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MG MG3 vs SEAT Arona comparison

Compare performance (194 HP vs 150 HP), boot space and price (15400 £ vs 20700 £ ) at a glance. Find out which car is the better choice for you – MG MG3 or SEAT Arona?

MG3

Head to Head: MG3 vs. SEAT Arona

When it comes to compact cars that blend practicality and modern innovation, the MG3 hatchback and the SEAT Arona compact SUV both hold their own in the bustling automotive market. Whether you're looking for efficiency in city driving or a robust companion for longer journeys, these two vehicles offer a mix of style and substance. Here's how the MG3 stacks up against the SEAT Arona based on their technical details and innovations.

Arona

Design and Dimensions

Starting with the MG3, this hatchback flaunts its slick design with dimensions of 4113mm in length, 1797mm in width, and 1502mm in height. Its compact body style is ideal for urban environments, making it easy to navigate through tight city streets.

In comparison, the SEAT Arona's SUV stature is slightly longer and taller at 4153mm in length, 1780mm in width, and 1537mm in height. This gives the Arona a more commanding presence on the road and offers a slightly raised driving position typical of an SUV.

MG3

Performance and Efficiency

The MG3 offers versatility with its engine options, including both full hybrid and petrol, supported by automatic and manual gearboxes. The MG3's engine delivers a commendable 194 HP or 116 HP and has an impressive acceleration from 0 to 100 km/h in just 8 seconds, with a maximum speed of 170 km/h.

On the efficiency front, the MG3 offers a consumption of 4.4 L/100km for its hybrid option, while the petrol variant consumes 6.1 L/100km. With a curb weight of 1285 kg, the MG3's fuel tank capacity stands at 36 liters, paired with a trunk capacity of 293 liters.

The SEAT Arona also comes with versatile engine options, offering a range from 95 HP to 150 HP. The Arona meets the needs for both manual and automatic preferences, boasting a dual-clutch automatic transmission. It offers a slightly more varied range of acceleration, from 8.4 to 11.3 seconds from 0 to 100 km/h, with a top speed of 210 km/h depending on the variant.

The Arona is also commendable in fuel consumption, delivering around 5.4 to 5.6 L/100km. With a slightly larger fuel tank capacity of 40 liters, it supports longer trips without frequent refueling stops. The SEAT Arona provides a larger trunk space of 400 liters, adding to its practicality for families or road-trippers.

Arona

Interior and Comfort

Both cars accommodate five passengers comfortably, ensuring a pleasant ride with modern features customized to enhance user experience. The interior materials and infotainment systems in both vehicles exhibit quality and user-centric design, fulfilling diverse needs from connectivity to entertainment.

MG3

Environmental Considerations

The MG3 and SEAT Arona are conscious of environmental impacts with their respective CO2 emissions ratings. The MG3 stands between 100 to 137 g/km, while the Arona emits between 122 to 128 g/km. With varying CO2 efficiency classes for both models, prospective buyers can choose based on environmental priority.

Arona

The Verdict

The choice between the MG3 and SEAT Arona ultimately comes down to personal preference and specific needs. The MG3 impresses with its dynamic performance and compact versatility, ideal for city dwellers. On the other hand, the SEAT Arona offers a spacious interior and robust feature set, making it a great option for those who need a bit more room and SUV capabilities.

Whether you're inclined towards the hatchback charm of the MG3 or the sturdiness of the SEAT Arona SUV, both vehicles stand out in their categories, ensuring you drive away with a perfect blend of modern technology, comfort, and efficient performance.

MG MG3 vs SEAT Arona: Key differences

MG MG3

5 (1 Reviews)
rate
  • evident cheaper
  • clearly perceptible more power
  • distinct more efficient
  • slight quicker from 0–100 km/h

SEAT Arona

4.9 (1 Reviews)
rate
  • minimal lighter

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

MG3

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.

MG MG3 has a evident advantage in terms of price – it starts at 15400 £ , while the SEAT Arona costs 20700 £ . That’s a price difference of around 5280 £.

Fuel consumption also shows a difference: MG MG3 manages with 4.40 L and is therefore distinct more efficient than the SEAT Arona with 5.30 L. The difference is about 0.90 L per 100 km.

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 MG MG3 has a clearly perceptible edge – offering 194 HP compared to 150 HP. That’s roughly 44 HP more horsepower.

In acceleration from 0 to 100 km/h, the MG MG3 is slight quicker – completing the sprint in 8 s, while the SEAT Arona takes 8.30 s. That’s about 0.30 s faster.

There’s also a difference in torque: SEAT Arona pulls convincingly stronger with 250 Nm compared to 148 Nm. That’s about 102 Nm difference.

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 minimal lighter – 1188 kg compared to 1237 kg. The difference is around 49 kg.

When it comes to payload, SEAT Arona to a small extent takes the win – 522 kg compared to 448 kg. That’s a difference of about 74 kg.

Who wins the race in the data check?

The MG MG3 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

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MG MG3
SEAT Arona

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis
from about £15,400
MG3

MG MG3

  • Engine Type : Petrol, Full Hybrid
  • Transmission : Manuel, Automatic
  • Drive Type : Front-Wheel Drive
  • Power HP : 116 - 194 HP
  • Consumption L/100km : 4.4 - 6.1 L
details

MG MG3

5 (1 Reviews)
rate

The MG3 is a cheeky city hatch that pairs bold, youthful styling with sprightly handling for drivers who want personality on a budget. Its cabin is bright and cleverly packaged, offering sensible space and a fun-to-drive character that turns mundane commutes into something a bit more enjoyable.

details
KV-1-1
Left-Back-30°-1
Front-Row-Space-1
Trunk-3

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
seat-arona-One-car-countless-possibilities_07_HQ
seat-arona-One-car-countless-possibilities_06_HQ
seat-arona-One-car-countless-possibilities_04_HQ
seat-arona-One-car-countless-possibilities_02_HQ

Reviews MG MG3

5 (1 Reviews)
rate
Giorgio catacchio
20 Sept 2025, 00:08:28

I've owned the MG3 Hybrid for a year — I travel a lot, never a dull moment; comes fully loaded as standard, incredible acceleration, etc.

Reviews SEAT Arona

4.9 (1 Reviews)
rate
MG MG3
SEAT Arona

Costs and Consumption
Price
15400 - 21400 £
Price
20700 - 30500 £
Consumption L/100km
4.4 - 6.1 L
Consumption L/100km
5.3 - 5.8 L
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
100 - 137 g/km
co2
120 - 132 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Hatchback
Body Type
SUV
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
1237 - 1285 kg
Curb weight
1188 - 1268 kg
Trunk capacity
-
Trunk capacity
400 L
Length
-
Length
-
Width
1797 mm
Width
1780 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
373 - 448 kg
Payload
502 - 522 kg

Engine and Performance
Engine Type
Petrol, Full Hybrid
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
116 - 194 HP
Power HP
95 - 150 HP
Acceleration 0-100km/h
8 - 10.8 s
Acceleration 0-100km/h
8.3 - 11.1 s
Max Speed
-
Max Speed
-
Torque
148 Nm
Torque
175 - 250 Nm
Number of Cylinders
4
Number of Cylinders
3 - 4
Power kW
85 - 143 kW
Power kW
70 - 110 kW
Engine capacity
1490 - 1495 cm3
Engine capacity
999 - 1498 cm3

General
Model Year
2025
Model Year
2025
CO2 Efficiency Class
E, C
CO2 Efficiency Class
D
Brand
MG
Brand
SEAT

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What drivetrain options does the MG MG3 have?

The MG MG3 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.