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Mercedes S-Class vs Fiat 500 comparison

Compare performance (635 HP vs 118 HP), boot space and price (104,000 £ vs 17,100 £ ) at a glance. Find out which car is the better choice for you – Mercedes S-Class or Fiat 500?

Mercedes S-Class vs Fiat 500: Key differences

Mercedes S-Class

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

Fiat 500

3.7 (1 Reviews)
rate
  • significantly cheaper
  • significantly more electric range
  • clearly lighter
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

S-Class

Costs and Efficiency:

Price and efficiency are often the first things buyers look at. Here it becomes clear which model has the long-term edge – whether at the pump, the plug, or in purchase price.

Fiat 500 is significantly cheaper – starting at 17,100 £ , while the Mercedes S-Class costs 104,000 £ . That’s a price difference of around 86,885 £.

Fuel consumption also shows a difference: the Mercedes S-Class uses 2.2 L/100km and is significantly more efficient than the Fiat 500 with 5.2 L/100km. The difference is about 3 L/100km.

As for electric range, the Fiat 500 offers significantly more range – reaching up to 331 km, about 213 km more than the Mercedes S-Class.

500

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 S-Class offers clearly more power – delivering 635 HP compared to 118 HP. That’s roughly 517 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes S-Class is clearly quicker – completing the sprint in 4 s, while the Fiat 500 takes 9 s. That’s about 5 s quicker.

There’s also a difference in torque: the Mercedes S-Class delivers considerably more torque with 850 Nm compared to 220 Nm. That’s about 630 Nm more.

S-Class

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 S-Class offers more seats – 5 vs 4.

In terms of curb weight, Fiat 500 is clearly lighter – 1,130 kg compared to 2,165 kg. The difference is around 1,035 kg.

Looking at boot space, the Mercedes S-Class offers significantly more boot space – 530 L compared to 185 L. That’s a difference of about 345 L.

When it comes to payload, the Mercedes S-Class carries clearly more – 660 kg compared to 325 kg. That’s a difference of about 335 kg.

Who wins the race in the data check?

The Mercedes S-Class sits just 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 £104,000
S-Class

Mercedes S-Class

  • Engine Type Petrol MHEV, Plugin Hybrid, Diesel MHEV
  • Transmission Automatic
  • Drive Type All-Wheel Drive, Rear-Wheel Drive
  • Power HP 336 - 635 HP
  • Consumption L/100km 2.2 - 11 L/100km
  • Electric Range 98 - 118 km
details

Frequently compared as well

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Fiat 600
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Mercedes S-Class
Fiat 500

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Mercedes S-Class

The Mercedes S-Class wraps peerless comfort, whisper-quiet luxury and subtle tech wizardry into a chauffeur-ready package that still knows how to engage the driver. It’s the car for buyers who want to arrive relaxed, be taken seriously and occasionally enjoy a grin when the road reminds them this limousine can dance.

details
21C0428_003
21C0428_004
21C0613_021
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21C0613_042
21C0613_043

Reviews Mercedes S-Class

No reviews yet. Share your experience and help others decide.

Fiat 500

The Fiat 500 is a cheeky, retro‑styled city car that turns heads with its iconic looks and playful personality. Perfect for weaving through tight streets and easing into tiny parking spots, it’s aimed at buyers who want style and character more than grand touring prowess.

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190624_F_500_Lounge_MY2020_06
190624_F_500_Lounge_MY2020_10
190624_F_500_Lounge_MY2020_03

Reviews Fiat 500

3.7 (1 Reviews)
rate
Reijo Muhonen
28 Feb 2026, 16:46:06

I've owned both cars, and I still end up with the Fiat 500 — it always puts me in a good mood. For longer trips I take the train.

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 S-Class
Fiat 500

Costs and Consumption
Price
104,000 - 201,400 £
Price
17,100 - 27,400 £
Consumption L/100km
2.2 - 11 L/100km
Consumption L/100km
5.2 - 5.3 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
13 - 14.7 kWh/100km
Electric Range
98 - 118 km
Electric Range
190 - 331 km
Battery Capacity
-
Battery Capacity
-
co2
50 - 252 g/km
co2
0 - 121 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Sedan
Body Type
Hatchback
Seats
5
Seats
4
Doors
-
Doors
-
Curb weight
2,165 - 2,650 kg
Curb weight
1,130 - 1,475 kg
Trunk capacity
345 - 530 L
Trunk capacity
183 - 185 L
Length
-
Length
-
Width
1,921 mm
Width
1,683 - 1,684 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
420 - 660 kg
Payload
250 - 325 kg

Engine and Performance
Engine Type
Petrol MHEV, Plugin Hybrid, Diesel MHEV
Engine Type
Electric, Petrol MHEV
Transmission
Automatic
Transmission
Automatic, Manuel
Transmission Detail
Automatic Gearbox
Transmission Detail
Reduction Gearbox, Manual Gearbox
Drive Type
All-Wheel Drive, Rear-Wheel Drive
Drive Type
Front-Wheel Drive
Power HP
336 - 635 HP
Power HP
65 - 118 HP
Acceleration 0-100km/h
4 - 5.7 s
Acceleration 0-100km/h
9 - 16.2 s
Max Speed
-
Max Speed
-
Torque
560 - 850 Nm
Torque
92 - 220 Nm
Number of Cylinders
6 - 8
Number of Cylinders
3
Power kW
247 - 467 kW
Power kW
48 - 87 kW
Engine capacity
2,989 - 3,982 cm3
Engine capacity
999 cm3

General
Model Year
2026
Model Year
2025
CO2 Efficiency Class
G, B, F
CO2 Efficiency Class
A, D
Brand
Mercedes-Benz
Brand
Fiat
Is the Mercedes S-Class offered with different drivetrains?

The Mercedes S-Class is offered with All-Wheel Drive or Rear-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.