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Mercedes B Class vs BMW 8 Series Coupé comparison

Compare performance (238 HP vs 625 HP), boot space and price (33,100 £ vs 90,000 £ ) at a glance. Find out which car is the better choice for you – Mercedes B Class or BMW 8 Series Coupé?

Mercedes B Class vs BMW 8 Series Coupé: Key differences

Mercedes B Class

4.9 (5 Reviews)
rate
  • significantly cheaper
  • clearly more efficient
  • clearly lighter
  • barely more trunk space

BMW 8 Series Coupé

  • considerably more power
  • significantly quicker 0–100 km/h

All details on performance, efficiency, range and trunk space can be found in the technical comparison below – including user reviews for both models.

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.

Mercedes B Class is significantly cheaper – starting at 33,100 £ , while the BMW 8 Series Coupé costs 90,000 £ . That’s a price difference of around 56,871 £.

Fuel consumption also shows a difference: the Mercedes B Class uses 2.5 L/100km and is clearly more efficient than the BMW 8 Series Coupé with 6.7 L/100km. The difference is about 4.2 L/100km.

8 Series Coupé

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 BMW 8 Series Coupé offers considerably more power – delivering 625 HP compared to 238 HP. That’s roughly 387 HP more horsepower.

When accelerating from 0 to 100 km/h, the BMW 8 Series Coupé is significantly quicker – completing the sprint in 3.2 s, while the Mercedes B Class takes 6.5 s. That’s about 3.3 s quicker.

Looking at top speed, the BMW 8 Series Coupé is moderately faster – reaching 250 km/h, while the Mercedes B Class tops out at 223 km/h. The difference is around 27 km/h.

There’s also a difference in torque: the BMW 8 Series Coupé delivers noticeably more torque with 750 Nm compared to 450 Nm. That’s about 300 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 clearly lighter – 1,405 kg compared to 1,805 kg. The difference is around 400 kg.

Looking at boot space, the Mercedes B Class offers barely more boot space – 455 L compared to 440 L. That’s a difference of about 15 L.

When it comes to payload, the Mercedes B Class carries very slightly more – 550 kg compared to 545 kg. That’s a difference of about 5 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 : Plugin Hybrid, Petrol MHEV, Diesel
  • Transmission : Automatic
  • Drive Type : Front-Wheel Drive, All-Wheel Drive
  • Power HP : 116 - 238 HP
  • Consumption L/100km : 2.5 - 6.9 L/100km
  • Electric Range : 83 km
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Frequently compared as well

Mercedes B Class
Mercedes GLA
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The Mercedes B‑Class is the practical, airy people‑carrier that prioritises space and comfort, while the Mercedes GLA takes the same mechanical smarts and adds SUV looks, higher ride height and a touch more road presence. Pick the B‑Class for family‑friendly sense and efficiency, choose the GLA if …
Mercedes A Class
Mercedes B Class
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The Mercedes A‑Class is the sporty, tech‑savvy compact that thrills with sharp handling and a slick cockpit, while the Mercedes B‑Class trades a bit of attitude for towering practicality, roomier seats and a more useful boot. Choose the A‑Class if you want driving fun and style; pick the B‑Class if …
Mercedes B Class
BMW 8 Series Coupé

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.

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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

BMW 8 Series Coupé

The BMW 8 Series Coupé blends elegant, low-slung coupé looks with a purposeful, athletic stance that hints at both comfort and serious driving fun. Inside it feels indulgent and driver-focused, the sort of car that turns motorway miles into a breeze while quietly daring you to chase a twisty back road — and yes, it photographs magnificently.

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Reviews BMW 8 Series Coupé

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

Frequently compared as well

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Mercedes B Class
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Mercedes B Class
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Mercedes B Class
BMW 8 Series Coupé

Costs and Consumption
Price
33,100 - 52,500 £
Price
90,000 - 158,900 £
Consumption L/100km
2.5 - 6.9 L/100km
Consumption L/100km
6.7 - 11.5 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
83 km
Electric Range
-
Battery Capacity
12.9 kWh
Battery Capacity
-
co2
56 - 156 g/km
co2
176 - 263 g/km
Fuel tank capacity
35 L
Fuel tank capacity
66 - 68 L

Dimensions and Body
Body Type
MPV
Body Type
Coupe
Seats
5
Seats
4 - 5
Doors
5
Doors
2 - 4
Curb weight
1,405 - 1,745 kg
Curb weight
1,805 - 2,085 kg
Trunk capacity
405 - 455 L
Trunk capacity
420 - 440 L
Length
4,419 mm
Length
4,851 - 5,098 mm
Width
1,796 mm
Width
1,902 - 1,943 mm
Height
1,562 mm
Height
1,346 - 1,420 mm
Max trunk capacity
1,440 L
Max trunk capacity
-
Payload
505 - 550 kg
Payload
370 - 545 kg

Engine and Performance
Engine Type
Plugin Hybrid, Petrol MHEV, Diesel
Engine Type
Diesel MHEV, Petrol
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Dual-Clutch Automatic
Transmission Detail
Automatic Gearbox
Drive Type
Front-Wheel Drive, All-Wheel Drive
Drive Type
All-Wheel Drive, Rear-Wheel Drive
Power HP
116 - 238 HP
Power HP
333 - 625 HP
Acceleration 0-100km/h
6.5 - 10 s
Acceleration 0-100km/h
3.2 - 5.4 s
Max Speed
223 km/h
Max Speed
250 km/h
Torque
200 - 450 Nm
Torque
500 - 750 Nm
Number of Cylinders
4
Number of Cylinders
6 - 8
Power kW
85 - 175 kW
Power kW
245 - 460 kW
Engine capacity
1,332 - 1,991 cm3
Engine capacity
2,993 - 4,395 cm3

General
Model Year
2,024 - 2,025
Model Year
2,024
CO2 Efficiency Class
B, D, E, F
CO2 Efficiency Class
G
Brand
Mercedes-Benz
Brand
BMW
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.