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Kia Stonic vs Audi A3 Sportback comparison

Compare performance (115 HP vs 400 HP), boot space and price (20,100 £ vs 27,000 £ ) at a glance. Find out which car is the better choice for you – Kia Stonic or Audi A3 Sportback?

Kia Stonic vs Audi A3 Sportback: Key differences

Kia Stonic

4.6 (2 Reviews)
rate
  • clearly cheaper
  • a bit lighter

Audi A3 Sportback

3.9 (1 Reviews)
rate
  • clearly more power
  • considerably more efficient
  • substantially quicker 0–100 km/h
  • only slightly 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:

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 clearly cheaper – starting at 20,100 £ , while the Audi A3 Sportback costs 27,000 £ . That’s a price difference of around 6,866 £.

Fuel consumption also shows a difference: the Audi A3 Sportback uses 1.1 L/100km and is considerably more efficient than the Kia Stonic with 5.6 L/100km. The difference is about 4.5 L/100km.

A3 Sportback

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 Audi A3 Sportback offers clearly more power – delivering 400 HP compared to 115 HP. That’s roughly 285 HP more horsepower.

When accelerating from 0 to 100 km/h, the Audi A3 Sportback is substantially quicker – completing the sprint in 3.8 s, while the Kia Stonic takes 10.7 s. That’s about 6.9 s quicker.

Looking at top speed, the Audi A3 Sportback is clearly faster – reaching 237 km/h, while the Kia Stonic tops out at 182 km/h. The difference is around 55 km/h.

There’s also a difference in torque: the Audi A3 Sportback delivers clearly more torque with 500 Nm compared to 200 Nm. That’s about 300 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 a bit lighter – 1,205 kg compared to 1,360 kg. The difference is around 155 kg.

Looking at boot space, the Audi A3 Sportback offers only slightly more boot space – 380 L compared to 352 L. That’s a difference of about 28 L.

For maximum load capacity, the Kia Stonic offers barely more capacity – up to 1,155 L, about 55 L more than the Audi A3 Sportback.

When it comes to payload, the Audi A3 Sportback carries only slightly more – 480 kg compared to 445 kg. That’s a difference of about 35 kg.

Who wins the race in the data check?

The Audi A3 Sportback is clearly superior 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 £27,000
A3 Sportback

Audi A3 Sportback

  • Engine Type : Petrol, Petrol MHEV, Diesel, Plugin Hybrid
  • Transmission : Manuel, Automatic
  • Drive Type : Front-Wheel Drive, All-Wheel Drive
  • Power HP : 116 - 400 HP
  • Consumption L/100km : 1.1 - 9.3 L/100km
  • Electric Range : 134 - 141 km
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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 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

Audi A3 Sportback

The Audi A3 Sportback wraps premium materials and crisp German design into a practical hatchback package that makes daily driving feel smart rather than showy. It’s nimble in the city, composed on longer trips, and carries just enough swagger to satisfy buyers who want quality without shouting about it.

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Reviews Audi A3 Sportback

3.9 (1 Reviews)
rate

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

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Audi A3 Sportback

Costs and Consumption
Price
20,100 - 26,600 £
Price
27,000 - 56,600 £
Consumption L/100km
5.6 - 5.9 L/100km
Consumption L/100km
1.1 - 9.3 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
134 - 141 km
Battery Capacity
-
Battery Capacity
19.7 kWh
co2
127 - 133 g/km
co2
25 - 211 g/km
Fuel tank capacity
45 L
Fuel tank capacity
40 L

Dimensions and Body
Body Type
SUV
Body Type
Hatchback
Seats
5
Seats
5
Doors
5
Doors
5
Curb weight
1,205 - 1,270 kg
Curb weight
1,360 - 1,685 kg
Trunk capacity
352 L
Trunk capacity
280 - 380 L
Length
4,165 mm
Length
4,352 - 4,353 mm
Width
1,760 mm
Width
1,816 - 1,851 mm
Height
1,520 mm
Height
1,441 - 1,470 mm
Max trunk capacity
1,155 L
Max trunk capacity
1,100 L
Payload
440 - 445 kg
Payload
410 - 480 kg

Engine and Performance
Engine Type
Petrol, Petrol MHEV
Engine Type
Petrol, Petrol MHEV, Diesel, Plugin Hybrid
Transmission
Manuel, Automatic
Transmission
Manuel, Automatic
Transmission Detail
Manual Gearbox, Dual-Clutch Automatic
Transmission Detail
Manual Gearbox, Dual-Clutch Automatic
Drive Type
Front-Wheel Drive
Drive Type
Front-Wheel Drive, All-Wheel Drive
Power HP
100 - 115 HP
Power HP
116 - 400 HP
Acceleration 0-100km/h
10.7 - 12.1 s
Acceleration 0-100km/h
3.8 - 10.1 s
Max Speed
179 - 182 km/h
Max Speed
225 - 237 km/h
Torque
172 - 200 Nm
Torque
220 - 500 Nm
Number of Cylinders
3
Number of Cylinders
4 - 5
Power kW
74 - 85 kW
Power kW
85 - 294 kW
Engine capacity
998 cm3
Engine capacity
1,498 - 2,480 cm3

General
Model Year
2,025
Model Year
2,025
CO2 Efficiency Class
D
CO2 Efficiency Class
D, F, E, G, B
Brand
Kia
Brand
Audi
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.