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BMW 8 Series Convertible vs BMW iX - Differences and prices compared

Compare performance (625 HP vs 659 HP), boot space and price (99400 £ vs 71600 £ ) at a glance. Find out which car is the better choice for you – BMW 8 Series Convertible or BMW iX?

BMW 8 Series Convertible

BMW iX

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

8 Series Convertible

Costs and Efficiency:

Looking at overall running costs, both models reveal some interesting differences in everyday economy.

BMW iX has a clearly perceptible advantage in terms of price – it starts at 71600 £ , while the BMW 8 Series Convertible costs 99400 £ . That’s a price difference of around 27857 £.

iX

Engine and Performance:

Under the bonnet, it becomes clear which model is tuned for sportiness and which one takes the lead when you hit the accelerator.

When it comes to engine power, the BMW iX has a minimal edge – offering 659 HP compared to 625 HP. That’s roughly 34 HP more horsepower.

In acceleration from 0 to 100 km/h, the BMW 8 Series Convertible is slightly quicker – completing the sprint in 3.30 s, while the BMW iX takes 3.80 s. That’s about 0.50 s faster.

There’s no difference in top speed – both reach 250 km/h.

There’s also a difference in torque: BMW iX pulls clearly perceptible stronger with 1015 Nm compared to 750 Nm. That’s about 265 Nm difference.

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.

Seats: BMW iX offers somewhat more seating capacity – 5 vs 4.

In curb weight, BMW 8 Series Convertible is clearly perceptible lighter – 1915 kg compared to 2525 kg. The difference is around 610 kg.

In terms of boot space, the BMW iX offers evident more room – 500 L compared to 350 L. That’s a difference of about 150 L.

When it comes to payload, BMW iX clearly perceptible takes the win – 575 kg compared to 425 kg. That’s a difference of about 150 kg.

Who wins the race in the data check?

The BMW iX is decisively ahead 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.

BMW 8 Series Convertible
BMW iX

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis
from about £71,600
iX

BMW iX

  • Engine Type : Electric
  • Transmission : Automatic
  • Drive Type : All-Wheel Drive
  • Power HP : 408 - 659 HP
  • Consumption kWh/100km : 17.8 - 20.6 kWh
  • Electric Range : 600 - 701 km
details

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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P90343983_highRes_the-new-bmw-m850i-xd
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BMW iX

The BMW iX arrives like a tech-rich luxury SUV that refuses to shout, offering a serene yet authoritative road presence that suits both city commutes and long-distance cruising. Inside, its minimalist cabin wraps high-quality materials and clever interfaces around a driver-focused layout, making it feel more like a forward-thinking lounge than just another electric appliance — and yes, it still delivers the dynamic driving character you'd expect from a BMW.

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P90464063_highRes_bmw-ix-m60-05-2022
P90464066_highRes_bmw-ix-m60-05-2022
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Reviews BMW 8 Series Convertible

Reviews BMW iX

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Costs and Consumption
Price
99400 - 165800 £
Price
71600 - 107100 £
Consumption L/100km
6.9 - 11.2 L
Consumption L/100km
-
Consumption kWh/100km
-
Consumption kWh/100km
17.8 - 20.6 kWh
Electric Range
-
Electric Range
600 - 701 km
Battery Capacity
-
Battery Capacity
96 - 109.6 kWh
co2
180 - 255 g/km
co2
0 g/km
Fuel tank capacity
66 - 68 L
Fuel tank capacity
-

Dimensions and Body
Body Type
Convertible
Body Type
SUV
Seats
4
Seats
5
Doors
2
Doors
5
Curb weight
1915 - 2125 kg
Curb weight
2525 - 2655 kg
Trunk capacity
350 L
Trunk capacity
500 L
Length
4851 - 4867 mm
Length
4965 mm
Width
1902 - 1907 mm
Width
1970 mm
Height
1345 - 1353 mm
Height
1688 - 1695 mm
Max trunk capacity
-
Max trunk capacity
1750 L
Payload
340 - 425 kg
Payload
505 - 575 kg

Engine and Performance
Engine Type
Diesel MHEV, Petrol
Engine Type
Electric
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Automatic Gearbox
Transmission Detail
Reduction Gearbox
Drive Type
All-Wheel Drive, Rear-Wheel Drive
Drive Type
All-Wheel Drive
Power HP
333 - 625 HP
Power HP
408 - 659 HP
Acceleration 0-100km/h
3.3 - 5.5 s
Acceleration 0-100km/h
3.8 - 5.1 s
Max Speed
250 km/h
Max Speed
200 - 250 km/h
Torque
500 - 750 Nm
Torque
700 - 1015 Nm
Number of Cylinders
6 - 8
Number of Cylinders
-
Power kW
245 - 460 kW
Power kW
300 - 485 kW
Engine capacity
2993 - 4395 cm3
Engine capacity
-

General
Model Year
2024
Model Year
2025
CO2 Efficiency Class
G
CO2 Efficiency Class
A
Brand
BMW
Brand
BMW

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What drive types are available for the BMW 8 Series Convertible?

Available configurations include All-Wheel Drive or Rear-Wheel Drive.

The prices shown are estimates based on German list prices, adjusted for local VAT. Local registration taxes (e.g. NoVA, BPM or CO2 malus) are not included. This information is not legally binding.