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BMW 8 Series Convertible vs BMW 4 Series Convertible comparison

Compare performance (625 HP vs 530 HP), boot space and price (99,400 £ vs 52,100 £ ) at a glance. Find out which car is the better choice for you – BMW 8 Series Convertible or BMW 4 Series Convertible?

BMW 8 Series Convertible vs BMW 4 Series Convertible: Key differences

BMW 8 Series Convertible

  • somewhat more power
  • moderately quicker 0–100 km/h
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BMW 4 Series Convertible

  • substantially cheaper
  • clearly more efficient
  • very slightly lighter
  • very slightly more trunk space
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By Achim Sedelmaier

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

8 Series Convertible

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.

BMW 4 Series Convertible is substantially cheaper – starting at 52,100 £ , while the BMW 8 Series Convertible costs 99,400 £ . That’s a price difference of around 47,314 £.

Fuel consumption also shows a difference: the BMW 4 Series Convertible uses 5.2 L/100km and is clearly more efficient than the BMW 8 Series Convertible with 6.9 L/100km. The difference is about 1.7 L/100km.

4 Series 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 BMW 8 Series Convertible offers somewhat more power – delivering 625 HP compared to 530 HP. That’s roughly 95 HP more horsepower.

When accelerating from 0 to 100 km/h, the BMW 8 Series Convertible is moderately quicker – completing the sprint in 3.3 s, while the BMW 4 Series Convertible takes 3.7 s. That’s about 0.4 s quicker.

There’s also a difference in torque: the BMW 8 Series Convertible delivers very slightly more torque with 750 Nm compared to 700 Nm. That’s about 50 Nm more.

8 Series Convertible

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.

Both vehicles offer seating for 4 people.

In terms of curb weight, BMW 4 Series Convertible is very slightly lighter – 1,765 kg compared to 1,915 kg. The difference is around 150 kg.

Looking at boot space, the BMW 4 Series Convertible offers very slightly more boot space – 385 L compared to 350 L. That’s a difference of about 35 L.

When it comes to payload, the BMW 8 Series Convertible carries only slightly more – 425 kg compared to 420 kg. That’s a difference of about 5 kg.

Who wins the race in the data check?

The BMW 4 Series Convertible is far 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 £52,100
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
BMW 8 Series Convertible
BMW 4 Series Convertible

Costs and Consumption

View detailed analysis

Engine and Performance

View detailed analysis

Dimensions and Body

View detailed analysis

BMW 8 Series Convertible

The BMW 8 Series Convertible is a head-turning grand tourer that drops its roof with the kind of theatrical flourish you expect from a modern Bavarian showboat. It wraps occupants in sumptuous materials and driver-focused polish, offering effortless long-distance comfort and just enough drama to make every arrival feel like an occasion.

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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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BMW 8 Series Convertible
BMW 4 Series Convertible

Costs and Consumption

Price
99,400 - 165,800 £
Price
52,100 - 96,600 £
Consumption L/100km
6.9 - 11.2 L/100km
Consumption L/100km
5.2 - 10.2 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
180 - 255 g/km
co2
136 - 231 g/km
Fuel tank capacity
66 - 68 L
Fuel tank capacity
-

Dimensions and Body

Body Type
Convertible
Body Type
Convertible
Seats
4
Seats
4
Doors
2
Doors
-
Curb weight
1,915 - 2,125 kg
Curb weight
1,765 - 2,055 kg
Trunk capacity
350 L
Trunk capacity
385 L
Length
4,851 - 4,867 mm
Length
-
Width
1,902 - 1,907 mm
Width
1,852 - 1,887 mm
Height
1,345 - 1,353 mm
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
340 - 425 kg
Payload
345 - 420 kg

Engine and Performance

Engine Type
Diesel MHEV, Petrol
Engine Type
Diesel MHEV, Petrol, Petrol MHEV
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Automatic Gearbox
Transmission Detail
Automatic Gearbox
Drive Type
All-Wheel Drive, Rear-Wheel Drive
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Power HP
333 - 625 HP
Power HP
184 - 530 HP
Acceleration 0-100km/h
3.3 - 5.5 s
Acceleration 0-100km/h
3.7 - 8.2 s
Max Speed
250 km/h
Max Speed
-
Torque
500 - 750 Nm
Torque
300 - 700 Nm
Number of Cylinders
6 - 8
Number of Cylinders
4 - 6
Power kW
245 - 460 kW
Power kW
135 - 390 kW
Engine capacity
2,993 - 4,395 cm3
Engine capacity
1,995 - 2,998 cm3

General

Model Year
2024
Model Year
2,024 - 2,025
CO2 Efficiency Class
G
CO2 Efficiency Class
E, F, G
Brand
BMW
Brand
BMW
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.