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Mercedes A Class Saloon vs SEAT Arona comparison

Compare performance (320 HP vs 150 HP), boot space and price (32,700 £ vs 20,700 £ ) at a glance. Find out which car is the better choice for you – Mercedes A Class Saloon or SEAT Arona?

Mercedes A Class Saloon vs SEAT Arona: Key differences

Mercedes A Class Saloon

  • significantly more power
  • considerably more efficient
  • considerably quicker 0–100 km/h
details

SEAT Arona

4.8 (6 Reviews)
rate
  • considerably cheaper
  • clearly lighter
  • only slightly more trunk space
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

A Class Saloon

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 is considerably cheaper – starting at 20,700 £ , while the Mercedes A Class Saloon costs 32,700 £ . That’s a price difference of around 12,021 £.

Fuel consumption also shows a difference: the Mercedes A Class Saloon uses 0.7 L/100km and is considerably more efficient than the SEAT Arona with 5.3 L/100km. The difference is about 4.6 L/100km.

Arona

Engine and Performance:

Power, torque and acceleration are the classic benchmarks for car enthusiasts – and here, some clear differences start to show.

When it comes to engine power, the Mercedes A Class Saloon offers significantly more power – delivering 320 HP compared to 150 HP. That’s roughly 170 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes A Class Saloon is considerably quicker – completing the sprint in 4.8 s, while the SEAT Arona takes 8.3 s. That’s about 3.5 s quicker.

There’s also a difference in torque: the Mercedes A Class Saloon delivers significantly more torque with 450 Nm compared to 250 Nm. That’s about 200 Nm more.

A Class Saloon

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 terms of curb weight, SEAT Arona is clearly lighter – 1,188 kg compared to 1,450 kg. The difference is around 262 kg.

Looking at boot space, the SEAT Arona offers only slightly more boot space – 400 L compared to 395 L. That’s a difference of about 5 L.

When it comes to payload, the SEAT Arona carries very slightly more – 522 kg compared to 490 kg. That’s a difference of about 32 kg.

Who wins the race in the data check?

The Mercedes A Class Saloon 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.

from £32,700
A Class Saloon

Mercedes A Class Saloon

  • Engine Type Plugin Hybrid, Petrol MHEV, Diesel
  • Transmission Automatic
  • Drive Type Front-Wheel Drive, All-Wheel Drive
  • Power HP 116 - 320 HP
  • Consumption L/100km 0.7 - 8.1 L/100km
  • Electric Range 88 km
details

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Mercedes A Class Saloon
SEAT Arona

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Mercedes A Class Saloon

The Mercedes A‑Class Saloon blends compact practicality with premium flair, wrapping a surprisingly spacious interior in a slick, modern package that feels more grown-up than its hatchback sibling. It’s an ideal choice for city drivers who want Mercedes polish and cutting-edge tech without the ostentation of a larger saloon, and it even manages to make the daily commute feel a little bit special.

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Reviews Mercedes A Class Saloon

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

SEAT Arona

The SEAT Arona is a compact crossover that blends practical, city-friendly packaging with a sporty, youthful design. It delivers a comfortable ride, an intuitive cabin and economical running costs, making it a sensible pick for daily drives and weekend getaways.

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Reviews SEAT Arona

4.8 (6 Reviews)
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Jorge Soares
29 May 2026, 20:19:35

É um excelente crossover...
Tem uma imagem desportiva e está bem equipado a nível de segurança e de tecnologia...
Tem uma óptima posição de condução...
É muito divertido de conduzir...
Só tenho pena de não trazer de fábrica o pneu sobresselente...

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
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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Mercedes A Class Saloon
SEAT Arona

Costs and Consumption
Price
32,700 - 55,900 £
Price
20,700 - 30,300 £
Consumption L/100km
0.7 - 8.1 L/100km
Consumption L/100km
5.3 - 5.8 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
88 km
Electric Range
-
Battery Capacity
12.9 kWh
Battery Capacity
-
co2
16 - 184 g/km
co2
120 - 132 g/km
Fuel tank capacity
35 - 51 L
Fuel tank capacity
-

Dimensions and Body
Body Type
Sedan
Body Type
SUV
Seats
5
Seats
5
Doors
4
Doors
-
Curb weight
1,450 - 1,705 kg
Curb weight
1,188 - 1,268 kg
Trunk capacity
345 - 395 L
Trunk capacity
400 L
Length
4,558 - 4,570 mm
Length
-
Width
1,796 mm
Width
1,780 mm
Height
1,413 - 1,429 mm
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
475 - 490 kg
Payload
502 - 522 kg

Engine and Performance
Engine Type
Plugin Hybrid, Petrol MHEV, Diesel
Engine Type
Petrol
Transmission
Automatic
Transmission
Manuel, Automatic
Transmission Detail
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 - 320 HP
Power HP
95 - 150 HP
Acceleration 0-100km/h
4.8 - 9.9 s
Acceleration 0-100km/h
8.3 - 11.1 s
Max Speed
206 - 250 km/h
Max Speed
-
Torque
200 - 450 Nm
Torque
175 - 250 Nm
Number of Cylinders
4
Number of Cylinders
3 - 4
Power kW
85 - 235 kW
Power kW
70 - 110 kW
Engine capacity
1,332 - 1,991 cm3
Engine capacity
999 - 1,498 cm3

General
Model Year
2,024 - 2,025
Model Year
2025
CO2 Efficiency Class
B, D, G, E
CO2 Efficiency Class
D
Brand
Mercedes-Benz
Brand
SEAT
What drivetrain options does the Mercedes A Class Saloon have?

The Mercedes A Class Saloon is available as Front-Wheel Drive or All-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.