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Mercedes SL Class vs SEAT Arona comparison

Compare performance (816 HP vs 150 HP), boot space and price (112,700 £ vs 20,700 £ ) at a glance. Find out which car is the better choice for you – Mercedes SL Class or SEAT Arona?

Mercedes SL Class vs SEAT Arona: Key differences

Mercedes SL Class

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

SEAT Arona

4.8 (6 Reviews)
rate
  • considerably cheaper
  • considerably more efficient
  • clearly lighter
  • noticeably 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

SL Class

Costs and Efficiency:

Looking at overall running costs, both models reveal some interesting differences in everyday economy.

SEAT Arona is considerably cheaper – starting at 20,700 £ , while the Mercedes SL Class costs 112,700 £ . That’s a price difference of around 92,004 £.

Fuel consumption also shows a difference: the SEAT Arona uses 5.3 L/100km and is considerably more efficient than the Mercedes SL Class with 9 L/100km. The difference is about 3.7 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 Mercedes SL Class offers significantly more power – delivering 816 HP compared to 150 HP. That’s roughly 666 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes SL Class is clearly quicker – completing the sprint in 2.9 s, while the SEAT Arona takes 8.3 s. That’s about 5.4 s quicker.

There’s also a difference in torque: the Mercedes SL Class delivers considerably more torque with 1,420 Nm compared to 250 Nm. That’s about 1,170 Nm more.

SL Class

Space and Everyday Use:

Cabin size, boot volume and payload all play a role in everyday practicality. Here, comfort and flexibility make the difference.

Seats: SEAT Arona offers more seats – 5 vs 4.

In terms of curb weight, SEAT Arona is clearly lighter – 1,188 kg compared to 1,810 kg. The difference is around 622 kg.

Looking at boot space, the SEAT Arona offers noticeably more boot space – 400 L compared to 240 L. That’s a difference of about 160 L.

When it comes to payload, the SEAT Arona carries markedly more – 522 kg compared to 375 kg. That’s a difference of about 147 kg.

Who wins the race in the data check?

The SEAT Arona is clearly superior 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.

from £20,700
Arona

SEAT Arona

  • Engine Type Petrol
  • Transmission Manuel, Automatic
  • Drive Type Front-Wheel Drive
  • Power HP 95 - 150 HP
  • Consumption L/100km 5.3 - 5.8 L/100km
details

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Mercedes SL Class
SEAT Arona

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Mercedes SL Class

The Mercedes SL blends timeless elegance with a cheeky sense of occasion, its retractable roof turning any commute into a small celebratory parade. Behind the wheel it behaves like a grown-up sports car that prefers comfort and presence over headline-grabbing bravado, making it a tempting choice for buyers who want to arrive in style.

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Reviews Mercedes SL Class

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)
rate
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 SL Class
SEAT Arona

Costs and Consumption
Price
112,700 - 219,300 £
Price
20,700 - 30,300 £
Consumption L/100km
9 - 13.6 L/100km
Consumption L/100km
5.3 - 5.8 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
12 km
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
206 - 309 g/km
co2
120 - 132 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Roadster
Body Type
SUV
Seats
4
Seats
5
Doors
-
Doors
-
Curb weight
1,810 - 2,195 kg
Curb weight
1,188 - 1,268 kg
Trunk capacity
110 - 240 L
Trunk capacity
400 L
Length
-
Length
-
Width
1,915 mm
Width
1,780 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
145 - 375 kg
Payload
502 - 522 kg

Engine and Performance
Engine Type
Petrol MHEV, Petrol, Plugin Hybrid
Engine Type
Petrol
Transmission
Automatic
Transmission
Manuel, Automatic
Transmission Detail
Automatic Gearbox
Transmission Detail
Manual Gearbox, Dual-Clutch Automatic
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Drive Type
Front-Wheel Drive
Power HP
435 - 816 HP
Power HP
95 - 150 HP
Acceleration 0-100km/h
2.9 - 4.7 s
Acceleration 0-100km/h
8.3 - 11.1 s
Max Speed
-
Max Speed
-
Torque
500 - 1,420 Nm
Torque
175 - 250 Nm
Number of Cylinders
4 - 8
Number of Cylinders
3 - 4
Power kW
320 - 600 kW
Power kW
70 - 110 kW
Engine capacity
1,991 - 3,982 cm3
Engine capacity
999 - 1,498 cm3

General
Model Year
2025
Model Year
2025
CO2 Efficiency Class
G
CO2 Efficiency Class
D
Brand
Mercedes-Benz
Brand
SEAT
What drive types are available for the Mercedes SL Class?

The Mercedes SL Class is offered with Rear-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.