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Kia Stonic vs Mazda CX-30 comparison

Compare performance (115 HP vs 186 HP), boot space and price (20,400 £ vs 25,200 £ ) at a glance. Find out which car is the better choice for you – Kia Stonic or Mazda CX-30?

Kia Stonic vs Mazda CX-30: Key differences

Kia Stonic

4.6 (2 Reviews)
rate
  • visibly cheaper
  • only slightly more efficient
  • clearly lighter
details

Mazda CX-30

4.5 (6 Reviews)
rate
  • noticeably more power
  • visibly quicker 0–100 km/h
  • somewhat 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

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

Stonic

Costs and Efficiency:

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

Kia Stonic is visibly cheaper – starting at 20,400 £ , while the Mazda CX-30 costs 25,200 £ . That’s a price difference of around 4,843 £.

Fuel consumption also shows a difference: the Kia Stonic uses 5.6 L/100km and is only slightly more efficient than the Mazda CX-30 with 5.7 L/100km. The difference is about 0.1 L/100km.

CX-30

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 Mazda CX-30 offers noticeably more power – delivering 186 HP compared to 115 HP. That’s roughly 71 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mazda CX-30 is visibly quicker – completing the sprint in 8.3 s, while the Kia Stonic takes 10.7 s. That’s about 2.4 s quicker.

There’s also a difference in torque: the Mazda CX-30 delivers a bit more torque with 240 Nm compared to 200 Nm. That’s about 40 Nm more.

Stonic

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, Kia Stonic is clearly lighter – 1,205 kg compared to 1,455 kg. The difference is around 250 kg.

Looking at boot space, the Mazda CX-30 offers somewhat more boot space – 430 L compared to 352 L. That’s a difference of about 78 L.

When it comes to payload, the Mazda CX-30 carries moderately more – 496 kg compared to 445 kg. That’s a difference of about 51 kg.

Who wins the race in the data check?

The Mazda CX-30 is decisively ahead 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 £25,200
CX-30

Mazda CX-30

  • Engine Type : Petrol MHEV
  • Transmission : Manuel, Automatic
  • Drive Type : Front-Wheel Drive, All-Wheel Drive
  • Power HP : 140 - 186 HP
  • Consumption L/100km : 5.7 - 6.6 L/100km
details

Frequently compared as well

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Small crossover, big decisions: the Hyundai Bayon and Kia Stonic duke it out in the compact SUV ring, each promising city-smarts, style and sensible running costs. One brings bold tech and fresh looks, the other leans on practicality and value — so let’s see which small SUV deserves your keys (and …
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Mazda CX-30

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Kia Stonic

The Kia Stonic is a compact crossover that pairs nimble city manners with a surprisingly spacious and comfortable cabin. It’s a practical, well-equipped choice for buyers who value sensible features, approachable styling and easy everyday usability.

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Reviews Kia Stonic

4.6 (2 Reviews)
rate
Jan
18 Mar 2026, 07:19:10

Very good car, uses little fuel, nothing's gone wrong in 4 years, no breakdowns.

How do you mainly use this car? (optional): Commuter (short/medium distance)
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money
Ennio
4 Feb 2026, 13:19:36

I'm very satisfied — I have a Stonic Black Edition hybrid, and I haven't had any problems after two years.

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 CX-30

The Mazda CX-30 blends Mazda’s upscale styling with a compact crossover body, offering a refined interior and engaging driving dynamics. It’s a practical choice for buyers who want a premium feel and agile handling in a city-friendly package.

details
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Reviews Mazda CX-30

4.5 (6 Reviews)
rate
Michele
8 May 2026, 17:46:44

Quiet; well finished, predominantly analog dashboard; excellent value for money

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
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

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Kia Stonic
Mazda CX-30

Costs and Consumption
Price
20,400 - 26,800 £
Price
25,200 - 36,800 £
Consumption L/100km
5.6 - 5.7 L/100km
Consumption L/100km
5.7 - 6.6 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
126 - 128 g/km
co2
129 - 148 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
SUV
Body Type
SUV
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
1,205 - 1,270 kg
Curb weight
1,455 - 1,587 kg
Trunk capacity
352 L
Trunk capacity
422 - 430 L
Length
-
Length
-
Width
1,760 mm
Width
1,795 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
440 - 445 kg
Payload
458 - 496 kg

Engine and Performance
Engine Type
Petrol, Petrol MHEV
Engine Type
Petrol MHEV
Transmission
Manuel, Automatic
Transmission
Manuel, Automatic
Transmission Detail
Manual Gearbox, Dual-Clutch Automatic
Transmission Detail
Manual Gearbox, Automatic Gearbox
Drive Type
Front-Wheel Drive
Drive Type
Front-Wheel Drive, All-Wheel Drive
Power HP
100 - 115 HP
Power HP
140 - 186 HP
Acceleration 0-100km/h
10.7 - 12.1 s
Acceleration 0-100km/h
8.3 - 10.3 s
Max Speed
-
Max Speed
-
Torque
172 - 200 Nm
Torque
238 - 240 Nm
Number of Cylinders
3
Number of Cylinders
4
Power kW
74 - 85 kW
Power kW
103 - 137 kW
Engine capacity
998 cm3
Engine capacity
1,998 - 2,488 cm3

General
Model Year
2025
Model Year
2025
CO2 Efficiency Class
D
CO2 Efficiency Class
D, E
Brand
Kia
Brand
Mazda
Is the Kia Stonic offered with different drivetrains?

The Kia Stonic is offered with Front-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.