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Kia Stonic vs Mitsubishi ASX comparison

Compare performance (115 HP vs 158 HP), boot space and price (20,100 £ vs 21,400 £ ) at a glance. Find out which car is the better choice for you – Kia Stonic or Mitsubishi ASX?

Kia Stonic vs Mitsubishi ASX: Key differences

Kia Stonic

4.6 (2 Reviews)
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  • only slightly cheaper
  • only slightly lighter
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Mitsubishi ASX

4.9 (2 Reviews)
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  • noticeably more power
  • noticeably more efficient
  • visibly quicker 0–100 km/h
  • noticeably more trunk space
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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

Stonic

Kia Stonic vs Mitsubishi ASX: A Comprehensive Comparison

The compact SUV market has witnessed a surge in popularity, with manufacturers jostling to capture the attention of consumers seeking versatility, style, and innovation. The Kia Stonic and the Mitsubishi ASX are two prominent contenders in this segment, each offering a unique set of features and specifications. In this article, we will delve into the technical aspects and innovations of both models to help you decide which vehicle suits your lifestyle best.

ASX

Engine and Performance

The Kia Stonic offers a selection of engine options, including petrol and petrol mild hybrid (MHEV) variants. With power outputs ranging from 79 HP to 100 HP, the Stonic boasts competitive fuel efficiency, consuming between 5.5 to 5.8 L/100km. Acceleration from 0-100 km/h can be achieved in as little as 11.3 seconds, depending on the configuration, while the top speed reaches approximately 179 km/h. The Stonic is powered by a front-wheel-drive layout and can be paired with either a manual or dual-clutch automatic transmission.

In contrast, the Mitsubishi ASX presents a broader spectrum of powertrain options, including petrol, petrol MHEV, and a full hybrid model. The ASX's power ranges from 91 HP to a robust 158 HP. For those looking for performance, the ASX surprises with a 0-100 km/h acceleration time of just 8.5 seconds in the more powerful configurations. Fuel consumption is commendably efficient, with some models achieving as low as 4.7 L/100km. The ASX also employs a front-wheel-drive system and can be equipped with either a manual or automatic transmission.

Stonic

Dimensions and Practicality

When it comes to dimensions, the Kia Stonic measures 4140 mm in length, 1760 mm in width, and stands 1505 mm tall. Its compact size makes it easy to maneuver through urban environments while providing ample space for up to five occupants. The Stonic also features a trunk capacity of 352 liters, which is decent for its class and offers additional practicality for everyday use.

On the other hand, the Mitsubishi ASX is slightly larger, with a length of 4239 mm, a width of 1797 mm, and a height of 1575 mm. This extra size translates into a more generous trunk capacity of 484 liters, making it a more viable option for those needing to carry larger loads or engage in outdoor activities. The ASX comfortably accommodates five passengers while providing a more spacious cabin experience.

ASX

Fuel Efficiency and Environmental Impact

Both SUVs are designed to meet modern fuel efficiency standards and environmental considerations. The Kia Stonic achieves a CO2 emission of up to 132 g/km, falling within the D efficiency class. Its lightweight construction and efficient engines help it maintain a competitive edge in the compact SUV market.

The Mitsubishi ASX, meanwhile, takes a slight lead with some versions achieving CO2 emissions as low as 107 g/km, placing it in the C efficiency class. This not only makes it a greener choice but also appeals to environmentally-conscious consumers. The ASX's efficiency is enhanced by the availability of hybrid options, pushing it to meet the demands of an evolving market focused on sustainability.

Stonic

Technological Innovations

In terms of technology, the Kia Stonic is equipped with a range of modern features, including a touchscreen infotainment system, smartphone connectivity via Apple CarPlay and Android Auto, and advanced safety options. These features ensure that drivers and passengers can enjoy connected and safe journeys.

The Mitsubishi ASX also integrates a host of technological advancements, featuring an intuitive infotainment system, driver-assistance technologies, and an available smartphone connectivity suite. The inclusion of advanced safety features such as lane-keeping assist and adaptive cruise control further enhances its appeal, making it an attractive choice for families and tech-savvy drivers alike.

ASX

Conclusion

Both the Kia Stonic and Mitsubishi ASX present compelling arguments in the crowded compact SUV segment. The Stonic shines with its efficiency and agile handling, making it perfect for city dwellers. Conversely, the ASX offers a more spacious interior and hybrid options, ideal for those seeking versatility and sustainability.

Ultimately, your choice between the two will depend on your specific needs—whether it's performance, space, or eco-friendliness. Careful consideration of the technical aspects and innovations presented by both models will lead you to the right vehicle for your lifestyle.

Frequently compared as well

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

Stonic

Costs and Efficiency:

When it comes to price and running costs, the biggest differences usually appear. This is often where you see which car fits your budget better in the long run.

Kia Stonic is only slightly cheaper – starting at 20,100 £ , while the Mitsubishi ASX costs 21,400 £ . That’s a price difference of around 1,286 £.

Fuel consumption also shows a difference: the Mitsubishi ASX uses 4.4 L/100km and is noticeably more efficient than the Kia Stonic with 5.6 L/100km. The difference is about 1.2 L/100km.

ASX

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 Mitsubishi ASX offers noticeably more power – delivering 158 HP compared to 115 HP. That’s roughly 43 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mitsubishi ASX is visibly quicker – completing the sprint in 8.9 s, while the Kia Stonic takes 10.7 s. That’s about 1.8 s quicker.

There’s also a difference in torque: the Mitsubishi ASX delivers somewhat more torque with 245 Nm compared to 200 Nm. That’s about 45 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 only slightly lighter – 1,205 kg compared to 1,296 kg. The difference is around 91 kg.

Looking at boot space, the Mitsubishi ASX offers noticeably more boot space – 484 L compared to 352 L. That’s a difference of about 132 L.

Maximum payload is identical – both can carry up to 445 kg.

Who wins the race in the data check?

The Mitsubishi ASX holds a decisive overall lead 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 £21,400
ASX

Mitsubishi ASX

  • Engine Type : Full Hybrid, Petrol, Petrol MHEV
  • Transmission : Automatic, Manuel
  • Drive Type : Front-Wheel Drive
  • Power HP : 115 - 158 HP
  • Consumption L/100km : 4.4 - 6 L/100km
details
Kia Stonic
Mitsubishi ASX

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 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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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

Mitsubishi ASX

The Mitsubishi ASX is a compact crossover that mixes practicality with a no-nonsense personality, making it an easy choice for buyers who want sensible space without the showroom theatrics. It won't set your pulse racing, but its composed ride and user-friendly kit make it a dependable companion for daily errands and weekend escapes — reliable rather than flashy.

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Reviews Mitsubishi ASX

4.9 (2 Reviews)
rate
Jaca
15 Apr 2026, 15:55:53

A super-sporty compact crossover — raised ground clearance, drives light and enjoyable, very pleasant, well-insulated interior. Perfect size of car for me.

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

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VS
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Kia Stonic
SEAT Arona
VS
In the competitive subcompact SUV segment, the Kia Stonic showcases its sporty design and impressive tech features, making it a standout choice for urban drivers. Meanwhile, the SEAT Arona boasts agile handling and a versatile interior, appealing to those seeking a fun driving experience with …
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VS
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Kia Stonic
Mitsubishi ASX

Costs and Consumption
Price
20,100 - 26,600 £
Price
21,400 - 32,500 £
Consumption L/100km
5.6 - 5.9 L/100km
Consumption L/100km
4.4 - 6 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
127 - 133 g/km
co2
99 - 137 g/km
Fuel tank capacity
45 L
Fuel tank capacity
-

Dimensions and Body
Body Type
SUV
Body Type
SUV
Seats
5
Seats
5
Doors
5
Doors
-
Curb weight
1,205 - 1,270 kg
Curb weight
1,296 - 1,493 kg
Trunk capacity
352 L
Trunk capacity
348 - 484 L
Length
4,165 mm
Length
-
Width
1,760 mm
Width
1,797 mm
Height
1,520 mm
Height
-
Max trunk capacity
1,155 L
Max trunk capacity
-
Payload
440 - 445 kg
Payload
397 - 445 kg

Engine and Performance
Engine Type
Petrol, Petrol MHEV
Engine Type
Full Hybrid, Petrol, Petrol MHEV
Transmission
Manuel, Automatic
Transmission
Automatic, Manuel
Transmission Detail
Manual Gearbox, Dual-Clutch Automatic
Transmission Detail
Automatic Gearbox, Manual Gearbox, Dual-Clutch Automatic
Drive Type
Front-Wheel Drive
Drive Type
Front-Wheel Drive
Power HP
100 - 115 HP
Power HP
115 - 158 HP
Acceleration 0-100km/h
10.7 - 12.1 s
Acceleration 0-100km/h
8.9 - 12.3 s
Max Speed
179 - 182 km/h
Max Speed
-
Torque
172 - 200 Nm
Torque
190 - 245 Nm
Number of Cylinders
3
Number of Cylinders
3 - 4
Power kW
74 - 85 kW
Power kW
84 - 116 kW
Engine capacity
998 cm3
Engine capacity
1,199 - 1,789 cm3

General
Model Year
2025
Model Year
2025
CO2 Efficiency Class
D
CO2 Efficiency Class
C, D, E
Brand
Kia
Brand
Mitsubishi
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.