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BMW 4 Series Convertible vs Bentley Flying Spur comparison

Compare performance (530 HP vs 550 HP), boot space and price (52,600 £ vs 180,900 £ ) at a glance. Find out which car is the better choice for you – BMW 4 Series Convertible or Bentley Flying Spur?

BMW 4 Series Convertible vs Bentley Flying Spur: Key differences

BMW 4 Series Convertible

  • significantly cheaper
  • slightly quicker 0–100 km/h
  • clearly lighter
details

Bentley Flying Spur

  • barely more power
  • clearly more efficient
  • marginally more trunk space
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By Achim Sedelmaier

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

4 Series 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.

BMW 4 Series Convertible is significantly cheaper – starting at 52,600 £ , while the Bentley Flying Spur costs 180,900 £ . That’s a price difference of around 128,229 £.

Fuel consumption also shows a difference: the Bentley Flying Spur uses 3.3 L/100km and is clearly more efficient than the BMW 4 Series Convertible with 5.2 L/100km. The difference is about 1.9 L/100km.

Flying Spur

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 Bentley Flying Spur offers barely more power – delivering 550 HP compared to 530 HP. That’s roughly 20 HP more horsepower.

When accelerating from 0 to 100 km/h, the BMW 4 Series Convertible is slightly quicker – completing the sprint in 3.7 s, while the Bentley Flying Spur takes 4.1 s. That’s about 0.4 s quicker.

There’s also a difference in torque: the Bentley Flying Spur delivers very slightly more torque with 770 Nm compared to 700 Nm. That’s about 70 Nm more.

4 Series Convertible

Space and Everyday Use:

Cabin size, boot volume and payload all play a role in everyday practicality. Here, comfort and flexibility make the difference.

Both vehicles offer seating for 4 people.

In terms of curb weight, BMW 4 Series Convertible is clearly lighter – 1,765 kg compared to 2,330 kg. The difference is around 565 kg.

Looking at boot space, the Bentley Flying Spur offers marginally more boot space – 420 L compared to 385 L. That’s a difference of about 35 L.

When it comes to payload, the Bentley Flying Spur carries visibly more – 650 kg compared to 420 kg. That’s a difference of about 230 kg.

Who wins the race in the data check?

The BMW 4 Series Convertible shows a few small advantages 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 £52,600
4 Series Convertible

BMW 4 Series Convertible

  • Engine Type Diesel MHEV, Petrol, Petrol MHEV
  • Transmission Automatic
  • Drive Type Rear-Wheel Drive, All-Wheel Drive
  • Power HP 184 - 530 HP
  • Consumption L/100km 5.2 - 10.2 L/100km
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Frequently compared as well

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Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

BMW 4 Series Convertible

The BMW 4 Series Convertible blends coupe-like elegance with open-top drama, its sleek profile and distinctive grille demanding attention whether the roof’s up or down. Behind the wheel it serves up taut handling and a refined ride, making it a rewarding choice for drivers who want sporty character without sacrificing everyday comfort — and yes, it looks spectacular when you drop the top.

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Reviews BMW 4 Series Convertible

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Bentley Flying Spur

The Bentley Flying Spur wraps landmark luxury and bespoke British craft into a sedan that feels like a private members' club you can park in your driveway. It delivers chauffeur-grade comfort wrapped in driver-focused poise, turning an ordinary commute into a memorably grand arrival.

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Flying Spur Speed - 1
Flying Spur Speed - 2
Flying Spur Speed - 9
Flying Spur Speed - 11
Flying Spur Speed - 12

Reviews Bentley Flying Spur

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Bentley Flying Spur

Costs and Consumption
Price
52,600 - 97,800 £
Price
180,900 - 186,300 £
Consumption L/100km
5.2 - 10.2 L/100km
Consumption L/100km
3.3 - 12.7 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
41 km
Battery Capacity
-
Battery Capacity
18 kWh
co2
136 - 231 g/km
co2
75 - 288 g/km
Fuel tank capacity
-
Fuel tank capacity
80 - 90 L

Dimensions and Body
Body Type
Convertible
Body Type
Sedan
Seats
4
Seats
4
Doors
-
Doors
4
Curb weight
1,765 - 2,055 kg
Curb weight
2,330 - 2,505 kg
Trunk capacity
385 L
Trunk capacity
420 L
Length
-
Length
5,316 mm
Width
1,852 - 1,887 mm
Width
2,013 mm
Height
-
Height
1,483 mm
Max trunk capacity
-
Max trunk capacity
-
Payload
345 - 420 kg
Payload
525 - 650 kg

Engine and Performance
Engine Type
Diesel MHEV, Petrol, Petrol MHEV
Engine Type
Plugin Hybrid, Petrol
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Automatic Gearbox
Transmission Detail
Dual-Clutch Automatic
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Drive Type
All-Wheel Drive
Power HP
184 - 530 HP
Power HP
544 - 550 HP
Acceleration 0-100km/h
3.7 - 8.2 s
Acceleration 0-100km/h
4.1 - 4.3 s
Max Speed
-
Max Speed
285 - 318 km/h
Torque
300 - 700 Nm
Torque
750 - 770 Nm
Number of Cylinders
4 - 6
Number of Cylinders
6 - 8
Power kW
135 - 390 kW
Power kW
400 - 404 kW
Engine capacity
1,995 - 2,998 cm3
Engine capacity
2,894 - 3,996 cm3

General
Model Year
2,024 - 2,025
Model Year
2,021 - 2,022
CO2 Efficiency Class
E, F, G
CO2 Efficiency Class
B, G
Brand
BMW
Brand
Bentley
What drive types are available for the BMW 4 Series Convertible?

The BMW 4 Series Convertible is available as Rear-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.