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BMW 4 Series Gran Coupe vs Mercedes B Class comparison
Compare performance (392 HP vs 238 HP), boot space and price (45,700 £ vs 33,100 £ ) at a glance. Find out which car is the better choice for you – BMW 4 Series Gran Coupe or Mercedes B Class?
BMW 4 Series Gran Coupe vs Mercedes B Class: Key differences
All details on performance, efficiency, range and trunk space can be found in the technical comparison below – including user reviews for both models.
4 Series Gran Coupe
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 visibly cheaper – starting at 33,100 £ , while the BMW 4 Series Gran Coupe costs 45,700 £ . That’s a price difference of around 12,556 £.
Fuel consumption also shows a difference: the BMW 4 Series Gran Coupe uses 5 L/100km and is only slightly more efficient than the Mercedes B Class with 5.1 L/100km. The difference is about 0.1 L/100km.
B Class
Engine and Performance:
Power, torque and acceleration say a lot about how a car feels on the road. This is where you see which model delivers more driving dynamics.
When it comes to engine power, the BMW 4 Series Gran Coupe offers markedly more power – delivering 392 HP compared to 238 HP. That’s roughly 154 HP more horsepower.
When accelerating from 0 to 100 km/h, the BMW 4 Series Gran Coupe is clearly quicker – completing the sprint in 4.6 s, while the Mercedes B Class takes 6.5 s. That’s about 1.9 s quicker.
There’s also a difference in torque: the BMW 4 Series Gran Coupe delivers markedly more torque with 650 Nm compared to 400 Nm. That’s about 250 Nm more.
4 Series Gran Coupe
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 1,695 kg. The difference is around 290 kg.
Looking at boot space, the BMW 4 Series Gran Coupe offers barely more boot space – 470 L compared to 455 L. That’s a difference of about 15 L.
When it comes to payload, the Mercedes B Class carries moderately more – 550 kg compared to 480 kg. That’s a difference of about 70 kg.
Who wins the race in the data check?
The BMW 4 Series Gran Coupe 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 £45,700
BMW 4 Series Gran Coupe
BMW 4 Series Gran Coupe
Mercedes B Class
Costs and Consumption
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Engine and Performance
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Dimensions and Body
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BMW 4 Series Gran Coupe
The BMW 4 Series Gran Coupe marries coupe-like drama with hatchback practicality, offering a sloping roofline that still lets you load bags without a wrestling match. It steers with familiar BMW poise, so buyers after sporty looks and everyday usability get the best of both worlds—and a car that makes the commute feel a bit more glamorous.
details
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
BMW 4 Series Gran Coupe
Mercedes B Class
Costs and Consumption |
|
|---|---|
|
Price
45,700 - 68,800 £
|
Price
33,100 - 52,500 £
|
|
Consumption L/100km
5 - 7.8 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
131 - 179 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
1,695 - 1,935 kg
|
Curb weight
1,405 - 1,565 kg
|
|
Trunk capacity
470 L
|
Trunk capacity
445 - 455 L
|
|
Length
-
|
Length
-
|
|
Width
1,852 mm
|
Width
1,796 mm
|
|
Height
-
|
Height
-
|
|
Max trunk capacity
-
|
Max trunk capacity
-
|
|
Payload
480 kg
|
Payload
515 - 550 kg
|
Engine and Performance |
|
|---|---|
|
Engine Type
Diesel MHEV, Petrol, Petrol MHEV
|
Engine Type
Petrol MHEV, Diesel
|
|
Transmission
Automatic
|
Transmission
Automatic
|
|
Transmission Detail
Automatic Gearbox
|
Transmission Detail
Dual-Clutch Automatic
|
|
Drive Type
All-Wheel Drive, Rear-Wheel Drive
|
Drive Type
Front-Wheel Drive, All-Wheel Drive
|
|
Power HP
184 - 392 HP
|
Power HP
116 - 238 HP
|
|
Acceleration 0-100km/h
4.6 - 7.9 s
|
Acceleration 0-100km/h
6.5 - 10 s
|
|
Max Speed
-
|
Max Speed
-
|
|
Torque
300 - 650 Nm
|
Torque
200 - 400 Nm
|
|
Number of Cylinders
4 - 6
|
Number of Cylinders
4
|
|
Power kW
135 - 288 kW
|
Power kW
85 - 175 kW
|
|
Engine capacity
1,995 - 2,998 cm3
|
Engine capacity
1,332 - 1,991 cm3
|
General |
|
|---|---|
|
Model Year
2,024 - 2,025
|
Model Year
2025
|
|
CO2 Efficiency Class
E, D, F, G
|
CO2 Efficiency Class
D, E, F
|
|
Brand
BMW
|
Brand
Mercedes-Benz
|
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.