VS

BMW Z4 vs Porsche Cayman comparison

Compare performance (340 HP vs 500 HP), boot space and price (43500 £ vs 136000 £ ) 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

BMW Z4

  • significantly cheaper
  • clearly more efficient
  • clearly perceptible more trunk space

Porsche Cayman

  • clearly perceptible more power
  • noticeable quicker from 0–100 km/h
  • barely noticeable lighter

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

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 significantly advantage in terms of price – it starts at 43500 £ , while the Porsche Cayman costs 136000 £ . That’s a price difference of around 92571 £.

Fuel consumption also shows a difference: BMW Z4 manages with 6.90 L and is therefore clearly more efficient than the Porsche Cayman with 13 L. The difference is about 6.10 L per 100 km.

Cayman

Engine and Performance:

Power, torque and acceleration are the classic benchmarks for car enthusiasts – and here, some clear differences start to show.

When it comes to engine power, the Porsche Cayman has a clearly perceptible edge – offering 500 HP compared to 340 HP. That’s roughly 160 HP more horsepower.

In acceleration from 0 to 100 km/h, the Porsche Cayman is noticeable quicker – completing the sprint in 3.40 s, while the BMW Z4 takes 4.50 s. That’s about 1.10 s faster.

There’s also a difference in torque: BMW Z4 pulls hardly perceptible stronger with 500 Nm compared to 450 Nm. That’s about 50 Nm difference.

Z4

Space and Everyday Use:

Cabin size, boot volume and payload all play a role in everyday practicality. Here, comfort and flexibility make the difference.

Both vehicles offer seating for 2 people.

In curb weight, Porsche Cayman is barely noticeable lighter – 1490 kg compared to 1510 kg. The difference is around 20 kg.

In terms of boot space, the BMW Z4 offers clearly perceptible more room – 281 L compared to 184 L. That’s a difference of about 97 L.

When it comes to payload, Porsche Cayman somewhat takes the win – 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 sits 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.

Frequently compared as well

BMW Z4
Mercedes SL Class
VS
BMW Z4 and Mercedes SL Class go head-to-head: compare performance, space, features and price in one quick overview to see which model suits your daily driving, budget and lifestyle better. A clear, side-by-side look helps you make the smarter choice.
BMW 4 Series Convertible
BMW Z4
VS
When it comes to choosing between the BMW 4 Series Convertible and the BMW Z4, enthusiasts are presented with two distinctly appealing options. The 4 Series Convertible offers a blend of luxury and practicality, making it an ideal choice for those who seek a spacious interior without compromising …
BMW Z4
Porsche Cayman

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis
from about £43,500
Z4

BMW Z4

  • Engine Type : Petrol
  • Transmission : Manuel, Automatic
  • Drive Type : Rear-Wheel Drive
  • Power HP : 197 - 340 HP
  • Consumption L/100km : 6.9 - 8.5 L
details

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
P90479448_highRes_bmw-z4-m40i-09-2022
P90479454_highRes_bmw-z4-m40i-09-2022
P90479457_highRes_bmw-z4-m40i-09-2022
P90479470_highRes_bmw-z4-m40i-09-2022
P90479471_highRes_bmw-z4-m40i-09-2022

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
serpimg_F8cdKb

Reviews BMW Z4

Reviews Porsche Cayman

BMW Z4
Porsche Cayman

Costs and Consumption
Price
43500 - 65300 £
Price
136000 £
Consumption L/100km
6.9 - 8.5 L
Consumption L/100km
13 L
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
1510 - 1640 kg
Curb weight
1490 kg
Trunk capacity
281 L
Trunk capacity
184 L
Length
-
Length
4456 mm
Width
1864 mm
Width
1822 mm
Height
-
Height
1267 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
3.40 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
1998 - 2998 cm3
Engine capacity
3996 cm3

General
Model Year
2025 - 2026
Model Year
2021
CO2 Efficiency Class
F, G
CO2 Efficiency Class
G
Brand
BMW
Brand
Porsche

Similar Comparisons

Toyota Supra
Porsche Cayman
VS
The Toyota Supra and Porsche Cayman compete for the top spot in your garage. See how both models differ in key areas like performance, running costs, interior space and technology. A fast, clear comparison helps you pick the one that fits your needs best.
Porsche Macan
Porsche Cayman
VS
The Porsche Macan and Porsche Cayman compete for the top spot in your garage. See how both models differ in key areas like performance, running costs, interior space and technology. A fast, clear comparison helps you pick the one that fits your needs best.
Alpine A110
Porsche Cayman
VS
The Alpine A110 and Porsche Cayman compete for the top spot in your garage. See how both models differ in key areas like performance, running costs, interior space and technology. A fast, clear comparison helps you pick the one that fits your needs best.
BMW 2 Series
BMW Z4
VS
Unsure whether the BMW 2 Series or the BMW Z4 is the better match? Compare both models directly and discover differences in power, efficiency, comfort and value for money — all summarized in one easy view to support your decision.
BMW 4 Series Coupe
BMW Z4
VS
BMW 4 Series Coupe and BMW Z4 go head-to-head: compare performance, space, features and price in one quick overview to see which model suits your daily driving, budget and lifestyle better. A clear, side-by-side look helps you make the smarter choice.
Lotus Emira
Porsche Cayman
VS
Lotus Emira and Porsche Cayman go head-to-head: compare performance, space, features and price in one quick overview to see which model suits your daily driving, budget and lifestyle better. A clear, side-by-side look helps you make the smarter choice.
Porsche Panamera
Porsche Cayman
VS
Unsure whether the Porsche Panamera or the Porsche Cayman is the better match? Compare both models directly and discover differences in power, efficiency, comfort and value for money — all summarized in one easy view to support your decision.
Porsche Taycan
Porsche Cayman
VS
Unsure whether the Porsche Taycan or the Porsche Cayman is the better match? Compare both models directly and discover differences in power, efficiency, comfort and value for money — all summarized in one easy view to support your decision.
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.