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Mercedes G-Class vs Fiat 500 Convertible comparison

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

Mercedes G-Class vs Fiat 500 Convertible: Key differences

Mercedes G-Class

  • considerably more power
  • clearly more electric range
  • clearly quicker 0–100 km/h
  • clearly more trunk space
details

Fiat 500 Convertible

  • substantially cheaper
  • clearly more efficient
  • clearly more efficient
  • clearly lighter
details

By Achim Sedelmaier

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

G-Class

Costs and Efficiency:

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

Fiat 500 Convertible is substantially 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 clearly 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 clearly 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 clearly more range – reaching up to 479 km, about 166 km more than the Fiat 500 Convertible.

500 Convertible

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 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 clearly more torque with 1,164 Nm compared to 220 Nm. That’s about 944 Nm more.

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

In terms of curb weight, Fiat 500 Convertible is clearly 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 clearly 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 stands well ahead of its rival 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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View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

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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18C0997_133
19C0473_066
18C0997_262

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

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

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

General
Model Year
2,025 - 2,026
Model Year
2,025 - 2,026
CO2 Efficiency Class
G, A
CO2 Efficiency Class
A, D
Brand
Mercedes-Benz
Brand
Fiat
What drivetrain options does the Mercedes G-Class have?

The Mercedes G-Class is available as 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.