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BMW Z4 vs Porsche 911 Convertible - Differences and prices compared
Compare performance (340 HP vs 711 HP), boot space and price (43500 £ vs 122400 £ ) at a glance. Find out which car is the better choice for you – BMW Z4 or Porsche 911 Convertible?
Z4
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
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.
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Z4
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 wins the race in the data check?
The Porsche 911 Convertible comes out modestly 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.
BMW Z4
Porsche 911 Convertible
Costs and Consumption
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Engine and Performance
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Dimensions and Body
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from about £122,400
Porsche 911 Convertible
BMW Z4
The BMW Z4 is a taut, road-hugging roadster that pairs elegant, low-slung styling with a roof you can drop on a sunny whim, delivering that pure, wind-in-your-hair driving thrill few cars manage to match. It’s an ideal weekend companion for drivers who prefer engagement over practicality — bring good shoes rather than a lot of luggage, and you’ll get a grin every time you turn the wheel.
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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.
details
BMW Z4
Porsche 911 Convertible
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 - 2026
|
Model Year
2024 - 2026
|
|
CO2 Efficiency Class
F, G
|
CO2 Efficiency Class
G
|
|
Brand
BMW
|
Brand
Porsche
|
What drive types are available for the BMW Z4?
The BMW Z4 is offered with Rear-Wheel Drive.
The prices shown are estimates based on German list prices, adjusted for local VAT. Local registration taxes (e.g. NoVA, BPM or CO2 malus) are not included. This information is not legally binding.