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Mercedes B Class vs MG MG4 comparison

Compare performance (238 HP vs 435 HP), boot space and price (33,100 £ vs 36,800 £ ) at a glance. Find out which car is the better choice for you – Mercedes B Class or MG MG4?

Mercedes B Class vs MG MG4: Key differences

Mercedes B Class

4.9 (5 Reviews)
rate
  • somewhat cheaper
  • visibly lighter
details

MG MG4

4.8 (3 Reviews)
rate
  • significantly more power
  • significantly quicker 0–100 km/h
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:

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

Mercedes B Class is somewhat cheaper – starting at 33,100 £ , while the MG MG4 costs 36,800 £ . That’s a price difference of around 3,719 £.

MG4

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 MG MG4 offers significantly more power – delivering 435 HP compared to 238 HP. That’s roughly 197 HP more horsepower.

When accelerating from 0 to 100 km/h, the MG MG4 is significantly quicker – completing the sprint in 3.8 s, while the Mercedes B Class takes 6.5 s. That’s about 2.7 s quicker.

There’s also a difference in torque: the MG MG4 delivers noticeably more torque with 600 Nm compared to 400 Nm. That’s about 200 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 visibly lighter – 1,405 kg compared to 1,755 kg. The difference is around 350 kg.

When it comes to payload, the Mercedes B Class carries a bit more – 550 kg compared to 448 kg. That’s a difference of about 102 kg.

Who wins the race in the data check?

The MG MG4 holds a decisive overall lead 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 £36,800
MG4

MG MG4

  • Engine Type : Electric
  • Transmission : Automatic
  • Drive Type : Rear-Wheel Drive, All-Wheel Drive
  • Power HP : 190 - 435 HP
  • Consumption kWh/100km : 16.1 - 19 kWh/100km
  • Electric Range : 405 - 545 km
details

Frequently compared as well

MG MG4
BYD Atto 2
VS
Think of the MG4 as the affordable hot hatch of the EV world — compact, sharp-handling and great value for drivers who want a little grin in every corner, while the BYD Atto 2 is a chilled crossover, taller, roomier and packed with clever tech and impressive real-world range. If you want lively …
Mercedes A Class
Mercedes B Class
VS
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
MG MG4

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

MG MG4

The MG4 is a sprightly electric hatch that marries bold, modern looks with genuinely useful practicality, making it a great everyday companion for city and weekend life alike. Inside it surprises with a smart, user-friendly cabin and an engaging drive that delivers more personality than you might expect for the price.

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Reviews MG MG4

4.8 (3 Reviews)
rate
TOTO
20 May 2026, 11:19:27

The MG4 seems more versatile to me than the Dolphin, which relies mainly on design. The MG4 has proven itself and remains an excellent used option with low mileage.

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
Angio
12 Jan 2026, 12:26:30

Superb

How do you mainly use this car? (optional): City / Short distance
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money
Sal
23 Oct 2025, 20:41:36

I tried it today and found the car genuinely pleasant and comfortable to drive.

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 …
MG MG4
MG MGS5 EV
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MG MG4
BYD Dolphin Surf
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Comparing the MG4 and the BYD Dolphin Surf gives you a clear look at two affordable electric hatchbacks that target practical daily use but take very different approaches to range, interior space and driving character. If you want a compact EV that leans toward sharp handling and a sporty layout, …
MG MG3
MG MG4
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Kia EV3
MG MG4
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MG MG4
MG MG4 Urban
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Choosing between the MG4 and the MG4 Urban comes down to whether you want the standard hatch’s broader range and performance or the Urban’s city-focused features and styling. I’ll highlight the key differences in range, equipment, ride and price so you can pick the MG4 that best matches your daily …
MG MG4
Peugeot 208
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Ford Puma
MG MG4
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If you want a cheeky, petrol-powered compact crossover that feels taut and practical — with Ford's lively chassis, a roomy MegaBox boot and mild‑hybrid frugality — the Puma is the small SUV to live with. But if you're ready to go electric without blowing the budget, the MG4 serves up surprising …
Mercedes B Class
MG MG4

Costs and Consumption
Price
33,100 - 52,500 £
Price
36,800 - 40,300 £
Consumption L/100km
5.1 - 6.9 L/100km
Consumption L/100km
-
Consumption kWh/100km
-
Consumption kWh/100km
16.1 - 19 kWh/100km
Electric Range
-
Electric Range
405 - 545 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
Hatchback
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
1,405 - 1,565 kg
Curb weight
1,755 - 1,810 kg
Trunk capacity
445 - 455 L
Trunk capacity
-
Length
-
Length
-
Width
1,796 mm
Width
1,836 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
515 - 550 kg
Payload
448 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
Rear-Wheel Drive, All-Wheel Drive
Power HP
116 - 238 HP
Power HP
190 - 435 HP
Acceleration 0-100km/h
6.5 - 10 s
Acceleration 0-100km/h
3.8 - 7.5 s
Max Speed
-
Max Speed
-
Torque
200 - 400 Nm
Torque
350 - 600 Nm
Number of Cylinders
4
Number of Cylinders
-
Power kW
85 - 175 kW
Power kW
140 - 320 kW
Engine capacity
1,332 - 1,991 cm3
Engine capacity
-

General
Model Year
2025
Model Year
2026
CO2 Efficiency Class
D, E, F
CO2 Efficiency Class
A
Brand
Mercedes-Benz
Brand
MG
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.