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Mercedes B Class vs Ferrari Roma Convertible comparison

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

Mercedes B Class vs Ferrari Roma Convertible: Key differences

Mercedes B Class

4.9 (5 Reviews)
rate
  • substantially cheaper
  • considerably more efficient
  • a bit lighter
  • significantly more trunk space
details

Ferrari Roma Convertible

  • significantly more power
  • considerably quicker 0–100 km/h
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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

B 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.

Mercedes B Class is substantially 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 considerably 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 are the classic benchmarks for car enthusiasts – and here, some clear differences start to show.

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 considerably 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 clearly more torque with 760 Nm compared to 400 Nm. That’s about 360 Nm more.

B 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 B Class offers more seats – 5 vs 4.

In terms of curb weight, Mercedes B Class is a bit 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 holds a decisive overall lead 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

Mercedes A Class
Mercedes B Class
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Mercedes B Class
Mercedes GLA
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The Mercedes B‑Class is the practical, airy people‑carrier that prioritises space and comfort, while the Mercedes GLA takes the same mechanical smarts and adds SUV looks, higher ride height and a touch more road presence. Pick the B‑Class for family‑friendly sense and efficiency, choose the GLA if …
Mercedes B Class
Ferrari Roma Convertible

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

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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18C0947_009
18C0953_005
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Reviews Mercedes B Class

4.9 (5 Reviews)
rate
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

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.

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Mercedes B Class
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In a head-to-head comparison, the Mercedes B-Klasse and Volvo XC40 each present unique appeals to different driving preferences. The Mercedes B-Klasse, with its refined elegance and advanced technology, offers a smooth ride and functional versatility ideal for families. On the other hand, the Volvo …
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Mercedes B Class
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Mercedes B Class
Ferrari Roma Convertible

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

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

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

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

Available configurations include Front-Wheel Drive or 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.