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BMW 4 Series Coupe vs Porsche 911 Convertible comparison

Compare performance (530 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 Coupe or Porsche 911 Convertible?

BMW 4 Series Coupe vs Porsche 911 Convertible: Key differences

BMW 4 Series Coupe

5 (1 Reviews)
rate
  • considerably cheaper
  • considerably more efficient
  • moderately more trunk space
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Porsche 911 Convertible

  • noticeably more power
  • markedly quicker 0–100 km/h
  • very slightly lighter
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All details on performance, efficiency, range and trunk space can be found in the technical comparison below – including user reviews for both models.

By Achim Sedelmaier

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

4 Series 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 Coupe is considerably 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 Coupe uses 4.8 L/100km and is considerably more efficient than the Porsche 911 Convertible with 10.5 L/100km. The difference is about 5.7 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 noticeably more power – delivering 711 HP compared to 530 HP. That’s roughly 181 HP more horsepower.

When accelerating from 0 to 100 km/h, the Porsche 911 Convertible is markedly quicker – completing the sprint in 2.6 s, while the BMW 4 Series Coupe takes 3.5 s. That’s about 0.9 s quicker.

There’s also a difference in torque: the Porsche 911 Convertible delivers slightly more torque with 800 Nm compared to 700 Nm. That’s about 100 Nm more.

4 Series Coupe

Space and Everyday Use:

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

Both vehicles offer seating for 4 people.

In terms of curb weight, Porsche 911 Convertible is very slightly lighter – 1,572 kg compared to 1,600 kg. The difference is around 28 kg.

Looking at boot space, the BMW 4 Series Coupe offers moderately more boot space – 440 L compared to 373 L. That’s a difference of about 67 L.

When it comes to payload, the BMW 4 Series Coupe carries a bit more – 415 kg compared to 345 kg. That’s a difference of about 70 kg.

Who wins the race in the data check?

The BMW 4 Series Coupe 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 £46,200
4 Series Coupe

BMW 4 Series Coupe

  • Engine Type Diesel MHEV, Petrol, Petrol MHEV
  • Transmission Automatic, Manuel
  • Drive Type Rear-Wheel Drive, All-Wheel Drive
  • Power HP 184 - 530 HP
  • Consumption L/100km 4.8 - 10 L/100km
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Frequently compared as well

BMW 4 Series Coupe
BMW 4 Series Gran Coupe
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The BMW 4 Series Coupe and BMW 4 Series Gran Coupe look similar but serve different needs: the Coupe delivers a sharper, sportier two-door profile and a more focused driving feel, while the Gran Coupe blends 4 Series styling with four-door practicality and extra interior space. If you prioritise …
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BMW 4 Series Coupe
Porsche 911 Convertible

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

BMW 4 Series Coupe

The BMW 4 Series Coupe blends aggressive styling with a driver-focused cabin, making even the humdrum commute feel like a short track day. It balances sharp handling and grown-up comfort with a dash of theatrical flair, so you get sportscar charisma without the drama of constant sacrifices.

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Reviews BMW 4 Series Coupe

5 (1 Reviews)
rate
Shomguy
20 Jan 2026, 13:24:39

BMW is the best

How do you mainly use this car? (optional): Family car
Safety

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 4 Series Coupe
Porsche 911 Convertible

Costs and Consumption
Price
46,200 - 93,900 £
Price
138,000 - 244,500 £
Consumption L/100km
4.8 - 10 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
126 - 226 g/km
co2
237 - 310 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Coupe
Body Type
Convertible
Seats
4
Seats
2 - 4
Doors
-
Doors
-
Curb weight
1,600 - 1,895 kg
Curb weight
1,572 - 1,900 kg
Trunk capacity
440 L
Trunk capacity
163 - 373 L
Length
-
Length
-
Width
1,852 - 1,887 mm
Width
1,852 - 1,900 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
355 - 415 kg
Payload
195 - 345 kg

Engine and Performance
Engine Type
Diesel MHEV, Petrol, Petrol MHEV
Engine Type
Petrol, Full Hybrid
Transmission
Automatic, Manuel
Transmission
Manuel, Automatic
Transmission Detail
Automatic Gearbox, Manual Gearbox
Transmission Detail
Manual Gearbox, Dual-Clutch Automatic
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Power HP
184 - 530 HP
Power HP
394 - 711 HP
Acceleration 0-100km/h
3.5 - 7.5 s
Acceleration 0-100km/h
2.6 - 4.7 s
Max Speed
-
Max Speed
-
Torque
300 - 700 Nm
Torque
450 - 800 Nm
Number of Cylinders
4 - 6
Number of Cylinders
6
Power kW
135 - 390 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
D, E, F, G
CO2 Efficiency Class
G
Brand
BMW
Brand
Porsche
What drive types are available for the BMW 4 Series Coupe?

Available configurations include 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.