Costs & verdict
Everyday costs, plus how reliable and safe it is
Costs, insurance groups, MPG and CO2
It wears the Porsche badge on its snout so, naturally, buying a Cayman will require a hefty initial investment (with no discounts available, either), particularly for our favourite GTS model. If your budget doesn't stretch to the GTS, don't worry; the entry-level Cayman is still an excellent driver's car and you can have one for around the same price as the Alpine A110 or Toyota Supra.
Servicing, replacement parts and tyres will all cost a fair bit, too. Real-world fuel economy isn't brilliant, either, with the Cayman 2.0-litre averaging 34.4mpg in our True MPG tests. The Cayman S 2.5-litre hit an average of just 28.4mpg, which isn't great when you think that's similar to the real-world economy you'll get from a carefully driven GTS 4.0-litre.
More positively, the Cayman will hold onto its value well, so the costs stack up surprisingly well against rivals such as the Jaguar F-Type.
Equipment, options and extras
Porsche is notorious for giving away very little standard equipment and this is true with the Cayman. Even the range-topping GTS model lacks the kind of kit you might expect as standard on a car costing such a serious wedge; you'll need to pay extra if you want keyless entry, power-folding door mirrors and even cruise control.
So what do you get? Well, the standard Cayman comes with electric windows, air-con, 18in alloy wheels, xenon headlights, and part-Alcantara heated seats. The good news is you don't need to add any options, such as PASM adaptive dampers or the limited-slip differential, to make it drive brilliantly; it's great as it comes.
The Cayman S adds 19in wheels, while the GTS model comes with discreet styling upgrades, 20in wheels, PASM adaptive suspension, a limited-slip differential, sports exhaust and the Sports Chrono Pack.
In the 2020 What Car? Reliability Survey, Porsche finished 22nd (out of 31 brands) in the overall manufacturer league table. That's just ahead of Mercedes, but a long way behind Toyota in third, and BMW in 9th. Worse still, the Cayman was the least reliable sports car in our survey.
Every Cayman comes with a three-year, unlimited-mileage warranty but, like most cars of this type, you can expect it to chew through consumables, such as tyres and brakes – especially if you drive your Cayman hard.
Safety and security
There’s no Euro NCAP crash data available on the Cayman, but all versions come with six airbags and the option of blindspot monitoring and speed-limit recognition. You'll also have to pay extra to add Isofix fittings to the passenger seat. It's also very disappointing that the Cayman isn't available with automatic emergency braking or lane assistance, and you have to pay extra for blind spot monitoring and traffic sign recognition.
Security experts Thatcham Research awarded the Cayman a maximum five-star rating for resisting theft and four stars for withstanding being broken into.
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