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Porsche 911 Convertible vs Rolls-Royce Ghost comparison

Compare performance (711 HP vs 600 HP), boot space and price (138,000 £ vs 276,900 £ ) at a glance. Find out which car is the better choice for you – Porsche 911 Convertible or Rolls-Royce Ghost?

Porsche 911 Convertible vs Rolls-Royce Ghost: Key differences

Porsche 911 Convertible

  • significantly cheaper
  • somewhat more power
  • significantly more efficient
  • substantially quicker 0–100 km/h
  • clearly lighter
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Rolls-Royce Ghost

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By Achim Sedelmaier

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

911 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.

Porsche 911 Convertible is significantly cheaper – starting at 138,000 £ , while the Rolls-Royce Ghost costs 276,900 £ . That’s a price difference of around 138,857 £.

Fuel consumption also shows a difference: the Porsche 911 Convertible uses 10.5 L/100km and is significantly more efficient than the Rolls-Royce Ghost with 15.3 L/100km. The difference is about 4.8 L/100km.

Ghost

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 somewhat more power – delivering 711 HP compared to 600 HP. That’s roughly 111 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 Rolls-Royce Ghost takes 4.7 s. That’s about 2.1 s quicker.

There’s also a difference in torque: the Rolls-Royce Ghost delivers somewhat more torque with 900 Nm compared to 800 Nm. That’s about 100 Nm more.

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: Rolls-Royce Ghost offers more seats – 5 vs 4.

In terms of curb weight, Porsche 911 Convertible is clearly lighter – 1,572 kg compared to 2,490 kg. The difference is around 918 kg.

Who wins the race in the data check?

The Porsche 911 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 £138,000
911 Convertible

Porsche 911 Convertible

  • Engine Type Petrol, Full Hybrid
  • Transmission Manuel, Automatic
  • Drive Type Rear-Wheel Drive, All-Wheel Drive
  • Power HP 394 - 711 HP
  • Consumption L/100km 10.5 - 13.7 L/100km
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Frequently compared as well

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Porsche 911 Convertible
Rolls-Royce Ghost

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

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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Rolls-Royce Ghost

The Ghost is a stunning representation of luxury and sophistication, embodying the essence of Rolls-Royce's craftsmanship. With its serene ride and opulent interior, it offers an unparalleled driving experience that envelops occupants in a world of comfort. Every detail, from the meticulously designed dashboard to the whisper-quiet engine, reflects the brand's commitment to excellence and elegance.

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Reviews Rolls-Royce Ghost

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Porsche 911 Convertible
Rolls-Royce Ghost

Costs and Consumption
Price
138,000 - 244,500 £
Price
276,900 - 334,100 £
Consumption L/100km
10.5 - 13.7 L/100km
Consumption L/100km
15.3 - 15.7 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
237 - 310 g/km
co2
346 - 357 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Convertible
Body Type
Sedan
Seats
2 - 4
Seats
5
Doors
-
Doors
-
Curb weight
1,572 - 1,900 kg
Curb weight
2,490 - 2,530 kg
Trunk capacity
163 - 373 L
Trunk capacity
-
Length
-
Length
-
Width
1,852 - 1,900 mm
Width
2,148 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
195 - 345 kg
Payload
-

Engine and Performance
Engine Type
Petrol, Full Hybrid
Engine Type
Petrol MHEV
Transmission
Manuel, Automatic
Transmission
Automatic
Transmission Detail
Manual Gearbox, Dual-Clutch Automatic
Transmission Detail
Automatic Gearbox
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Drive Type
All-Wheel Drive
Power HP
394 - 711 HP
Power HP
571 - 600 HP
Acceleration 0-100km/h
2.6 - 4.7 s
Acceleration 0-100km/h
4.7 - 4.8 s
Max Speed
-
Max Speed
-
Torque
450 - 800 Nm
Torque
850 - 900 Nm
Number of Cylinders
6
Number of Cylinders
12
Power kW
290 - 523 kW
Power kW
420 - 441 kW
Engine capacity
2,981 - 3,996 cm3
Engine capacity
6,749 cm3

General
Model Year
2,024 - 2,026
Model Year
2024
CO2 Efficiency Class
G
CO2 Efficiency Class
G
Brand
Porsche
Brand
Rolls-Royce
What drivetrain options does the Porsche 911 Convertible have?

The Porsche 911 Convertible is offered with 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.