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Mercedes B Class vs MG MG3 - Differences and prices compared
Compare performance (238 HP vs 194 HP), boot space and price (33100 £ vs 15400 £ ) at a glance. Find out which car is the better choice for you – Mercedes B Class or MG MG3?
B Class
Costs and Efficiency:
Looking at overall running costs, both models reveal some interesting differences in everyday economy.
MG MG3 has a convincingly advantage in terms of price – it starts at 15400 £ , while the Mercedes B Class costs 33100 £ . That’s a price difference of around 17709 £.
Fuel consumption also shows a difference: Mercedes B Class manages with 2.50 L and is therefore significantly more efficient than the MG MG3 with 4.40 L. The difference is about 1.90 L per 100 km.
MG3
Engine and Performance:
Power, torque and acceleration are the classic benchmarks for car enthusiasts – and here, some clear differences start to show.
When it comes to engine power, the Mercedes B Class has a to a small extent edge – offering 238 HP compared to 194 HP. That’s roughly 44 HP more horsepower.
In acceleration from 0 to 100 km/h, the Mercedes B Class is evident quicker – completing the sprint in 6.50 s, while the MG MG3 takes 8 s. That’s about 1.50 s faster.
In terms of top speed, the Mercedes B Class performs noticeable better – reaching 250 km/h, while the MG MG3 tops out at 185 km/h. The difference is around 65 km/h.
There’s also a difference in torque: Mercedes B Class pulls decisively stronger with 450 Nm compared to 148 Nm. That’s about 302 Nm difference.
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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 curb weight, MG MG3 is a bit lighter – 1237 kg compared to 1405 kg. The difference is around 168 kg.
In terms of boot space, the Mercedes B Class offers evident more room – 455 L compared to 293 L. That’s a difference of about 162 L.
In maximum load capacity, the Mercedes B Class performs evident better – up to 1540 L, which is about 557 L more than the MG MG3.
When it comes to payload, Mercedes B Class somewhat takes the win – 550 kg compared to 448 kg. That’s a difference of about 102 kg.
Who wins the race?
The Mercedes B Class proves to be is largely superior and therefore becomes our DriveDuel Champion!
Mercedes B Class is the better all-rounder in this comparison.
from about £33,100
Mercedes B Class
Mercedes B Class
MG MG3
Costs and Consumption
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Engine and Performance
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Dimensions and Body
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Mercedes B Class
5 (4 Reviews)
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
MG MG3
5 (1 Reviews)
The MG3 is a cheeky city hatch that pairs bold, youthful styling with sprightly handling for drivers who want personality on a budget. Its cabin is bright and cleverly packaged, offering sensible space and a fun-to-drive character that turns mundane commutes into something a bit more enjoyable.
details
Mercedes B Class
MG MG3
Costs and Consumption |
|
|---|---|
|
Price
33100 - 52500 £
|
Price
15400 - 21400 £
|
|
Consumption L/100km
2.5 - 6.9 L
|
Consumption L/100km
4.4 - 6.1 L
|
|
Consumption kWh/100km
-
|
Consumption kWh/100km
-
|
|
Electric Range
83 km
|
Electric Range
-
|
|
Battery Capacity
12.90 kWh
|
Battery Capacity
-
|
|
co2
56 - 156 g/km
|
co2
100 - 137 g/km
|
|
Fuel tank capacity
35 - 51 L
|
Fuel tank capacity
36 - 45 L
|
Dimensions and Body |
|
|---|---|
|
Body Type
MPV
|
Body Type
Hatchback
|
|
Seats
5
|
Seats
5
|
|
Doors
5
|
Doors
5
|
|
Curb weight
1405 - 1745 kg
|
Curb weight
1237 - 1285 kg
|
|
Trunk capacity
405 - 455 L
|
Trunk capacity
293 L
|
|
Length
4419 mm
|
Length
4113 mm
|
|
Width
1796 mm
|
Width
1797 mm
|
|
Height
1562 mm
|
Height
1502 mm
|
|
Max trunk capacity
1440 - 1540 L
|
Max trunk capacity
983 L
|
|
Payload
505 - 550 kg
|
Payload
373 - 448 kg
|
Engine and Performance |
|
|---|---|
|
Engine Type
Plugin Hybrid, Petrol MHEV, Diesel
|
Engine Type
Full Hybrid, Petrol
|
|
Transmission
Automatic
|
Transmission
Automatic, Manuel
|
|
Transmission Detail
Dual-Clutch Automatic
|
Transmission Detail
Automatic Gearbox, Manual Gearbox
|
|
Drive Type
Front-Wheel Drive, All-Wheel Drive
|
Drive Type
Front-Wheel Drive
|
|
Power HP
116 - 238 HP
|
Power HP
116 - 194 HP
|
|
Acceleration 0-100km/h
6.5 - 10 s
|
Acceleration 0-100km/h
8 - 10.8 s
|
|
Max Speed
200 - 250 km/h
|
Max Speed
170 - 185 km/h
|
|
Torque
200 - 450 Nm
|
Torque
148 Nm
|
|
Number of Cylinders
4
|
Number of Cylinders
4
|
|
Power kW
85 - 175 kW
|
Power kW
85 - 143 kW
|
|
Engine capacity
1332 - 1991 cm3
|
Engine capacity
1490 - 1495 cm3
|
General |
|
|---|---|
|
Model Year
2024 - 2025
|
Model Year
2024 - 2025
|
|
CO2 Efficiency Class
B, D, E, F
|
CO2 Efficiency Class
C, E
|
|
Brand
Mercedes-Benz
|
Brand
MG
|
What drivetrain options does the Mercedes B Class have?
The Mercedes B Class is offered with Front-Wheel Drive or All-Wheel Drive.
The prices shown are estimates based on German list prices, adjusted for local VAT. Local registration taxes (e.g. NoVA, BPM or CO2 malus) are not included. This information is not legally binding.