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Audi A3 Sportback vs SEAT Arona - Differences and prices compared

Compare performance (400 HP vs 150 HP), boot space and price (27000 £ vs 20700 £ ) at a glance. Find out which car is the better choice for you – Audi A3 Sportback or SEAT Arona?

Audi A3 Sportback

SEAT Arona

4.9 (1 Reviews)
rate

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

A3 Sportback

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.

SEAT Arona has a noticeable advantage in terms of price – it starts at 20700 £ , while the Audi A3 Sportback costs 27000 £ . That’s a price difference of around 6300 £.

Fuel consumption also shows a difference: Audi A3 Sportback manages with 1.10 L and is therefore clearly more efficient than the SEAT Arona with 5.30 L. The difference is about 4.20 L per 100 km.

Arona

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 has a clearly edge – offering 400 HP compared to 150 HP. That’s roughly 250 HP more horsepower.

In acceleration from 0 to 100 km/h, the Audi A3 Sportback is decisively quicker – completing the sprint in 3.80 s, while the SEAT Arona takes 8.30 s. That’s about 4.50 s faster.

There’s also a difference in torque: Audi A3 Sportback pulls convincingly stronger with 500 Nm compared to 250 Nm. That’s about 250 Nm difference.

A3 Sportback

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.

Both vehicles offer seating for 5 people.

In curb weight, SEAT Arona is somewhat lighter – 1188 kg compared to 1360 kg. The difference is around 172 kg.

In terms of boot space, the SEAT Arona offers minimal more room – 400 L compared to 380 L. That’s a difference of about 20 L.

When it comes to payload, SEAT Arona slight takes the win – 522 kg compared to 480 kg. That’s a difference of about 42 kg.

Who wins the race in the data check?

The Audi A3 Sportback is far 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.

Audi A3 Sportback
SEAT Arona

Costs and Consumption

View detailed analysis

Engine and Performance

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Dimensions and Body

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from about £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
  • Electric Range : 134 - 141 km

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.

details

SEAT Arona

4.9 (1 Reviews)
rate

The SEAT Arona is a cheeky urban crossover that mixes sharp styling with sensible practicality, making it an appealing choice for buyers who want personality without fuss. It’s zippy in traffic, comfortable enough for daily driving, and brings enough character to make routine journeys feel a little more fun.

details
Audi A3 Sportback
SEAT Arona

Costs and Consumption

Price
27000 - 56600 £
Price
20700 - 30500 £
Consumption L/100km
1.1 - 9.3 L
Consumption L/100km
5.3 - 5.8 L
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
134 - 141 km
Electric Range
-
Battery Capacity
19.70 kWh
Battery Capacity
-
co2
25 - 211 g/km
co2
120 - 132 g/km
Fuel tank capacity
40 L
Fuel tank capacity
-

Dimensions and Body

Body Type
Hatchback
Body Type
SUV
Seats
5
Seats
5
Doors
5
Doors
-
Curb weight
1360 - 1685 kg
Curb weight
1188 - 1268 kg
Trunk capacity
280 - 380 L
Trunk capacity
400 L
Length
4352 - 4353 mm
Length
-
Width
1816 - 1851 mm
Width
1780 mm
Height
1441 - 1470 mm
Height
-
Max trunk capacity
1100 L
Max trunk capacity
-
Payload
410 - 480 kg
Payload
502 - 522 kg

Engine and Performance

Engine Type
Petrol, Petrol MHEV, Diesel, Plugin Hybrid
Engine Type
Petrol
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, All-Wheel Drive
Drive Type
Front-Wheel Drive
Power HP
116 - 400 HP
Power HP
95 - 150 HP
Acceleration 0-100km/h
3.8 - 10.1 s
Acceleration 0-100km/h
8.3 - 11.1 s
Max Speed
225 - 237 km/h
Max Speed
-
Torque
220 - 500 Nm
Torque
175 - 250 Nm
Number of Cylinders
4 - 5
Number of Cylinders
3 - 4
Power kW
85 - 294 kW
Power kW
70 - 110 kW
Engine capacity
1498 - 2480 cm3
Engine capacity
999 - 1498 cm3

General

Model Year
2025
Model Year
2025
CO2 Efficiency Class
D, F, E, G, B
CO2 Efficiency Class
D
Brand
Audi
Brand
SEAT
What drive types are available for the Audi A3 Sportback?

The Audi A3 Sportback is offered with Front-Wheel Drive or All-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.