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Mazda MX-30 vs Mercedes B Class comparison

Compare performance (170 HP vs 238 HP), boot space and price (30800 £ vs 33100 £ ) at a glance. Find out which car is the better choice for you – Mazda MX-30 or Mercedes B Class?

Mazda MX-30 vs Mercedes B Class: Key differences

Mazda MX-30

4.6 (1 Reviews)
rate
  • slight cheaper
  • barely noticeable more electric range

Mercedes B Class

4.9 (5 Reviews)
rate
  • clearly perceptible more power
  • noticeable quicker from 0–100 km/h
  • evident lighter
  • clearly perceptible more trunk space

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

MX-30

Costs and Efficiency:

Price and efficiency are key factors when choosing a car – and this is often where the real differences emerge.

Mazda MX-30 has a slight advantage in terms of price – it starts at 30800 £ , while the Mercedes B Class costs 33100 £ . That’s a price difference of around 2281 £.

As for electric range, the Mazda MX-30 performs barely noticeable better – achieving up to 85 km, about 2 km more than the Mercedes B Class.

B Class

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 clearly perceptible edge – offering 238 HP compared to 170 HP. That’s roughly 68 HP more horsepower.

In acceleration from 0 to 100 km/h, the Mercedes B Class is noticeable quicker – completing the sprint in 6.50 s, while the Mazda MX-30 takes 9.10 s. That’s about 2.60 s faster.

In terms of top speed, the Mercedes B Class performs evident better – reaching 223 km/h, while the Mazda MX-30 tops out at 140 km/h. The difference is around 83 km/h.

MX-30

Space and Everyday Use:

Beyond pure performance, interior space and usability matter most in daily life. This is where you see which car is more practical and versatile.

Both vehicles offer seating for 5 people.

In curb weight, Mercedes B Class is evident lighter – 1405 kg compared to 1849 kg. The difference is around 444 kg.

In terms of boot space, the Mercedes B Class offers clearly perceptible more room – 455 L compared to 350 L. That’s a difference of about 105 L.

In maximum load capacity, the Mercedes B Class performs a bit better – up to 1440 L, which is about 285 L more than the Mazda MX-30.

When it comes to payload, Mercedes B Class noticeable takes the win – 550 kg compared to 402 kg. That’s a difference of about 148 kg.

Who wins the race in the data check?

The Mercedes B Class sits well ahead of its rival 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.

Frequently compared as well

Mercedes B Class
Mercedes GLA
VS
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
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 …
Mazda MX-30
Mercedes B Class

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis
from about £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
  • Electric Range : 83 km
details

Mazda MX-30

4.6 (1 Reviews)
rate

The Mazda MX-30 trades conventional EV practicality for a boutique vibe, wrapping easy urban agility and a stylish, artisan interior into a compact package that stands out in the crossover crowd. It’s ideal for city-minded buyers who value design and driving feel over long-distance trips, and its quirky details prove Mazda can be playful without losing its driver-focused soul.

details
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2022_mazda_cx-30_src_spain_int_1_highres

Mercedes B Class

4.9 (5 Reviews)
rate

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
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Reviews Mazda MX-30

4.6 (1 Reviews)
rate

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
Mazda MX-30
Mercedes B Class

Costs and Consumption
Price
30800 - 37100 £
Price
33100 - 52500 £
Consumption L/100km
-
Consumption L/100km
2.5 - 6.9 L
Consumption kWh/100km
18.30 kWh
Consumption kWh/100km
-
Electric Range
85 km
Electric Range
83 km
Battery Capacity
-
Battery Capacity
12.90 kWh
co2
22 g/km
co2
56 - 156 g/km
Fuel tank capacity
-
Fuel tank capacity
35 L

Dimensions and Body
Body Type
SUV
Body Type
MPV
Seats
5
Seats
5
Doors
5
Doors
5
Curb weight
1849 kg
Curb weight
1405 - 1745 kg
Trunk capacity
332 - 350 L
Trunk capacity
405 - 455 L
Length
4395 mm
Length
4419 mm
Width
1848 mm
Width
1796 mm
Height
1555 mm
Height
1562 mm
Max trunk capacity
1137 - 1155 L
Max trunk capacity
1440 L
Payload
402 kg
Payload
505 - 550 kg

Engine and Performance
Engine Type
Plugin Hybrid
Engine Type
Plugin Hybrid, Petrol MHEV, Diesel
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Reduction Gearbox
Transmission Detail
Dual-Clutch Automatic
Drive Type
Front-Wheel Drive
Drive Type
Front-Wheel Drive, All-Wheel Drive
Power HP
170 HP
Power HP
116 - 238 HP
Acceleration 0-100km/h
9.10 s
Acceleration 0-100km/h
6.5 - 10 s
Max Speed
140 km/h
Max Speed
223 km/h
Torque
-
Torque
200 - 450 Nm
Number of Cylinders
-
Number of Cylinders
4
Power kW
125 kW
Power kW
85 - 175 kW
Engine capacity
830 cm3
Engine capacity
1332 - 1991 cm3

General
Model Year
2025
Model Year
2024 - 2025
CO2 Efficiency Class
B
CO2 Efficiency Class
B, D, E, F
Brand
Mazda
Brand
Mercedes-Benz

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What drivetrain options does the Mazda MX-30 have?

Available configurations include Front-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.