known as the "R4," is a quintessential symbol of French automotive simplicity and practicality. This classic compact car, originally introduced in the early 1960s, won over numerous enthusiasts with its versatile design and dependable performance. Its no-frills charm and robust build made it a beloved choice for rural drivers and city dwellers alike, cementing its status as an iconic piece of automotive history.

details
R-DAM_1606030
R-DAM_1606039
R-DAM_1605976

Reviews Renault R4

5 (1 Reviews)
rate

No reviews yet. Share your experience and help others decide.

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Renault R4

Costs and Consumption
Price
33,100 - 52,500 £
Price
27,300 - 32,800 £
Consumption L/100km
5.1 - 6.9 L/100km
Consumption L/100km
-
Consumption kWh/100km
-
Consumption kWh/100km
15.1 kWh/100km
Electric Range
-
Electric Range
409 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
2 - 5
Doors
-
Doors
-
Curb weight
1,405 - 1,565 kg
Curb weight
1,510 - 1,537 kg
Trunk capacity
445 - 455 L
Trunk capacity
420 - 1,045 L
Length
-
Length
-
Width
1,796 mm
Width
1,808 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
515 - 550 kg
Payload
385 - 443 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
150 HP
Acceleration 0-100km/h
6.5 - 10 s
Acceleration 0-100km/h
8.2 s
Max Speed
-
Max Speed
-
Torque
200 - 400 Nm
Torque
245 Nm
Number of Cylinders
4
Number of Cylinders
-
Power kW
85 - 175 kW
Power kW
110 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
Renault
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.