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Mazda CX-5 vs Mercedes B Class comparison

Compare performance (141 HP vs 238 HP), boot space and price (30,000 £ vs 33,100 £ ) at a glance. Find out which car is the better choice for you – Mazda CX-5 or Mercedes B Class?

Mazda CX-5 vs Mercedes B Class: Key differences

Mazda CX-5

4.7 (8 Reviews)
rate
  • a bit cheaper
  • visibly more trunk space
details

Mercedes B Class

4.9 (5 Reviews)
rate
  • substantially more power
  • visibly more efficient
  • considerably quicker 0–100 km/h
  • slightly lighter
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

CX-5

Costs and Efficiency:

Price and efficiency are often the first things buyers look at. Here it becomes clear which model has the long-term edge – whether at the pump, the plug, or in purchase price.

Mazda CX-5 is a bit cheaper – starting at 30,000 £ , while the Mercedes B Class costs 33,100 £ . That’s a price difference of around 3,138 £.

Fuel consumption also shows a difference: the Mercedes B Class uses 5.1 L/100km and is visibly more efficient than the Mazda CX-5 with 7 L/100km. The difference is about 1.9 L/100km.

B Class

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 Mercedes B Class offers substantially more power – delivering 238 HP compared to 141 HP. That’s roughly 97 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes B Class is considerably quicker – completing the sprint in 6.5 s, while the Mazda CX-5 takes 10.5 s. That’s about 4 s quicker.

There’s also a difference in torque: the Mercedes B Class delivers considerably more torque with 400 Nm compared to 238 Nm. That’s about 162 Nm more.

CX-5

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 terms of curb weight, Mercedes B Class is slightly lighter – 1,405 kg compared to 1,629 kg. The difference is around 224 kg.

Looking at boot space, the Mazda CX-5 offers visibly more boot space – 583 L compared to 455 L. That’s a difference of about 128 L.

When it comes to payload, the Mazda CX-5 carries barely more – 601 kg compared to 550 kg. That’s a difference of about 51 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 : 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

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
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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 …
Mazda CX-5
Mercedes B Class

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Mazda CX-5

The Mazda CX-5 blends elegant, athletic styling with a surprisingly engaging driving character, turning routine trips into small, satisfying adventures. Inside it feels thoughtfully built and comfortable, offering sensible practicality and a premium feel that punches above its price.

details
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Reviews Mazda CX-5

4.7 (8 Reviews)
rate
Bengt
25 Jan 2026, 14:05:09

I've owned several Volvos, but I drive a Mazda now and would never switch back.

How do you mainly use this car? (optional): Long-distance driver
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
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.

details
18C0947_011
18C0947_009
18C0953_005
18C0953_035
18C0947_044

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

Frequently compared as well

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If you want a compact, affordable SUV that’s fun to drive and sensible for most families, the Mazda CX-5 remains the clever everyday choice; if you crave more space, a buttoned-up premium cabin and the option of a potent straight-six or PHEV, the Mazda CX-60 steps up as the grown-up alternative. …
Ford Kuga
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Lexus NX
Mazda CX-5
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Mazda CX-5
Mercedes B Class

Costs and Consumption
Price
30,000 - 39,500 £
Price
33,100 - 52,500 £
Consumption L/100km
7 - 7.4 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
157 - 168 g/km
co2
133 - 156 g/km
Fuel tank capacity
56 - 58 L
Fuel tank capacity
-

Dimensions and Body
Body Type
SUV
Body Type
MPV
Seats
5
Seats
5
Doors
5
Doors
-
Curb weight
1,629 - 1,671 kg
Curb weight
1,405 - 1,565 kg
Trunk capacity
466 - 583 L
Trunk capacity
445 - 455 L
Length
4,690 mm
Length
-
Width
1,860 mm
Width
1,796 mm
Height
1,695 mm
Height
-
Max trunk capacity
2,019 L
Max trunk capacity
-
Payload
601 kg
Payload
515 - 550 kg

Engine and Performance
Engine Type
Petrol MHEV
Engine Type
Petrol MHEV, Diesel
Transmission
Automatic
Transmission
Automatic
Transmission Detail
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
141 HP
Power HP
116 - 238 HP
Acceleration 0-100km/h
10.5 - 10.9 s
Acceleration 0-100km/h
6.5 - 10 s
Max Speed
195 km/h
Max Speed
-
Torque
238 Nm
Torque
200 - 400 Nm
Number of Cylinders
4
Number of Cylinders
4
Power kW
104 kW
Power kW
85 - 175 kW
Engine capacity
2,488 cm3
Engine capacity
1,332 - 1,991 cm3

General
Model Year
2025
Model Year
2025
CO2 Efficiency Class
F
CO2 Efficiency Class
D, E, F
Brand
Mazda
Brand
Mercedes-Benz
Is the Mazda CX-5 offered with different drivetrains?

The Mazda CX-5 is available as 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.