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Mercedes A Class vs SEAT Arona - Differences and prices compared

Compare performance (320 HP vs 150 HP), boot space and price (32600 £ vs 20700 £ ) at a glance. Find out which car is the better choice for you – Mercedes A Class or SEAT Arona?

Mercedes A Class

SEAT Arona

4.9 (1 Reviews)
rate

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

A Class

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 has a clearly advantage in terms of price – it starts at 20700 £ , while the Mercedes A Class costs 32600 £ . That’s a price difference of around 11868 £.

Fuel consumption also shows a difference: Mercedes A Class manages with 2.30 L and is therefore clearly more efficient than the SEAT Arona with 5.30 L. The difference is about 3 L per 100 km.

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 has a significantly edge – offering 320 HP compared to 150 HP. That’s roughly 170 HP more horsepower.

In acceleration from 0 to 100 km/h, the Mercedes A Class is decisively quicker – completing the sprint in 4.70 s, while the SEAT Arona takes 8.30 s. That’s about 3.60 s faster.

There’s also a difference in torque: Mercedes A Class pulls convincingly stronger with 450 Nm compared to 250 Nm. That’s about 200 Nm difference.

A Class

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 curb weight, SEAT Arona is clearly perceptible lighter – 1188 kg compared to 1440 kg. The difference is around 252 kg.

In terms of boot space, the SEAT Arona offers somewhat more room – 400 L compared to 350 L. That’s a difference of about 50 L.

When it comes to payload, SEAT Arona minimal takes the win – 522 kg compared to 485 kg. That’s a difference of about 37 kg.

Who wins the race in the data check?

The Mercedes A Class 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.

Mercedes A Class
SEAT Arona

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis
from about £32,600
A Class

Mercedes A Class

  • 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 : 2.3 - 8.3 L
  • Electric Range : 85 km
details

Mercedes A Class

The Mercedes A‑Class arrives as a compact charmer that dresses premium materials and a cockpit full of screens in a tidy, city-friendly package, delivering surprising agility and poise. For buyers who want a luxury badge, clever tech and a car that's equally happy in tight streets or on a spirited country run, the A‑Class offers a grown-up feel with a cheeky streak.

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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.

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Reviews Mercedes A Class

Reviews SEAT Arona

4.9 (1 Reviews)
rate

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Mercedes A Class
SEAT Arona

Costs and Consumption
Price
32600 - 56300 £
Price
20700 - 30500 £
Consumption L/100km
2.3 - 8.3 L
Consumption L/100km
5.3 - 5.8 L
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
85 km
Electric Range
-
Battery Capacity
12.90 kWh
Battery Capacity
-
co2
53 - 188 g/km
co2
120 - 132 g/km
Fuel tank capacity
35 L
Fuel tank capacity
-

Dimensions and Body
Body Type
Hatchback
Body Type
SUV
Seats
5
Seats
5
Doors
5
Doors
-
Curb weight
1440 - 1695 kg
Curb weight
1188 - 1268 kg
Trunk capacity
310 - 350 L
Trunk capacity
400 L
Length
4428 mm
Length
-
Width
1796 mm
Width
1780 mm
Height
1423 mm
Height
-
Max trunk capacity
1125 L
Max trunk capacity
-
Payload
475 - 485 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
4.7 - 9.7 s
Acceleration 0-100km/h
8.3 - 11.1 s
Max Speed
225 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
1332 - 1991 cm3
Engine capacity
999 - 1498 cm3

General
Model Year
2024 - 2025
Model Year
2025
CO2 Efficiency Class
B, D, E, G
CO2 Efficiency Class
D
Brand
Mercedes-Benz
Brand
SEAT

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Is the Mercedes A Class offered with different drivetrains?

Available configurations include 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.