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Fiat 500 Convertible vs Mercedes SL Class comparison

Compare performance (118 HP vs 816 HP), boot space and price (19,700 £ vs 112,700 £ ) at a glance. Find out which car is the better choice for you – Fiat 500 Convertible or Mercedes SL Class?

Fiat 500 Convertible vs Mercedes SL Class: Key differences

Fiat 500 Convertible

  • considerably cheaper
  • substantially more efficient
  • significantly more electric range
  • substantially lighter
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Mercedes SL Class

  • significantly more power
  • substantially quicker 0–100 km/h
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By Achim Sedelmaier

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

500 Convertible

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.

Fiat 500 Convertible is considerably cheaper – starting at 19,700 £ , while the Mercedes SL Class costs 112,700 £ . That’s a price difference of around 92,999 £.

Fuel consumption also shows a difference: the Fiat 500 Convertible uses 5.2 L/100km and is substantially more efficient than the Mercedes SL Class with 9 L/100km. The difference is about 3.8 L/100km.

As for electric range, the Fiat 500 Convertible offers significantly more range – reaching up to 313 km, about 301 km more than the Mercedes SL Class.

SL Class

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 118 HP. That’s roughly 698 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes SL Class is substantially quicker – completing the sprint in 2.9 s, while the Fiat 500 Convertible takes 9 s. That’s about 6.1 s quicker.

There’s also a difference in torque: the Mercedes SL Class delivers considerably more torque with 1,420 Nm compared to 220 Nm. That’s about 1,200 Nm more.

Space and Everyday Use:

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

Both vehicles offer seating for 4 people.

In terms of curb weight, Fiat 500 Convertible is substantially lighter – 1,150 kg compared to 1,810 kg. The difference is around 660 kg.

When it comes to payload, the Mercedes SL Class carries slightly more – 375 kg compared to 325 kg. That’s a difference of about 50 kg.

Who wins the race in the data check?

The Fiat 500 Convertible is far ahead 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 £19,700
500 Convertible

Fiat 500 Convertible

  • Engine Type : Electric, Petrol MHEV
  • Transmission : Automatic, Manuel
  • Drive Type : Front-Wheel Drive
  • Power HP : 65 - 118 HP
  • Consumption L/100km : 5.2 - 5.3 L/100km
  • Consumption kWh/100km : 13 - 14.9 kWh/100km
  • Electric Range : 190 - 313 km
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Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

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View detailed analysis

Fiat 500 Convertible

The Fiat 500 Convertible is a cheeky, retro-styled roof-down city car that turns heads and makes short trips feel like mini vacations. It’s more about charm and personality than practicality, ideal for style-conscious buyers who prefer fun and flair over brute practicality.

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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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15C1119_029
15C1119_120
15C1119_004

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Fiat 500 Convertible
Mercedes SL Class

Costs and Consumption
Price
19,700 - 28,300 £
Price
112,700 - 219,300 £
Consumption L/100km
5.2 - 5.3 L/100km
Consumption L/100km
9 - 13.6 L/100km
Consumption kWh/100km
13 - 14.9 kWh/100km
Consumption kWh/100km
-
Electric Range
190 - 313 km
Electric Range
12 km
Battery Capacity
-
Battery Capacity
-
co2
0 - 123 g/km
co2
206 - 309 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Convertible
Body Type
Roadster
Seats
4
Seats
4
Doors
-
Doors
-
Curb weight
1,150 - 1,480 kg
Curb weight
1,810 - 2,195 kg
Trunk capacity
183 L
Trunk capacity
-
Length
-
Length
-
Width
1,683 - 1,684 mm
Width
1,915 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
250 - 325 kg
Payload
145 - 375 kg

Engine and Performance
Engine Type
Electric, Petrol MHEV
Engine Type
Petrol MHEV, Petrol, Plugin Hybrid
Transmission
Automatic, Manuel
Transmission
Automatic
Transmission Detail
Reduction Gearbox, Manual Gearbox
Transmission Detail
Automatic Gearbox
Drive Type
Front-Wheel Drive
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Power HP
65 - 118 HP
Power HP
381 - 816 HP
Acceleration 0-100km/h
9 - 17.3 s
Acceleration 0-100km/h
2.9 - 4.9 s
Max Speed
-
Max Speed
-
Torque
92 - 220 Nm
Torque
480 - 1,420 Nm
Number of Cylinders
3
Number of Cylinders
4 - 8
Power kW
48 - 87 kW
Power kW
280 - 600 kW
Engine capacity
999 cm3
Engine capacity
1,991 - 3,982 cm3

General
Model Year
2,025 - 2,026
Model Year
2025
CO2 Efficiency Class
A, D
CO2 Efficiency Class
G
Brand
Fiat
Brand
Mercedes-Benz
What drive types are available for the Fiat 500 Convertible?

The Fiat 500 Convertible is available as 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.