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Kia Stonic vs Hyundai IONIQ 9 comparison

Compare performance (115 HP vs 428 HP), boot space and price (20,400 £ vs 59,900 £ ) at a glance. Find out which car is the better choice for you – Kia Stonic or Hyundai IONIQ 9?

Kia Stonic vs Hyundai IONIQ 9: Key differences

Kia Stonic

4.6 (2 Reviews)
rate
  • significantly cheaper
  • substantially lighter
  • marginally more trunk space
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Hyundai IONIQ 9

  • clearly more power
  • significantly quicker 0–100 km/h
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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 significantly cheaper – starting at 20,400 £ , while the Hyundai IONIQ 9 costs 59,900 £ . That’s a price difference of around 39,480 £.

IONIQ 9

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 Hyundai IONIQ 9 offers clearly more power – delivering 428 HP compared to 115 HP. That’s roughly 313 HP more horsepower.

When accelerating from 0 to 100 km/h, the Hyundai IONIQ 9 is significantly quicker – completing the sprint in 5.2 s, while the Kia Stonic takes 10.7 s. That’s about 5.5 s quicker.

There’s also a difference in torque: the Hyundai IONIQ 9 delivers clearly more torque with 700 Nm compared to 200 Nm. That’s about 500 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.

Seats: Hyundai IONIQ 9 offers more seats – 7 vs 5.

In terms of curb weight, Kia Stonic is substantially lighter – 1,205 kg compared to 2,594 kg. The difference is around 1,389 kg.

Looking at boot space, the Kia Stonic offers marginally more boot space – 352 L compared to 338 L. That’s a difference of about 14 L.

When it comes to payload, the Hyundai IONIQ 9 carries markedly more – 643 kg compared to 445 kg. That’s a difference of about 198 kg.

Who wins the race in the data check?

The Hyundai IONIQ 9 stands well ahead of its rival 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 £59,900
IONIQ 9

Hyundai IONIQ 9

  • Engine Type Electric
  • Transmission Automatic
  • Drive Type Rear-Wheel Drive, All-Wheel Drive
  • Power HP 218 - 428 HP
  • Consumption kWh/100km 19.9 - 20.6 kWh/100km
  • Electric Range 600 - 620 km
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Frequently compared as well

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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

Hyundai IONIQ 9

The Hyundai IONIQ 9 is a bold step forward in the automotive world, combining cutting-edge electric technology with a sleek and modern design. This model stands out with its spacious interior and advanced features, ensuring both comfort and convenience for drivers and passengers alike. As Hyundai pushes the envelope in eco-friendly innovation, the IONIQ 9 represents the future of sustainable driving with its impressive range and performance capabilities.

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Reviews Hyundai IONIQ 9

No reviews yet. Share your experience and help others decide.

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Hyundai IONIQ 9

Costs and Consumption
Price
20,400 - 26,800 £
Price
59,900 - 75,500 £
Consumption L/100km
5.6 - 5.7 L/100km
Consumption L/100km
-
Consumption kWh/100km
-
Consumption kWh/100km
19.9 - 20.6 kWh/100km
Electric Range
-
Electric Range
600 - 620 km
Battery Capacity
-
Battery Capacity
-
co2
126 - 128 g/km
co2
0 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
SUV
Body Type
SUV
Seats
5
Seats
7
Doors
-
Doors
-
Curb weight
1,205 - 1,270 kg
Curb weight
2,594 - 2,689 kg
Trunk capacity
352 L
Trunk capacity
338 L
Length
-
Length
-
Width
1,760 mm
Width
1,980 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
440 - 445 kg
Payload
586 - 643 kg

Engine and Performance
Engine Type
Petrol, Petrol MHEV
Engine Type
Electric
Transmission
Manuel, Automatic
Transmission
Automatic
Transmission Detail
Manual Gearbox, Dual-Clutch Automatic
Transmission Detail
Reduction Gearbox
Drive Type
Front-Wheel Drive
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Power HP
100 - 115 HP
Power HP
218 - 428 HP
Acceleration 0-100km/h
10.7 - 12.1 s
Acceleration 0-100km/h
5.2 - 9.4 s
Max Speed
-
Max Speed
-
Torque
172 - 200 Nm
Torque
350 - 700 Nm
Number of Cylinders
3
Number of Cylinders
-
Power kW
74 - 85 kW
Power kW
160 - 315 kW
Engine capacity
998 cm3
Engine capacity
-

General
Model Year
2025
Model Year
2025
CO2 Efficiency Class
D
CO2 Efficiency Class
A
Brand
Kia
Brand
Hyundai
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.