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BMW Z4 vs Porsche Cayman comparison
Compare performance (340 HP vs 500 HP), boot space and price (43,500 £ vs 136,000 £ ) at a glance. Find out which car is the better choice for you – BMW Z4 or Porsche Cayman?
BMW Z4 vs Porsche Cayman: Key differences
All details on performance, efficiency, range and trunk space can be found in the technical comparison below – including user reviews for both models.
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 is substantially cheaper – starting at 43,500 £ , while the Porsche Cayman costs 136,000 £ . That’s a price difference of around 92,571 £.
Fuel consumption also shows a difference: the BMW Z4 uses 6.9 L/100km and is substantially more efficient than the Porsche Cayman with 13 L/100km. The difference is about 6.1 L/100km.
Cayman
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 Cayman offers noticeably more power – delivering 500 HP compared to 340 HP. That’s roughly 160 HP more horsepower.
When accelerating from 0 to 100 km/h, the Porsche Cayman is markedly quicker – completing the sprint in 3.4 s, while the BMW Z4 takes 4.5 s. That’s about 1.1 s quicker.
There’s also a difference in torque: the BMW Z4 delivers only slightly more torque with 500 Nm compared to 450 Nm. That’s about 50 Nm more.
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.
Both vehicles offer seating for 2 people.
In terms of curb weight, Porsche Cayman is marginally lighter – 1,490 kg compared to 1,510 kg. The difference is around 20 kg.
Looking at boot space, the BMW Z4 offers clearly more boot space – 281 L compared to 184 L. That’s a difference of about 97 L.
When it comes to payload, the Porsche Cayman carries somewhat more – 281 kg compared to 235 kg. That’s a difference of about 46 kg.
Who wins the race in the data check?
The BMW Z4 stands well ahead of its rival 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 £43,500
BMW Z4
BMW Z4
Porsche Cayman
Costs and Consumption
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View detailed analysis
Engine and Performance
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Dimensions and Body
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View detailed analysis
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.
details
Porsche Cayman
The Porsche Cayman stands out as a quintessential sports car, blending sleek design with dynamic handling. Its mid-engine layout provides an excellent balance and sharp agility that driving enthusiasts crave. Inside, the Cayman offers a refined and driver-focused interior, ensuring that every journey is an exhilarating experience.
details
BMW Z4
Porsche Cayman
Costs and Consumption |
|
|---|---|
|
Price
43,500 - 65,300 £
|
Price
136,000 £
|
|
Consumption L/100km
6.9 - 8.5 L/100km
|
Consumption L/100km
13 L/100km
|
|
Consumption kWh/100km
-
|
Consumption kWh/100km
-
|
|
Electric Range
-
|
Electric Range
-
|
|
Battery Capacity
-
|
Battery Capacity
-
|
|
co2
157 - 191 g/km
|
co2
295 g/km
|
|
Fuel tank capacity
-
|
Fuel tank capacity
54 L
|
Dimensions and Body |
|
|---|---|
|
Body Type
Roadster
|
Body Type
Coupe
|
|
Seats
2
|
Seats
2
|
|
Doors
-
|
Doors
2
|
|
Curb weight
1,510 - 1,640 kg
|
Curb weight
1,490 kg
|
|
Trunk capacity
281 L
|
Trunk capacity
184 L
|
|
Length
-
|
Length
4,456 mm
|
|
Width
1,864 mm
|
Width
1,822 mm
|
|
Height
-
|
Height
1,267 mm
|
|
Max trunk capacity
-
|
Max trunk capacity
272 L
|
|
Payload
215 - 235 kg
|
Payload
281 kg
|
Engine and Performance |
|
|---|---|
|
Engine Type
Petrol
|
Engine Type
Petrol
|
|
Transmission
Manuel, Automatic
|
Transmission
Automatic
|
|
Transmission Detail
Manual Gearbox, Automatic Gearbox
|
Transmission Detail
Dual-Clutch Automatic
|
|
Drive Type
Rear-Wheel Drive
|
Drive Type
Rear-Wheel Drive
|
|
Power HP
197 - 340 HP
|
Power HP
500 HP
|
|
Acceleration 0-100km/h
4.5 - 6.8 s
|
Acceleration 0-100km/h
3.4 s
|
|
Max Speed
-
|
Max Speed
315 km/h
|
|
Torque
320 - 500 Nm
|
Torque
450 Nm
|
|
Number of Cylinders
4 - 6
|
Number of Cylinders
6
|
|
Power kW
145 - 250 kW
|
Power kW
368 kW
|
|
Engine capacity
1,998 - 2,998 cm3
|
Engine capacity
3,996 cm3
|
General |
|
|---|---|
|
Model Year
2,025 - 2,026
|
Model Year
2021
|
|
CO2 Efficiency Class
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.