@ BMW Group Press
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BMW Z4 vs Porsche 911 Convertible – Which car suits you better?

Everyday use, family trips or long-distance drives – here’s where the differences show.
Discover whether BMW Z4 or Porsche 911 Convertible fits your lifestyle better.

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

Z4 @ BMW Group Press

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 Z4 has a clearly advantage in terms of price – it starts at 43500 £, while the Porsche 911 Convertible costs 122400 £. That’s a price difference of around 78943 £.

Fuel consumption also shows a difference: BMW Z4 manages with 6.90 L and is therefore clearly more efficient than the Porsche 911 Convertible with 10.30 L. The difference is about 3.40 L per 100 km.

Z4 @ BMW Group Press

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 decisively edge – offering 711 HP compared to 340 HP. That’s roughly 371 HP more horsepower.

In acceleration from 0 to 100 km/h, the Porsche 911 Convertible is significantly quicker – completing the sprint in 2.60 s, while the BMW Z4 takes 4.50 s. That’s about 1.90 s faster.

In terms of top speed, the Porsche 911 Convertible performs clearly perceptible better – reaching 322 km/h, while the BMW Z4 tops out at 250 km/h. The difference is around 72 km/h.

There’s also a difference in torque: Porsche 911 Convertible pulls clearly perceptible stronger with 800 Nm compared to 500 Nm. That’s about 300 Nm difference.

Z4 @ BMW Group Press

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: Porsche 911 Convertible offers significantly more seating capacity – 4 vs 2.

In curb weight, BMW Z4 is slight lighter – 1510 kg compared to 1655 kg. The difference is around 145 kg.

In terms of boot space, the BMW Z4 offers clearly more room – 281 L compared to 163 L. That’s a difference of about 118 L.

When it comes to payload, Porsche 911 Convertible evident takes the win – 345 kg compared to 235 kg. That’s a difference of about 110 kg.

Who comes out on top?

Overall, the Porsche 911 Convertible shows itself to be wins by a narrow margin and secures the title of DriveDuel Champion.
It convinces with the more balanced overall package and proves to be the more versatile choice for everyday use.

from about £122,400
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Porsche 911 Convertible

  • Engine Type : Petrol, Full Hybrid
  • Transmission : Automatic, Manuel
  • Drive Type : Rear-Wheel Drive, All-Wheel Drive
  • Power HP : 394 - 711 HP
  • Consumption L/100km : 10.3 - 11.7 L
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BMW Z4

The BMW Z4 is an elegant roadster that combines dynamic performance with a sleek design. Its stylish exterior features bold lines and a retractable soft top, offering an exhilarating open-air driving experience. Inside, the Z4 is equipped with a luxurious cabin filled with premium materials and cutting-edge technology, ensuring both comfort and connectivity on every journey.

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P90479448_highRes_bmw-z4-m40i-09-2022 @ BMW Group Press
P90479454_highRes_bmw-z4-m40i-09-2022 @ BMW Group Press
P90479457_highRes_bmw-z4-m40i-09-2022 @ BMW Group Press
P90479470_highRes_bmw-z4-m40i-09-2022 @ BMW Group Press
P90479471_highRes_bmw-z4-m40i-09-2022 @ BMW Group Press

Porsche 911 Convertible

The Porsche 911 Cabrio is a stunning blend of timeless design and exhilarating performance. With its sleek lines and convertible roof, this model seamlessly combines the thrill of open-air driving with the precision and heritage of the Porsche brand. The interior exudes luxury, providing both driver and passenger with an unmatched sense of elegance and comfort.

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Costs and Consumption
Price
43500 - 65300 £
Price
122400 - 244500 £
Consumption L/100km
6.9 - 8.5 L
Consumption L/100km
10.3 - 11.7 L
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
157 - 191 g/km
co2
234 - 265 g/km
Fuel tank capacity
52 L
Fuel tank capacity
63 L

Dimensions and Body
Body Type
Roadster
Body Type
Convertible
Seats
2
Seats
4
Doors
2
Doors
2
Curb weight
1510 - 1640 kg
Curb weight
1655 - 1900 kg
Trunk capacity
281 L
Trunk capacity
163 L
Length
4324 mm
Length
4542 - 4553 mm
Width
1864 mm
Width
1852 - 1900 mm
Height
1303 - 1304 mm
Height
1292 - 1302 mm
Max trunk capacity
-
Max trunk capacity
-
Payload
215 - 235 kg
Payload
275 - 345 kg

Engine and Performance
Engine Type
Petrol
Engine Type
Petrol, Full Hybrid
Transmission
Manuel, Automatic
Transmission
Automatic, Manuel
Transmission Detail
Manual Gearbox, Automatic Gearbox
Transmission Detail
Dual-Clutch Automatic, Manual Gearbox
Drive Type
Rear-Wheel Drive
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Power HP
197 - 340 HP
Power HP
394 - 711 HP
Acceleration 0-100km/h
4.5 - 6.8 s
Acceleration 0-100km/h
2.6 - 4.7 s
Max Speed
240 - 250 km/h
Max Speed
291 - 322 km/h
Torque
320 - 500 Nm
Torque
450 - 800 Nm
Number of Cylinders
4 - 6
Number of Cylinders
6
Power kW
145 - 250 kW
Power kW
290 - 523 kW
Engine capacity
1998 - 2998 cm3
Engine capacity
2981 - 3591 cm3

General
Model Year
2024
Model Year
2024 - 2026
CO2 Efficiency Class
F, G
CO2 Efficiency Class
G
Brand
BMW
Brand
Porsche

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What drive types are available for the BMW Z4?

The BMW Z4 is offered with Rear-Wheel Drive.

The prices and data displayed are estimates based on German list prices and may vary by country. This information is not legally binding.