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Ford Mustang Convertible vs Kia Stonic comparison

Compare performance (446 HP vs 115 HP), boot space and price (56,900 £ vs 20,400 £ ) at a glance. Find out which car is the better choice for you – Ford Mustang Convertible or Kia Stonic?

Ford Mustang Convertible vs Kia Stonic: Key differences

Ford Mustang Convertible

  • clearly more power
  • substantially quicker 0–100 km/h
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Kia Stonic

4.6 (2 Reviews)
rate
  • considerably cheaper
  • considerably more efficient
  • considerably lighter
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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

Mustang Convertible

Costs and Efficiency:

Looking at overall running costs, both models reveal some interesting differences in everyday economy.

Kia Stonic is considerably cheaper – starting at 20,400 £ , while the Ford Mustang Convertible costs 56,900 £ . That’s a price difference of around 36,523 £.

Fuel consumption also shows a difference: the Kia Stonic uses 5.6 L/100km and is considerably more efficient than the Ford Mustang Convertible with 12.3 L/100km. The difference is about 6.7 L/100km.

Stonic

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 Ford Mustang Convertible offers clearly more power – delivering 446 HP compared to 115 HP. That’s roughly 331 HP more horsepower.

When accelerating from 0 to 100 km/h, the Ford Mustang Convertible is substantially quicker – completing the sprint in 5 s, while the Kia Stonic takes 10.7 s. That’s about 5.7 s quicker.

There’s also a difference in torque: the Ford Mustang Convertible delivers clearly more torque with 540 Nm compared to 200 Nm. That’s about 340 Nm more.

Mustang Convertible

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: Kia Stonic offers more seats – 5 vs 4.

In terms of curb weight, Kia Stonic is considerably lighter – 1,205 kg compared to 1,876 kg. The difference is around 671 kg.

When it comes to payload, the Kia Stonic carries visibly more – 445 kg compared to 324 kg. That’s a difference of about 121 kg.

Who wins the race in the data check?

The Kia Stonic is clearly 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 £20,400
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 - 5.7 L/100km
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Ford Mustang Convertible
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Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Ford Mustang Convertible

The Ford Mustang Convertible makes every drive feel like a small celebration, its exhaust note and open-air drama turning mundane routes into showstoppers. It’s a car that doubles as a weekend mood lifter and a credible everyday companion, blending swagger with surprising practicality.

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Reviews Ford Mustang Convertible

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

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

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Ford Mustang Convertible
Kia Stonic

Costs and Consumption
Price
56,900 - 59,900 £
Price
20,400 - 26,800 £
Consumption L/100km
12.3 - 12.4 L/100km
Consumption L/100km
5.6 - 5.7 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
280 - 282 g/km
co2
126 - 128 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Convertible
Body Type
SUV
Seats
4
Seats
5
Doors
-
Doors
-
Curb weight
1,876 kg
Curb weight
1,205 - 1,270 kg
Trunk capacity
-
Trunk capacity
352 L
Length
-
Length
-
Width
1,916 mm
Width
1,760 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
319 - 324 kg
Payload
440 - 445 kg

Engine and Performance
Engine Type
Petrol
Engine Type
Petrol, Petrol MHEV
Transmission
Manuel, Automatic
Transmission
Manuel, Automatic
Transmission Detail
Manual Gearbox, Automatic Gearbox
Transmission Detail
Manual Gearbox, Dual-Clutch Automatic
Drive Type
Rear-Wheel Drive
Drive Type
Front-Wheel Drive
Power HP
446 HP
Power HP
100 - 115 HP
Acceleration 0-100km/h
5 - 5.4 s
Acceleration 0-100km/h
10.7 - 12.1 s
Max Speed
-
Max Speed
-
Torque
540 Nm
Torque
172 - 200 Nm
Number of Cylinders
8
Number of Cylinders
3
Power kW
328 kW
Power kW
74 - 85 kW
Engine capacity
5,038 cm3
Engine capacity
998 cm3

General
Model Year
2025
Model Year
2025
CO2 Efficiency Class
G
CO2 Efficiency Class
D
Brand
Ford
Brand
Kia
Is the Ford Mustang Convertible offered with different drivetrains?

The Ford Mustang Convertible is available as Rear-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.