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Kia Stonic vs Mitsubishi ASX comparison

Compare performance (115 HP vs 158 HP), boot space and price (20100 £ vs 21400 £ ) at a glance. Find out which car is the better choice for you – Kia Stonic or Mitsubishi ASX?

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.

Kia Stonic vs Mitsubishi ASX: Key differences

Kia Stonic

4.3 (1 Reviews)
rate
  • hardly perceptible cheaper
  • barely noticeable lighter

Mitsubishi ASX

5 (1 Reviews)
rate
  • distinct more power
  • noticeable more efficient
  • evident quicker from 0–100 km/h
  • noticeable more trunk space

All details on performance, efficiency, range and trunk space can be found in the technical comparison below – including user reviews for both models.

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 has a hardly perceptible advantage in terms of price – it starts at 20100 £ , while the Mitsubishi ASX costs 21400 £ . That’s a price difference of around 1286 £.

Fuel consumption also shows a difference: Mitsubishi ASX manages with 4.40 L and is therefore noticeable more efficient than the Kia Stonic with 5.60 L. The difference is about 1.20 L per 100 km.

ASX

Engine and Performance:

Under the bonnet, it becomes clear which model is tuned for sportiness and which one takes the lead when you hit the accelerator.

When it comes to engine power, the Mitsubishi ASX has a distinct edge – offering 158 HP compared to 115 HP. That’s roughly 43 HP more horsepower.

In acceleration from 0 to 100 km/h, the Mitsubishi ASX is evident quicker – completing the sprint in 8.90 s, while the Kia Stonic takes 10.70 s. That’s about 1.80 s faster.

There’s also a difference in torque: Mitsubishi ASX pulls slightly stronger with 245 Nm compared to 200 Nm. That’s about 45 Nm difference.

Stonic

Space and Everyday Use:

Whether family car or daily driver – which one offers more room, flexibility and comfort?

Both vehicles offer seating for 5 people.

In curb weight, Kia Stonic is barely noticeable lighter – 1205 kg compared to 1296 kg. The difference is around 91 kg.

In terms of boot space, the Mitsubishi ASX offers noticeable more room – 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 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.

Frequently compared as well

Kia Stonic
Kia XCeed
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Kia Stonic
Mitsubishi ASX

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis
from about £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
details

Kia Stonic

4.3 (1 Reviews)
rate

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.

details
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Kia_Stonic_MY22_08
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Mitsubishi ASX

5 (1 Reviews)
rate

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.

details
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Reviews Kia Stonic

4.3 (1 Reviews)
rate
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

Reviews Mitsubishi ASX

5 (1 Reviews)
rate
Kia Stonic
Mitsubishi ASX

Costs and Consumption
Price
20100 - 26600 £
Price
21400 - 32500 £
Consumption L/100km
5.6 - 5.9 L
Consumption L/100km
4.4 - 6 L
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
1205 - 1270 kg
Curb weight
1296 - 1493 kg
Trunk capacity
352 L
Trunk capacity
348 - 484 L
Length
4165 mm
Length
-
Width
1760 mm
Width
1797 mm
Height
1520 mm
Height
-
Max trunk capacity
1155 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
1199 - 1789 cm3

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

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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.