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Mazda CX-30 vs Mercedes B Class comparison

Compare performance (186 HP vs 238 HP), boot space and price (25,200 £ vs 33,100 £ ) at a glance. Find out which car is the better choice for you – Mazda CX-30 or Mercedes B Class?

Mazda CX-30 vs Mercedes B Class: Key differences

Mazda CX-30

4.6 (5 Reviews)
rate
  • clearly cheaper
details

Mercedes B Class

4.9 (5 Reviews)
rate
  • markedly more power
  • moderately more efficient
  • noticeably quicker 0–100 km/h
  • very slightly lighter
  • marginally more trunk space
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

CX-30

Mazda CX-30 vs. Mercedes B-Klasse: Unveiling the Ultimate Crossover Contenders

In the dynamic world of automotive engineering, the Mazda CX-30 and Mercedes B-Klasse have carved niches for themselves, attracting attention with their distinct attributes. As 2024 rolls in, these vehicles continue to evolve, offering impressive advancements that cater to modern drivers' desires. This article delves into the unique features and technical specifications of each model, guiding you to understand what makes them stand out in the competitive landscape.

B Class

Body Design and Dimensions

The Mazda CX-30 comes as a sleek and sporty SUV, emphasizing its robust and aerodynamic aesthetics. Measuring 4395 mm in length, 1795 mm in width, and 1540 mm in height, it offers a compact yet spacious profile suitable for urban and off-road adventures. Its trunk capacity of 430 liters ensures flexibility for various storage needs.

In contrast, the Mercedes B-Klasse embraces its MPV heritage with a sleek and versatile body. It stretches slightly longer at 4419 mm and stands taller at 1562 mm, providing a spacious interior that complements its trunk capacity of 455 liters, emphasizing functionality and comfort for family expeditions.

CX-30

Power and Performance

The Mazda CX-30 boasts a choice between front-wheel drive and all-wheel drive systems, powered by a petrol MHEV engine. With power outputs ranging from 140 to 186 HP and torque between 238 to 240 Nm, it achieves an impressive acceleration from 0 to 100 km/h in just 8.3 to 10.3 seconds. Its top speed varies from 191 km/h to 204 km/h, allowing for spirited driving experiences.

Conversely, the Mercedes B-Klasse offers a diverse powertrain lineup, including petrol MHEV, diesel, and plug-in hybrid options. Delivering power between 116 and 238 HP and torque up to 450 Nm, its acceleration capabilities range from 6.5 to 10 seconds for 0 to 100 km/h, accommodating a broader spectrum of driving styles. Hybrid enthusiasts will appreciate the 83 km electric range, enhancing efficiency and reducing emission footprints.

B Class

Transmission and Efficiency

The Mazda CX-30 presents drivers with flexibility in transmission preference, providing both manual and automatic gearbox options. Its fuel efficiency ranges between 5.7 and 6.6 L/100km, ensuring an economical drive.

In contrast, the Mercedes B-Klasse standardizes on a dual-clutch automatic transmission, optimizing performance and seamless gear shifts. Its fuel consumption lies between 0.8 and 7.1 L/100km, particularly advantageous for the plug-in hybrid variant, which benefits from superior efficiency and an impressive CO2 efficiency class B rating.

CX-30

Comfort and Technology Innovations

Mazda’s CX-30 offers a minimalist yet sophisticated interior, championing functionality without compromising on comfort. It caters to five passengers and includes advanced safety systems to enhance the driving experience.

The Mercedes B-Klasse, known for its luxurious approach, provides innovative infotainment systems and top-tier comfort for its occupants. Seating five as well, it establishes a premium atmosphere, supported by cutting-edge technology that elevates convenience and safety.

B Class

Conclusion: Choosing Your Ideal Companion

The choice between the Mazda CX-30 and Mercedes B-Klasse depends significantly on individual preferences. The CX-30 appeals to those valuing sporty design and versatile performance, while the B-Klasse attracts drivers looking for a versatile, efficient MPV with premium features. Both models reflect their brands' commitment to innovation and performance, ensuring a satisfying ownership experience in today's diverse automotive landscape.

Frequently compared as well

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
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 …

Here’s where it gets real: The technical differences in detail

CX-30

Costs and Efficiency:

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

Mazda CX-30 is clearly cheaper – starting at 25,200 £ , while the Mercedes B Class costs 33,100 £ . That’s a price difference of around 7,895 £.

Fuel consumption also shows a difference: the Mercedes B Class uses 5.1 L/100km and is moderately more efficient than the Mazda CX-30 with 5.7 L/100km. The difference is about 0.6 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 Mercedes B Class offers markedly more power – delivering 238 HP compared to 186 HP. That’s roughly 52 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes B Class is noticeably quicker – completing the sprint in 6.5 s, while the Mazda CX-30 takes 8.3 s. That’s about 1.8 s quicker.

There’s also a difference in torque: the Mercedes B Class delivers markedly more torque with 400 Nm compared to 240 Nm. That’s about 160 Nm more.

CX-30

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 very slightly lighter – 1,405 kg compared to 1,455 kg. The difference is around 50 kg.

Looking at boot space, the Mercedes B Class offers marginally more boot space – 455 L compared to 430 L. That’s a difference of about 25 L.

When it comes to payload, the Mercedes B Class carries very slightly more – 550 kg compared to 496 kg. That’s a difference of about 54 kg.

Who wins the race in the data check?

The Mercedes B Class 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 £33,100
B Class

Mercedes B Class

  • Engine Type : Petrol MHEV, Diesel
  • Transmission : Automatic
  • Drive Type : Front-Wheel Drive, All-Wheel Drive
  • Power HP : 116 - 238 HP
  • Consumption L/100km : 5.1 - 6.9 L/100km
details
Mazda CX-30
Mercedes B Class

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Mazda CX-30

The Mazda CX-30 blends sleek coupe-like lines with the practicality of a compact crossover, feeling more premium than its price tag suggests. It’s a joy to drive for anyone who likes a taut chassis and an interior that treats daily commutes like a small luxury escape.

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Reviews Mazda CX-30

4.6 (5 Reviews)
rate
Rafa
25 Apr 2026, 12:50:49

I wouldn't pay more than 40,000 for a 1.5 L engine — that's excessive.

Stefan Zapp
31 Jan 2026, 22:32:56

I drive a CX30 with 150 hp. I'm very satisfied with the car.

How do you mainly use this car? (optional): Leisure / Weekend driver
Efficiency / Consumption & Range
Comfort & Interior
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money

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

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Mazda CX-30
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In the tussle between the cheeky Ford Puma and the stylish Mazda CX-30, the Puma serves up playful handling, clever practicality and sharper value, while the CX-30 rewards you with a more premium cabin and composed, grown-up refinement. Choose the Puma for everyday fun and sensible running costs; …
Mazda CX-30
Nissan Qashqai
VS
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Mazda CX-30
VW T-Roc
VS
In the competitive world of compact SUVs, the Mazda CX-30 and the VW T-Roc both bring distinct flavors to the table. The Mazda CX-30 is celebrated for its elegant design and engaging driving dynamics, offering a luxurious feel with its high-quality interior and impressive handling. Meanwhile, the …
Mazda CX-30
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Unsure whether the Mazda CX-30 or the Mazda CX-6e is the better match? Compare both models directly and discover differences in power, efficiency, comfort and value for money — all summarized in one easy view to support your decision.
BMW 2 Series Active Tourer
Mercedes B Class
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Unsure whether the BMW 2 Series Active Tourer or the Mercedes B Class is the better match? Compare both models directly and discover differences in power, efficiency, comfort and value for money — all summarized in one easy view to support your decision.
Lexus UX
Mazda CX-30
VS
In a head-to-head comparison between the Lexus UX and the Mazda CX-30, both models stand out in the competitive compact crossover segment, yet they cater to different priorities. The Lexus UX excels with its luxurious interior and top-notch safety features, making it a desirable choice for those …
Mazda CX-30
Skoda Kamiq
VS
The Mazda CX-30 is the stylish, driver's compact SUV that blends near-premium looks and crisp handling, while the Škoda Kamiq plays the sensible card with clever packaging, a roomier boot and lower running costs. Pick the CX-30 if you want a more emotional, fun-to-drive compact with a nicer …
Mazda CX-30
Mercedes B Class

Costs and Consumption
Price
25,200 - 36,800 £
Price
33,100 - 52,500 £
Consumption L/100km
5.7 - 6.6 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
129 - 148 g/km
co2
133 - 156 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
SUV
Body Type
MPV
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
1,455 - 1,587 kg
Curb weight
1,405 - 1,565 kg
Trunk capacity
422 - 430 L
Trunk capacity
445 - 455 L
Length
-
Length
-
Width
1,795 mm
Width
1,796 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
458 - 496 kg
Payload
515 - 550 kg

Engine and Performance
Engine Type
Petrol MHEV
Engine Type
Petrol MHEV, Diesel
Transmission
Manuel, Automatic
Transmission
Automatic
Transmission Detail
Manual Gearbox, Automatic Gearbox
Transmission Detail
Dual-Clutch Automatic
Drive Type
Front-Wheel Drive, All-Wheel Drive
Drive Type
Front-Wheel Drive, All-Wheel Drive
Power HP
140 - 186 HP
Power HP
116 - 238 HP
Acceleration 0-100km/h
8.3 - 10.3 s
Acceleration 0-100km/h
6.5 - 10 s
Max Speed
-
Max Speed
-
Torque
238 - 240 Nm
Torque
200 - 400 Nm
Number of Cylinders
4
Number of Cylinders
4
Power kW
103 - 137 kW
Power kW
85 - 175 kW
Engine capacity
1,998 - 2,488 cm3
Engine capacity
1,332 - 1,991 cm3

General
Model Year
2025
Model Year
2025
CO2 Efficiency Class
D, E
CO2 Efficiency Class
D, E, F
Brand
Mazda
Brand
Mercedes-Benz
What drive types are available for the Mazda CX-30?

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.