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Kia Stonic vs Mazda MX-5 Roadster - Differences and prices compared

Compare performance (115 HP vs 132 HP), boot space and price (20100 £ vs 28400 £ ) at a glance. Find out which car is the better choice for you – Kia Stonic or Mazda MX-5 Roadster?

Kia Stonic

4.3 (1 Reviews)
rate

Mazda MX-5 Roadster

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 has a clearly advantage in terms of price – it starts at 20100 £ , while the Mazda MX-5 Roadster costs 28400 £ . That’s a price difference of around 8314 £.

Fuel consumption also shows a difference: Kia Stonic manages with 5.60 L and is therefore a bit more efficient than the Mazda MX-5 Roadster with 6.20 L. The difference is about 0.60 L per 100 km.

MX-5 Roadster

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 Mazda MX-5 Roadster has a somewhat edge – offering 132 HP compared to 115 HP. That’s roughly 17 HP more horsepower.

In acceleration from 0 to 100 km/h, the Mazda MX-5 Roadster is noticeable quicker – completing the sprint in 8.30 s, while the Kia Stonic takes 10.70 s. That’s about 2.40 s faster.

There’s also a difference in torque: Kia Stonic pulls noticeable stronger with 200 Nm compared to 152 Nm. That’s about 48 Nm difference.

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.

Seats: Kia Stonic offers significantly more seating capacity – 5 vs 2.

In curb weight, Mazda MX-5 Roadster is slightly lighter – 1078 kg compared to 1205 kg. The difference is around 127 kg.

In terms of boot space, the Kia Stonic offers clearly more room – 352 L compared to 130 L. That’s a difference of about 222 L.

When it comes to payload, Kia Stonic convincingly takes the win – 445 kg compared to 152 kg. That’s a difference of about 293 kg.

Who wins the race in the data check?

The Kia Stonic 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.

Kia Stonic
Mazda MX-5 Roadster

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis
from about £20,100
Stonic

Kia Stonic

  • Engine Type : Petrol, Petrol MHEV
  • Transmission : Manuel, Automatic
  • Drive Type : Front-Wheel Drive
  • Power HP : 100 - 115 HP
  • Consumption L/100km : 5.6 - 5.9 L
details

Kia Stonic

4.3 (1 Reviews)
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The Kia Stonic is a sprightly compact crossover that mixes city-friendly agility with a cheeky, modern design — perfect for buyers who want style without sacrificing sense. Inside it serves up clever practicality and a bright, well-equipped cabin, making everyday driving feel a bit more fun than it has any right to be.

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Mazda MX-5 Roadster

The Mazda MX-5 is a featherweight, open-top sports car that turns ordinary roads into a grin-inducing playground thanks to razor-sharp steering and an engaging, tactile gearbox. It won’t swallow the weekly shopping or ski bags, but for anyone after pure driving fun and sun-on-your-face weekends, few cars match its sheer charm and value.

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Reviews Kia Stonic

4.3 (1 Reviews)
rate

Reviews Mazda MX-5 Roadster

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Costs and Consumption
Price
20100 - 26600 £
Price
28400 - 33800 £
Consumption L/100km
5.6 - 5.9 L
Consumption L/100km
6.20 L
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
127 - 133 g/km
co2
140 g/km
Fuel tank capacity
45 L
Fuel tank capacity
-

Dimensions and Body
Body Type
SUV
Body Type
Roadster
Seats
5
Seats
2
Doors
5
Doors
-
Curb weight
1205 - 1270 kg
Curb weight
1078 kg
Trunk capacity
352 L
Trunk capacity
130 L
Length
4165 mm
Length
-
Width
1760 mm
Width
1735 mm
Height
1520 mm
Height
-
Max trunk capacity
1155 L
Max trunk capacity
-
Payload
440 - 445 kg
Payload
152 kg

Engine and Performance
Engine Type
Petrol, Petrol MHEV
Engine Type
Petrol
Transmission
Manuel, Automatic
Transmission
Manuel
Transmission Detail
Manual Gearbox, Dual-Clutch Automatic
Transmission Detail
Manual Gearbox
Drive Type
Front-Wheel Drive
Drive Type
Rear-Wheel Drive
Power HP
100 - 115 HP
Power HP
132 HP
Acceleration 0-100km/h
10.7 - 12.1 s
Acceleration 0-100km/h
8.30 s
Max Speed
179 - 182 km/h
Max Speed
-
Torque
172 - 200 Nm
Torque
152 Nm
Number of Cylinders
3
Number of Cylinders
4
Power kW
74 - 85 kW
Power kW
97 kW
Engine capacity
998 cm3
Engine capacity
1496 cm3

General
Model Year
2025
Model Year
2025
CO2 Efficiency Class
D
CO2 Efficiency Class
E
Brand
Kia
Brand
Mazda

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Is the Kia Stonic offered with different drivetrains?

The Kia Stonic is offered with 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.