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Ferrari Roma Convertible vs Mercedes B Class comparison

Compare performance (620 HP vs 238 HP), boot space and price (207,700 £ vs 33,100 £ ) at a glance. Find out which car is the better choice for you – Ferrari Roma Convertible or Mercedes B Class?

Ferrari Roma Convertible vs Mercedes B Class: Key differences

Ferrari Roma Convertible

  • significantly more power
  • clearly quicker 0–100 km/h
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Mercedes B Class

4.9 (6 Reviews)
rate
  • significantly cheaper
  • significantly more efficient
  • moderately lighter
  • significantly more trunk space
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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

Roma 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.

Mercedes B Class is significantly cheaper – starting at 33,100 £ , while the Ferrari Roma Convertible costs 207,700 £ . That’s a price difference of around 174,570 £.

Fuel consumption also shows a difference: the Mercedes B Class uses 5.1 L/100km and is significantly more efficient than the Ferrari Roma Convertible with 10.3 L/100km. The difference is about 5.2 L/100km.

B 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 Ferrari Roma Convertible offers significantly more power – delivering 620 HP compared to 238 HP. That’s roughly 382 HP more horsepower.

When accelerating from 0 to 100 km/h, the Ferrari Roma Convertible is clearly quicker – completing the sprint in 3.4 s, while the Mercedes B Class takes 6.5 s. That’s about 3.1 s quicker.

There’s also a difference in torque: the Ferrari Roma Convertible delivers significantly more torque with 760 Nm compared to 400 Nm. That’s about 360 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.

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

In terms of curb weight, Mercedes B Class is moderately lighter – 1,405 kg compared to 1,654 kg. The difference is around 249 kg.

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

Who wins the race in the data check?

The Mercedes B Class 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 £33,100
B Class

Mercedes B Class

  • Engine Type Petrol MHEV, Diesel
  • Transmission Automatic
  • Drive Type Front-Wheel Drive, All-Wheel Drive
  • Power HP 116 - 238 HP
  • Consumption L/100km 5.1 - 6.9 L/100km
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Frequently compared as well

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Mercedes B Class
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Mercedes B Class
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Ferrari Roma Convertible
Mercedes B Class

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Ferrari Roma Convertible

The Ferrari Roma Spider dresses the marque’s drama in a restrained, almost polite suit, folding its roof away to reveal a cabin that feels as civilized as it does intoxicating. Behind the wheel it serves grand touring manners with a playful shove and soundtrack, perfect for drivers who want thrilling Ferrari emotion without the daily fuss.

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Reviews Ferrari Roma Convertible

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

Mercedes B Class

The Mercedes B-Class is a smart, grown-up compact people carrier that dresses everyday practicality in a near‑premium polish, perfect for buyers who want comfort and a classy badge without the theatrics. It won’t set your pulse racing on a back road, but it will make school runs, commutes and grocery hauls feel pleasantly civilized — a reliable, slightly posh companion for real life.

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Reviews Mercedes B Class

4.9 (6 Reviews)
rate
SiBa
31 Jul 2026, 14:51:34

We've been driving only the B180D automatic for 9 years — there's nothing better. Great on long trips; the next one will be another B180D automatic.

How do you mainly use this car? (optional): Family car
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Safety
Practicality / Trunk & Everyday Use
Value for Money
Peter
5 Mar 2026, 05:51:19

My wife and I have been driving a Mercedes W247 200d for seven years now, with 93,000 km on the clock. The car is very comfortable even on long trips and economical. At the last service the pads of the electric parking brake were replaced; otherwise no repairs. We love this car.

How do you mainly use this car? (optional): Family car
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money

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Mercedes B Class
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Ferrari Roma Convertible
Mercedes B Class

Costs and Consumption
Price
207,700 £
Price
33,100 - 52,500 £
Consumption L/100km
10.3 L/100km
Consumption L/100km
5.1 - 6.9 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
234 g/km
co2
133 - 156 g/km
Fuel tank capacity
80 L
Fuel tank capacity
-

Dimensions and Body
Body Type
Convertible
Body Type
MPV
Seats
4
Seats
5
Doors
2
Doors
-
Curb weight
1,654 kg
Curb weight
1,405 - 1,565 kg
Trunk capacity
272 L
Trunk capacity
445 - 455 L
Length
4,656 mm
Length
-
Width
1,974 mm
Width
1,796 mm
Height
1,306 mm
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
-
Payload
515 - 550 kg

Engine and Performance
Engine Type
Petrol
Engine Type
Petrol MHEV, Diesel
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Dual-Clutch Automatic
Transmission Detail
Dual-Clutch Automatic
Drive Type
Rear-Wheel Drive
Drive Type
Front-Wheel Drive, All-Wheel Drive
Power HP
620 HP
Power HP
116 - 238 HP
Acceleration 0-100km/h
3.4 s
Acceleration 0-100km/h
6.5 - 10 s
Max Speed
320 km/h
Max Speed
-
Torque
760 Nm
Torque
200 - 400 Nm
Number of Cylinders
8
Number of Cylinders
4
Power kW
456 kW
Power kW
85 - 175 kW
Engine capacity
3,855 cm3
Engine capacity
1,332 - 1,991 cm3

General
Model Year
2023
Model Year
2025
CO2 Efficiency Class
G
CO2 Efficiency Class
D, E, F
Brand
Ferrari
Brand
Mercedes-Benz
What drivetrain options does the Ferrari Roma Convertible have?

The Ferrari Roma Convertible is offered with 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.