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Fiat 500 Convertible vs Mercedes C-Class Saloon comparison

Compare performance (118 HP vs 680 HP), boot space and price (19,700 £ vs 41,300 £ ) at a glance. Find out which car is the better choice for you – Fiat 500 Convertible or Mercedes C-Class Saloon?

Fiat 500 Convertible vs Mercedes C-Class Saloon: Key differences

Fiat 500 Convertible

  • substantially cheaper
  • clearly more electric range
  • considerably lighter
details

Mercedes C-Class Saloon

  • substantially more power
  • a bit more efficient
  • clearly quicker 0–100 km/h
  • clearly more trunk space
details

By Achim Sedelmaier

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

500 Convertible

Costs and Efficiency:

Price and efficiency are key factors when choosing a car – and this is often where the real differences emerge.

Fiat 500 Convertible is substantially cheaper – starting at 19,700 £ , while the Mercedes C-Class Saloon costs 41,300 £ . That’s a price difference of around 21,620 £.

Fuel consumption also shows a difference: the Mercedes C-Class Saloon uses 4.5 L/100km and is a bit more efficient than the Fiat 500 Convertible with 5.2 L/100km. The difference is about 0.7 L/100km.

As for electric range, the Fiat 500 Convertible offers clearly more range – reaching up to 313 km, about 302 km more than the Mercedes C-Class Saloon.

C-Class Saloon

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 C-Class Saloon offers substantially more power – delivering 680 HP compared to 118 HP. That’s roughly 562 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes C-Class Saloon is clearly quicker – completing the sprint in 3.4 s, while the Fiat 500 Convertible takes 9 s. That’s about 5.6 s quicker.

There’s also a difference in torque: the Mercedes C-Class Saloon delivers substantially more torque with 1,020 Nm compared to 220 Nm. That’s about 800 Nm more.

Space and Everyday Use:

Whether family car or daily driver – which one offers more room, flexibility and comfort?

Seats: Mercedes C-Class Saloon offers more seats – 5 vs 4.

In terms of curb weight, Fiat 500 Convertible is considerably lighter – 1,150 kg compared to 1,695 kg. The difference is around 545 kg.

Looking at boot space, the Mercedes C-Class Saloon offers clearly more boot space – 455 L compared to 183 L. That’s a difference of about 272 L.

When it comes to payload, the Mercedes C-Class Saloon carries clearly more – 570 kg compared to 325 kg. That’s a difference of about 245 kg.

Who wins the race in the data check?

The Mercedes C-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 £41,300
C-Class Saloon

Mercedes C-Class Saloon

  • Engine Type Petrol MHEV, Diesel MHEV, Plugin Hybrid
  • Transmission Automatic
  • Drive Type Rear-Wheel Drive, All-Wheel Drive
  • Power HP 183 - 680 HP
  • Consumption L/100km 4.5 - 9 L/100km
  • Electric Range 11 km
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Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
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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Reviews Fiat 500 Convertible

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Mercedes C-Class Saloon

The Mercedes C‑Class is the compact executive that dresses like it owns the boulevard, with an interior that blends modern elegance and plush comfort to make everyday driving feel unexpectedly special. On the road it pairs poise with a hint of cheeky agility, rewarding drivers who want refinement without forfeiting a touch of fun — and yes, it still looks great in the driveway.

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Fiat 500 Convertible
Mercedes C-Class Saloon

Costs and Consumption
Price
19,700 - 28,300 £
Price
41,300 - 103,400 £
Consumption L/100km
5.2 - 5.3 L/100km
Consumption L/100km
4.5 - 9 L/100km
Consumption kWh/100km
13 - 14.9 kWh/100km
Consumption kWh/100km
-
Electric Range
190 - 313 km
Electric Range
11 km
Battery Capacity
-
Battery Capacity
-
co2
0 - 123 g/km
co2
119 - 205 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Convertible
Body Type
Sedan
Seats
4
Seats
5
Doors
-
Doors
-
Curb weight
1,150 - 1,480 kg
Curb weight
1,695 - 2,165 kg
Trunk capacity
183 L
Trunk capacity
280 - 455 L
Length
-
Length
-
Width
1,683 - 1,684 mm
Width
1,820 - 1,900 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
250 - 325 kg
Payload
485 - 570 kg

Engine and Performance
Engine Type
Electric, Petrol MHEV
Engine Type
Petrol MHEV, Diesel MHEV, 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
183 - 680 HP
Acceleration 0-100km/h
9 - 17.3 s
Acceleration 0-100km/h
3.4 - 8.6 s
Max Speed
-
Max Speed
-
Torque
92 - 220 Nm
Torque
250 - 1,020 Nm
Number of Cylinders
3
Number of Cylinders
4
Power kW
48 - 87 kW
Power kW
135 - 500 kW
Engine capacity
999 cm3
Engine capacity
1,496 - 1,999 cm3

General
Model Year
2,025 - 2,026
Model Year
2,024 - 2,025
CO2 Efficiency Class
A, D
CO2 Efficiency Class
E, D, 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.