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Kia Stonic vs Mazda 3 Hatchback comparison

Compare performance (115 HP vs 186 HP), boot space and price (20,400 £ vs 25,000 £ ) at a glance. Find out which car is the better choice for you – Kia Stonic or Mazda 3 Hatchback?

Kia Stonic vs Mazda 3 Hatchback: Key differences

Kia Stonic

4.6 (2 Reviews)
rate
  • markedly cheaper
  • slightly lighter
  • very slightly more trunk space
details

Mazda 3 Hatchback

5 (1 Reviews)
rate
  • noticeably more power
  • clearly quicker 0–100 km/h
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 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.

Kia Stonic is markedly cheaper – starting at 20,400 £ , while the Mazda 3 Hatchback costs 25,000 £ . That’s a price difference of around 4,629 £.

Both cars consume an average of 5.6 L/100km – no difference here.

3 Hatchback

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 3 Hatchback 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 3 Hatchback is clearly quicker – completing the sprint in 8 s, while the Kia Stonic takes 10.7 s. That’s about 2.7 s quicker.

There’s also a difference in torque: the Mazda 3 Hatchback delivers a bit more torque with 240 Nm compared to 200 Nm. That’s about 40 Nm more.

Stonic

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, Kia Stonic is slightly lighter – 1,205 kg compared to 1,417 kg. The difference is around 212 kg.

Looking at boot space, the Kia Stonic offers very slightly more boot space – 352 L compared to 351 L. That’s a difference of about 1 L.

When it comes to payload, the Mazda 3 Hatchback carries a bit more – 502 kg compared to 445 kg. That’s a difference of about 57 kg.

Who wins the race in the data check?

The Mazda 3 Hatchback is far ahead 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 £25,000
3 Hatchback

Mazda 3 Hatchback

  • Engine Type Petrol MHEV
  • Transmission Manuel, Automatic
  • Drive Type Front-Wheel Drive, All-Wheel Drive
  • Power HP 140 - 186 HP
  • Consumption L/100km 5.6 - 6.5 L/100km
details

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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 3 Hatchback

The Mazda 3 hatchback blends elegant design with a surprisingly sporty drive, giving a cabin that feels more upscale than you’d expect for the segment. Practical enough for everyday life yet eager to entertain behind the wheel, it’s a smart, good-humored choice that makes even grocery runs feel like a mini escape.

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Reviews Mazda 3 Hatchback

5 (1 Reviews)
rate
j m
29 Jun 2026, 22:06:55

power
efficiency and low consumption
driving pleasure
wonderful e-drive and head-up projection display on the windshield

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Kia Stonic
Mazda 3 Hatchback

Costs and Consumption
Price
20,400 - 26,800 £
Price
25,000 - 36,000 £
Consumption L/100km
5.6 - 5.7 L/100km
Consumption L/100km
5.6 - 6.5 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
126 - 128 g/km
co2
126 - 146 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
SUV
Body Type
Hatchback
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
1,205 - 1,270 kg
Curb weight
1,417 - 1,529 kg
Trunk capacity
352 L
Trunk capacity
351 L
Length
-
Length
-
Width
1,760 mm
Width
1,795 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
440 - 445 kg
Payload
487 - 502 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 - 9.8 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
2026
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.