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Fiat 500 Convertible vs Mercedes G-Class comparison

Compare performance (118 HP vs 605 HP), boot space and price (19,700 £ vs 106,600 £ ) at a glance. Find out which car is the better choice for you – Fiat 500 Convertible or Mercedes G-Class?

Fiat 500 Convertible vs Mercedes G-Class: Key differences

Fiat 500 Convertible

  • considerably cheaper
  • substantially more efficient
  • significantly more efficient
  • substantially lighter
details

Mercedes G-Class

  • considerably more power
  • visibly more electric range
  • clearly quicker 0–100 km/h
  • substantially 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 considerably cheaper – starting at 19,700 £ , while the Mercedes G-Class costs 106,600 £ . That’s a price difference of around 86,885 £.

Fuel consumption also shows a difference: the Fiat 500 Convertible uses 5.2 L/100km and is substantially more efficient than the Mercedes G-Class with 8.7 L/100km. The difference is about 3.5 L/100km.

In terms of energy consumption, the Fiat 500 Convertible is significantly more efficient: consuming 13 kWh/100km compared to 28 kWh/100km for the Mercedes G-Class. That’s a difference of about 15 kWh/100km.

As for electric range, the Mercedes G-Class offers visibly more range – reaching up to 479 km, about 166 km more than the Fiat 500 Convertible.

G-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 G-Class offers considerably more power – delivering 605 HP compared to 118 HP. That’s roughly 487 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes G-Class is clearly quicker – completing the sprint in 4.4 s, while the Fiat 500 Convertible takes 9 s. That’s about 4.6 s quicker.

There’s also a difference in torque: the Mercedes G-Class delivers substantially more torque with 1,164 Nm compared to 220 Nm. That’s about 944 Nm more.

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.

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

In terms of curb weight, Fiat 500 Convertible is substantially lighter – 1,150 kg compared to 2,485 kg. The difference is around 1,335 kg.

Looking at boot space, the Mercedes G-Class offers substantially more boot space – 640 L compared to 183 L. That’s a difference of about 457 L.

When it comes to payload, the Mercedes G-Class carries clearly more – 715 kg compared to 325 kg. That’s a difference of about 390 kg.

Who wins the race in the data check?

The Fiat 500 Convertible 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 £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
details

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View detailed analysis

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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 G-Class

The G-Class, often called the G‑Wagen, is a blocky icon that blends unapologetic off-road prowess with a plush, modern cabin, announcing your arrival before you even step out. It’s equally at home crawling over rocks or cruising city streets, and owning one feels like adopting a very expensive, very capable personality.

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Fiat 500 Convertible
Mercedes G-Class

Costs and Consumption
Price
19,700 - 28,300 £
Price
106,600 - 171,000 £
Consumption L/100km
5.2 - 5.3 L/100km
Consumption L/100km
8.7 - 14.7 L/100km
Consumption kWh/100km
13 - 14.9 kWh/100km
Consumption kWh/100km
28 kWh/100km
Electric Range
190 - 313 km
Electric Range
479 km
Battery Capacity
-
Battery Capacity
-
co2
0 - 123 g/km
co2
0 - 336 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Convertible
Body Type
Off-Roader
Seats
4
Seats
5
Doors
-
Doors
-
Curb weight
1,150 - 1,480 kg
Curb weight
2,485 - 3,085 kg
Trunk capacity
183 L
Trunk capacity
640 L
Length
-
Length
-
Width
1,683 - 1,684 mm
Width
1,931 - 1,984 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
250 - 325 kg
Payload
115 - 715 kg

Engine and Performance
Engine Type
Electric, Petrol MHEV
Engine Type
Petrol MHEV, Diesel MHEV, Electric
Transmission
Automatic, Manuel
Transmission
Automatic
Transmission Detail
Reduction Gearbox, Manual Gearbox
Transmission Detail
Automatic Gearbox, Reduction Gearbox
Drive Type
Front-Wheel Drive
Drive Type
All-Wheel Drive
Power HP
65 - 118 HP
Power HP
387 - 605 HP
Acceleration 0-100km/h
9 - 17.3 s
Acceleration 0-100km/h
4.4 - 5.8 s
Max Speed
-
Max Speed
-
Torque
92 - 220 Nm
Torque
760 - 1,164 Nm
Number of Cylinders
3
Number of Cylinders
6 - 8
Power kW
48 - 87 kW
Power kW
285 - 445 kW
Engine capacity
999 cm3
Engine capacity
2,989 - 3,982 cm3

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