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BMW 7 Series vs Porsche 911 Convertible comparison

Compare performance (571 HP vs 711 HP), boot space and price (102,800 £ vs 122,400 £ ) at a glance. Find out which car is the better choice for you – BMW 7 Series or Porsche 911 Convertible?

BMW 7 Series vs Porsche 911 Convertible: Key differences

BMW 7 Series

  • a bit cheaper
  • considerably more efficient
  • clearly more trunk space

Porsche 911 Convertible

  • moderately more power
  • substantially quicker 0–100 km/h
  • noticeably lighter

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

7 Series

Costs and Efficiency:

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

BMW 7 Series is a bit cheaper – starting at 102,800 £ , while the Porsche 911 Convertible costs 122,400 £ . That’s a price difference of around 19,629 £.

Fuel consumption also shows a difference: the BMW 7 Series uses 3.3 L/100km and is considerably more efficient than the Porsche 911 Convertible with 10.3 L/100km. The difference is about 7 L/100km.

911 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 Porsche 911 Convertible offers moderately more power – delivering 711 HP compared to 571 HP. That’s roughly 140 HP more horsepower.

When accelerating from 0 to 100 km/h, the Porsche 911 Convertible is substantially quicker – completing the sprint in 2.6 s, while the BMW 7 Series takes 4.3 s. That’s about 1.7 s quicker.

Looking at top speed, the Porsche 911 Convertible is somewhat faster – reaching 312 km/h, while the BMW 7 Series tops out at 250 km/h. The difference is around 62 km/h.

Both models offer the same torque – 800 Nm.

7 Series

Space and Everyday Use:

Whether family car or daily driver – which one offers more room, flexibility and comfort?

Seats: BMW 7 Series offers more seats – 5 vs 4.

In terms of curb weight, Porsche 911 Convertible is noticeably lighter – 1,655 kg compared to 2,255 kg. The difference is around 600 kg.

Looking at boot space, the BMW 7 Series offers clearly more boot space – 540 L compared to 163 L. That’s a difference of about 377 L.

When it comes to payload, the BMW 7 Series carries considerably more – 665 kg compared to 345 kg. That’s a difference of about 320 kg.

Who wins the race in the data check?

The BMW 7 Series 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.

from £102,800
7 Series

BMW 7 Series

  • Engine Type : Diesel MHEV, Plugin Hybrid
  • Transmission : Automatic
  • Drive Type : All-Wheel Drive
  • Power HP : 300 - 571 HP
  • Consumption L/100km : 3.3 - 6.1 L/100km
  • Electric Range : 80 km
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Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

BMW 7 Series

The BMW 7 Series is a flagship that balances whisper-quiet luxury with a driver's focus, wrapping advanced tech and plush comfort in a sleek, authoritative presence. It’s the kind of car that navigates city traffic and open roads with equal poise, offering a grown-up alternative for buyers who demand refinement without losing a little driving fun.

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Reviews BMW 7 Series

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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.

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Reviews Porsche 911 Convertible

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BMW 7 Series
Porsche 911 Convertible

Costs and Consumption
Price
102,800 - 127,500 £
Price
122,400 - 244,500 £
Consumption L/100km
3.3 - 6.1 L/100km
Consumption L/100km
10.3 - 11.7 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
80 km
Electric Range
-
Battery Capacity
17.6 kWh
Battery Capacity
-
co2
74 - 160 g/km
co2
234 - 265 g/km
Fuel tank capacity
65 L
Fuel tank capacity
63 L

Dimensions and Body
Body Type
Sedan
Body Type
Convertible
Seats
5
Seats
4
Doors
4
Doors
2
Curb weight
2,255 - 2,525 kg
Curb weight
1,655 - 1,900 kg
Trunk capacity
525 - 540 L
Trunk capacity
163 L
Length
5,391 mm
Length
4,542 - 4,553 mm
Width
1,950 mm
Width
1,852 - 1,900 mm
Height
1,544 mm
Height
1,292 - 1,298 mm
Max trunk capacity
-
Max trunk capacity
-
Payload
605 - 665 kg
Payload
275 - 345 kg

Engine and Performance
Engine Type
Diesel MHEV, Plugin Hybrid
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
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Power HP
300 - 571 HP
Power HP
394 - 711 HP
Acceleration 0-100km/h
4.3 - 5.8 s
Acceleration 0-100km/h
2.6 - 4.7 s
Max Speed
250 km/h
Max Speed
291 - 312 km/h
Torque
670 - 800 Nm
Torque
450 - 800 Nm
Number of Cylinders
6
Number of Cylinders
6
Power kW
220 - 420 kW
Power kW
290 - 523 kW
Engine capacity
2,993 - 2,998 cm3
Engine capacity
2,981 - 3,591 cm3

General
Model Year
2,024 - 2,025
Model Year
2,024 - 2,026
CO2 Efficiency Class
F, B
CO2 Efficiency Class
G
Brand
BMW
Brand
Porsche
What drive types are available for the BMW 7 Series?

Available configurations include 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.