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BMW 4 Series Gran Coupe vs Porsche 911 Convertible comparison
Compare performance (392 HP vs 711 HP), boot space and price (46,200 £ vs 138,000 £ ) at a glance. Find out which car is the better choice for you – BMW 4 Series Gran Coupe or Porsche 911 Convertible?
BMW 4 Series Gran Coupe vs Porsche 911 Convertible: Key differences
4 Series Gran Coupe
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 Gran Coupe is significantly cheaper – starting at 46,200 £ , while the Porsche 911 Convertible costs 138,000 £ . That’s a price difference of around 91,800 £.
Fuel consumption also shows a difference: the BMW 4 Series Gran Coupe uses 5 L/100km and is significantly more efficient than the Porsche 911 Convertible with 10.5 L/100km. The difference is about 5.5 L/100km.
911 Convertible
Engine and Performance:
Power, torque and acceleration say a lot about how a car feels on the road. This is where you see which model delivers more driving dynamics.
When it comes to engine power, the Porsche 911 Convertible offers clearly more power – delivering 711 HP compared to 392 HP. That’s roughly 319 HP more horsepower.
When accelerating from 0 to 100 km/h, the Porsche 911 Convertible is clearly quicker – completing the sprint in 2.6 s, while the BMW 4 Series Gran Coupe takes 4.6 s. That’s about 2 s quicker.
There’s also a difference in torque: the Porsche 911 Convertible delivers somewhat more torque with 800 Nm compared to 650 Nm. That’s about 150 Nm more.
4 Series Gran Coupe
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 4 Series Gran Coupe offers more seats – 5 vs 4.
In terms of curb weight, Porsche 911 Convertible is only slightly lighter – 1,572 kg compared to 1,695 kg. The difference is around 123 kg.
Looking at boot space, the BMW 4 Series Gran Coupe offers clearly more boot space – 470 L compared to 373 L. That’s a difference of about 97 L.
When it comes to payload, the BMW 4 Series Gran Coupe carries noticeably more – 480 kg compared to 345 kg. That’s a difference of about 135 kg.
Who wins the race in the data check?
The BMW 4 Series Gran Coupe 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 £46,200
BMW 4 Series Gran Coupe
BMW 4 Series Gran Coupe
Porsche 911 Convertible
Costs and Consumption
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Engine and Performance
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Dimensions and Body
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BMW 4 Series Gran Coupe
The BMW 4 Series Gran Coupe marries coupe-like drama with hatchback practicality, offering a sloping roofline that still lets you load bags without a wrestling match. It steers with familiar BMW poise, so buyers after sporty looks and everyday usability get the best of both worlds—and a car that makes the commute feel a bit more glamorous.
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 4 Series Gran Coupe
Porsche 911 Convertible
Costs and Consumption |
|
|---|---|
|
Price
46,200 - 68,800 £
|
Price
138,000 - 244,500 £
|
|
Consumption L/100km
5 - 7.8 L/100km
|
Consumption L/100km
10.5 - 13.7 L/100km
|
|
Consumption kWh/100km
-
|
Consumption kWh/100km
-
|
|
Electric Range
-
|
Electric Range
-
|
|
Battery Capacity
-
|
Battery Capacity
-
|
|
co2
131 - 179 g/km
|
co2
237 - 310 g/km
|
|
Fuel tank capacity
-
|
Fuel tank capacity
-
|
Dimensions and Body |
|
|---|---|
|
Body Type
Hatchback
|
Body Type
Convertible
|
|
Seats
5
|
Seats
2 - 4
|
|
Doors
-
|
Doors
-
|
|
Curb weight
1,695 - 1,935 kg
|
Curb weight
1,572 - 1,900 kg
|
|
Trunk capacity
470 L
|
Trunk capacity
163 - 373 L
|
|
Length
-
|
Length
-
|
|
Width
1,852 mm
|
Width
1,852 - 1,900 mm
|
|
Height
-
|
Height
-
|
|
Max trunk capacity
-
|
Max trunk capacity
-
|
|
Payload
480 kg
|
Payload
195 - 345 kg
|
Engine and Performance |
|
|---|---|
|
Engine Type
Diesel MHEV, Petrol, Petrol MHEV
|
Engine Type
Petrol, Full Hybrid
|
|
Transmission
Automatic
|
Transmission
Manuel, Automatic
|
|
Transmission Detail
Automatic Gearbox
|
Transmission Detail
Manual Gearbox, Dual-Clutch Automatic
|
|
Drive Type
All-Wheel Drive, Rear-Wheel Drive
|
Drive Type
Rear-Wheel Drive, All-Wheel Drive
|
|
Power HP
184 - 392 HP
|
Power HP
394 - 711 HP
|
|
Acceleration 0-100km/h
4.6 - 7.9 s
|
Acceleration 0-100km/h
2.6 - 4.7 s
|
|
Max Speed
-
|
Max Speed
-
|
|
Torque
300 - 650 Nm
|
Torque
450 - 800 Nm
|
|
Number of Cylinders
4 - 6
|
Number of Cylinders
6
|
|
Power kW
135 - 288 kW
|
Power kW
290 - 523 kW
|
|
Engine capacity
1,995 - 2,998 cm3
|
Engine capacity
2,981 - 3,996 cm3
|
General |
|
|---|---|
|
Model Year
2,024 - 2,025
|
Model Year
2,024 - 2,026
|
|
CO2 Efficiency Class
E, D, F, G
|
CO2 Efficiency Class
G
|
|
Brand
BMW
|
Brand
Porsche
|
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.