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Mazda 3 Sedan vs SEAT Arona comparison

Compare performance (186 HP vs 150 HP), boot space and price (25,000 £ vs 20,700 £ ) at a glance. Find out which car is the better choice for you – Mazda 3 Sedan or SEAT Arona?

Mazda 3 Sedan vs SEAT Arona: Key differences

Mazda 3 Sedan

4.7 (1 Reviews)
rate
  • moderately more power
  • very slightly quicker 0–100 km/h
  • slightly more trunk space
details

SEAT Arona

4.9 (3 Reviews)
rate
  • visibly cheaper
  • barely more efficient
  • moderately lighter
details

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

3 Sedan

Costs and Efficiency:

Price and efficiency are often the first things buyers look at. Here it becomes clear which model has the long-term edge – whether at the pump, the plug, or in purchase price.

SEAT Arona is visibly cheaper – starting at 20,700 £ , while the Mazda 3 Sedan costs 25,000 £ . That’s a price difference of around 4,277 £.

Fuel consumption also shows a difference: the SEAT Arona uses 5.3 L/100km and is barely more efficient than the Mazda 3 Sedan with 5.5 L/100km. The difference is about 0.2 L/100km.

Arona

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 Mazda 3 Sedan offers moderately more power – delivering 186 HP compared to 150 HP. That’s roughly 36 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mazda 3 Sedan is very slightly quicker – completing the sprint in 8.1 s, while the SEAT Arona takes 8.3 s. That’s about 0.2 s quicker.

There’s also a difference in torque: the SEAT Arona delivers marginally more torque with 250 Nm compared to 240 Nm. That’s about 10 Nm more.

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 terms of curb weight, SEAT Arona is moderately lighter – 1,188 kg compared to 1,420 kg. The difference is around 232 kg.

Looking at boot space, the Mazda 3 Sedan offers slightly more boot space – 450 L compared to 400 L. That’s a difference of about 50 L.

When it comes to payload, the SEAT Arona carries marginally more – 522 kg compared to 481 kg. That’s a difference of about 41 kg.

Who wins the race in the data check?

The Mazda 3 Sedan holds a narrow 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 £25,000
3 Sedan

Mazda 3 Sedan

  • Engine Type : Petrol MHEV
  • Transmission : Manuel, Automatic
  • Drive Type : Front-Wheel Drive
  • Power HP : 140 - 186 HP
  • Consumption L/100km : 5.5 - 6.1 L/100km
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Mazda 3 Sedan
SEAT Arona

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Mazda 3 Sedan

The Mazda 3 Sedan dresses like a compact premium car, with sculpted lines and an interior that punches well above its class. It rewards drivers with eager handling and a composed, comfortable ride that turns routine runs into something a bit more enjoyable — proof that style and substance can share the same key.

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Reviews Mazda 3 Sedan

4.7 (1 Reviews)
rate

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

SEAT Arona

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.

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Reviews SEAT Arona

4.9 (3 Reviews)
rate
Jorge Soares
26 Mar 2026, 01:31:22

Comprei há 2 meses o Seat Arona novo DE 95 cv... ´Trata-se da versão base...
Estou muito contente com o mesmo...
Tem um ótima posição elevada da condução, é económico, tem uma bagageira com uma boa capacidade de arrumação...
Considero que este B Suv tem uma aparência bem desportiva e atraente...
Só tenho pena deste carro não ter instalados de fábrica os faróis dianteiros de nevoeiro, nem a câmara de ré acho que isto faz muita falta a nível da segurança da condução... Só a versão superior do carro é que traz instalada isto tudo...

How do you mainly use this car? (optional): City / Short distance
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money

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Mazda 3 Sedan
SEAT Arona

Costs and Consumption
Price
25,000 - 34,200 £
Price
20,700 - 30,500 £
Consumption L/100km
5.5 - 6.1 L/100km
Consumption L/100km
5.3 - 5.8 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
123 - 135 g/km
co2
120 - 132 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Sedan
Body Type
SUV
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
1,420 - 1,492 kg
Curb weight
1,188 - 1,268 kg
Trunk capacity
450 L
Trunk capacity
400 L
Length
-
Length
-
Width
1,795 mm
Width
1,780 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
467 - 481 kg
Payload
502 - 522 kg

Engine and Performance
Engine Type
Petrol MHEV
Engine Type
Petrol
Transmission
Manuel, Automatic
Transmission
Manuel, Automatic
Transmission Detail
Manual Gearbox, Automatic Gearbox
Transmission Detail
Manual Gearbox, Dual-Clutch Automatic
Drive Type
Front-Wheel Drive
Drive Type
Front-Wheel Drive
Power HP
140 - 186 HP
Power HP
95 - 150 HP
Acceleration 0-100km/h
8.1 - 9.8 s
Acceleration 0-100km/h
8.3 - 11.1 s
Max Speed
-
Max Speed
-
Torque
238 - 240 Nm
Torque
175 - 250 Nm
Number of Cylinders
4
Number of Cylinders
3 - 4
Power kW
103 - 137 kW
Power kW
70 - 110 kW
Engine capacity
1,998 - 2,488 cm3
Engine capacity
999 - 1,498 cm3

General
Model Year
2025
Model Year
2025
CO2 Efficiency Class
D
CO2 Efficiency Class
D
Brand
Mazda
Brand
SEAT
What drivetrain options does the Mazda 3 Sedan have?

The Mazda 3 Sedan 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.