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BMW 8 Series Convertible vs Porsche 911 Convertible - Differences and prices compared
Compare performance (625 HP vs 711 HP), boot space and price (99400 £ vs 122400 £ ) at a glance. Find out which car is the better choice for you – BMW 8 Series Convertible or Porsche 911 Convertible?
8 Series Convertible
Costs and Efficiency:
Price and efficiency are key factors when choosing a car – and this is often where the real differences emerge.
BMW 8 Series Convertible has a evident advantage in terms of price – it starts at 99400 £ , while the Porsche 911 Convertible costs 122400 £ . That’s a price difference of around 22972 £.
Fuel consumption also shows a difference: BMW 8 Series Convertible manages with 6.90 L and is therefore significantly more efficient than the Porsche 911 Convertible with 10.30 L. The difference is about 3.40 L per 100 km.
8 Series Convertible
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 Porsche 911 Convertible has a slightly edge – offering 711 HP compared to 625 HP. That’s roughly 86 HP more horsepower.
In acceleration from 0 to 100 km/h, the Porsche 911 Convertible is evident quicker – completing the sprint in 2.60 s, while the BMW 8 Series Convertible takes 3.30 s. That’s about 0.70 s faster.
In terms of top speed, the Porsche 911 Convertible performs noticeable better – reaching 322 km/h, while the BMW 8 Series Convertible tops out at 250 km/h. The difference is around 72 km/h.
There’s also a difference in torque: Porsche 911 Convertible pulls slight stronger with 800 Nm compared to 750 Nm. That’s about 50 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.
Both vehicles offer seating for 4 people.
In curb weight, Porsche 911 Convertible is somewhat lighter – 1655 kg compared to 1915 kg. The difference is around 260 kg.
In terms of boot space, the BMW 8 Series Convertible offers convincingly more room – 350 L compared to 163 L. That’s a difference of about 187 L.
When it comes to payload, BMW 8 Series Convertible a bit takes the win – 425 kg compared to 345 kg. That’s a difference of about 80 kg.
Who wins the race in the data check?
The BMW 8 Series Convertible is clearly superior 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.
BMW 8 Series Convertible
Porsche 911 Convertible
Costs and Consumption
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Engine and Performance
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Dimensions and Body
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from about £99,400
BMW 8 Series Convertible
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.
details
Porsche 911 Convertible
The Porsche 911 Cabriolet transforms the iconic silhouette into an open‑air weapon, offering roof-down glamour and razor-sharp handling that still feels perfectly composed on normal roads. It’s the kind of car that serves daily duties with surprising ease while delivering intoxicating engine music and a grin factor that makes every trip feel like a small victory.
details
BMW 8 Series Convertible
Porsche 911 Convertible
Costs and Consumption |
|
|---|---|
|
Price
99400 - 165800 £
|
Price
122400 - 244500 £
|
|
Consumption L/100km
6.9 - 11.2 L
|
Consumption L/100km
10.3 - 11.7 L
|
|
Consumption kWh/100km
-
|
Consumption kWh/100km
-
|
|
Electric Range
-
|
Electric Range
-
|
|
Battery Capacity
-
|
Battery Capacity
-
|
|
co2
180 - 255 g/km
|
co2
234 - 265 g/km
|
|
Fuel tank capacity
66 - 68 L
|
Fuel tank capacity
63 L
|
Dimensions and Body |
|
|---|---|
|
Body Type
Convertible
|
Body Type
Convertible
|
|
Seats
4
|
Seats
4
|
|
Doors
2
|
Doors
2
|
|
Curb weight
1915 - 2125 kg
|
Curb weight
1655 - 1900 kg
|
|
Trunk capacity
350 L
|
Trunk capacity
163 L
|
|
Length
4851 - 4867 mm
|
Length
4542 - 4553 mm
|
|
Width
1902 - 1907 mm
|
Width
1852 - 1900 mm
|
|
Height
1345 - 1353 mm
|
Height
1292 - 1302 mm
|
|
Max trunk capacity
-
|
Max trunk capacity
-
|
|
Payload
340 - 425 kg
|
Payload
275 - 345 kg
|
Engine and Performance |
|
|---|---|
|
Engine Type
Diesel MHEV, Petrol
|
Engine Type
Petrol, Full Hybrid
|
|
Transmission
Automatic
|
Transmission
Automatic, Manuel
|
|
Transmission Detail
Automatic Gearbox
|
Transmission Detail
Dual-Clutch Automatic, Manual Gearbox
|
|
Drive Type
All-Wheel Drive, Rear-Wheel Drive
|
Drive Type
Rear-Wheel Drive, All-Wheel Drive
|
|
Power HP
333 - 625 HP
|
Power HP
394 - 711 HP
|
|
Acceleration 0-100km/h
3.3 - 5.5 s
|
Acceleration 0-100km/h
2.6 - 4.7 s
|
|
Max Speed
250 km/h
|
Max Speed
291 - 322 km/h
|
|
Torque
500 - 750 Nm
|
Torque
450 - 800 Nm
|
|
Number of Cylinders
6 - 8
|
Number of Cylinders
6
|
|
Power kW
245 - 460 kW
|
Power kW
290 - 523 kW
|
|
Engine capacity
2993 - 4395 cm3
|
Engine capacity
2981 - 3591 cm3
|
General |
|
|---|---|
|
Model Year
2024
|
Model Year
2024 - 2026
|
|
CO2 Efficiency Class
G
|
CO2 Efficiency Class
G
|
|
Brand
BMW
|
Brand
Porsche
|
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.