Porsche 718 Cayman GTS review: this or a 911?

Published:07 February 2018

The new 2018 Porsche Cayman GTS: the full CAR magazine review
  • At a glance
  • 5 out of 5
  • 4 out of 5
  • 4 out of 5
  • 5 out of 5
  • 4 out of 5

By Georg Kacher

European editor, secrets uncoverer, futurist, first man behind any wheel

By Georg Kacher

European editor, secrets uncoverer, futurist, first man behind any wheel

 Porsche 718 Cayman GTS review
 Uprated 2.5 flat six, handling tweaks
 Priced from £59,866, on sale now

We are in the mountains high above Malaga, chasing a white 911 GTS convertible. Make that trying to keep up with a white 911 – the man at the wheel is a former racing driver doing his best to remove my new 718 Cayman GTS from his rear-view mirror. 

The fact that he fails is almost exclusively due to the astonishing abilities of the new Cayman, which threatens to topple the big brother hierarchy when pitted against a 911. Obviously it’s beaten on power – its 360bhp engine is 84bhp down on the 911, though makes 25bhp  more than the old Cayman GTS

But that’s not the whole story. The Cayman’s 2.5-litre turbocharged flat four is lighter, more compact and less thirsty that the coveted six. And the entire car is significantly lighter too (1405kg vs the 911’s 1440kg). Add in the Cayman’s well-balanced sports suspension, which lowers the centre of gravity by 20mm compared with the standard model, and the mid-engine layout, and the 911 has a problem. 

Porsche 718 Cayman GTS: the CAR magazine review

In terms of handling, the Cayman has the edge. The weight distribution is not as tail-happy, the cornering grip on warm tyres has that magic touch, the precise steering relays all the road contact you could ever ask for straight to the fingertips, the brakes got me out of a tight spot more than once and the diff lock processes power and torque with minimum fuss and maximum efficiency. 

There is a downside to the extra weight on the front axle, though – through downhill bends, and whenever you overdrive the front tyres, you can expect sudden understeer. Catching it may require a stab at the brakes. 

Which Porsche 718 Cayman should you buy?

But realistically the biggest enemy of the Cayman GTS isn’t the 911, it’s the Cayman S. It costs £8000 less and makes 345bhp, so the difference in absolute performance is negligible. With Sport Plus and launch control activated, the GTS thunders to 62mph from zero in 4.1sec. The S takes only one tenth longer and its top speed of 177mph is only 3mph slower than the GTS’s. 

Is it worth the extra? Our Porsche 718 Cayman S review 

There’s more to this than numbers, of course. The GTS gives better feedback, has sharper responses and finer balance. If you ignore the traditional numbers and instead count the butterflies in your stomach before each drive and your heart-rate on a challenging road, the GTS wins. It’s a more exciting car than the S.

Porsche 718 Cayman GTS: the interior and cabin

Much depends on which drive programme you select via the joy knob on the steering-wheel though. In Normal mode, the ride comfort is okay. In Sport, the drivetrain sharpens up. And in Sport Plus, the entire tech-mech assembly redoubles its efforts.

Left to its own devices in Normal mode, the ECU selects the tallest possible ratio from the PDK dual-clutch gearbox as soon as it can. Trundling along at 1700rpm in seventh gear may save trees, but the engine sounds coarse and unpleasant. In Sport, gearchanges are notably quicker and throttle response is brisker. In previous Porsches, Sport Plus was only good for the racetrack. In the new Cayman GTS, however, the calibration is less extreme and okay for public roads.

Keep the hoof firmly planted in Sport Plus and the master chip will punch the ratios through like an electro-mechanical Rocky Balboa. Even though the engine delivers its peak 360bhp at 6500rpm, there are 1000 more revolutions to play with, and the gearbox uses them all. 

Our review of the basic Porsche 718 Cayman 

Cayman vs 911

It’s a busy rhythm which makes a lot of mostly beautiful noise as it keeps hitting the sweet spot between over-ambitious and under-challenged. When exiting corners, the white 911 still pulls away with vigour but 200 metres later the Cayman gains ground under braking, and it feels a blink quicker through first-gear spirals and second-gear esses. 

While the first three ratios sit relatively close together, the top four gears are set further apart for the sake of fuel economy. Although there is a feisty 317lb ft available from 1900 to 5000rpm, the gearbox needs to be prepped by the driver to make full use of that punch.

The new 718 Cayman GTS is a master in terms of sensory punch, too. Stimulating visual factors include the revised front bumper sporting a bigger air intake, darkened head- and tail lights, twin exhaust pipes framed by a charcoal diffuser, black wheels shod with 20-inch tyres and a couple of prominent air deflectors. 

New Porsche 718 Cayman GTS: specs, prices, review

Inside, we find racing buckets, wall-to-wall alcantara trim, no-cost Sport Chrono clocks and plenty of anodised brightwork. Still absent from the wish list are a head-up display and any but the most basic assistance systems. The most annoying feature is the admittedly improved touchscreen, which on bumpy roads typically needs two or three approaches before the index finger eventually arrives at the target. 

In terms of options, you would not want to be without Porsche’s infotainment system (PCM) and the reversing camera, but there is no real need to spend big on carbon-ceramic brakes or to spend small on the Sports Pack. 

So which Cayman to buy? The 296bhp base model does not deserve its wallflower image. It is attractively priced at £42,897 and is quick enough except perhaps for track outings and particularly furious Sunday mornings. 

Having said that, the 2.0-litre engine is probably better suited to the Boxster. The Cayman S strikes a compelling compromise – it easily wins the value-for-money competition and is the perfect choice for those who don’t appreciate the GTS livery. 


The GT4 returns next spring, but since all my rich aunts and uncles are still fit and well, it unfortunately doesn’t enter the equation. The GTS polarises. It is expensive, it does not have a clear edge on performance, and the top-of-the-line four-cylinder unit is no more refined than the lesser engines. 

On the other hand it looks sexier, has a potentially higher resale value and when everything falls into place – road, traffic, attitude – the 360bhp Cayman easily matches the 444bhp 911 in grins-per-mile. Plus, as the ex-racing driver in the white example ahead is discovering, the GTS’s outright speed can easily embarrass its big brother.

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Price when new: £59,866
On sale in the UK: Now
Engine: 2497cc 16v turbo 4-cyl, 360bhp @ 6500rpm, 317lb ft @ 1900rpm
Transmission: 7-speed dual-clutch auto, rear-wheel drive
Performance: 4.1sec 0-62mph, 180mph, 34.4mpg, 186g/km CO2
Weight / material: 1405kg
Dimensions (length/width/height in mm): 4393/1801/1286mm


Other Models

Photo Gallery

  • The new Porsche 718 Cayman GTS costs £36k less than a 911 GTS
  • GTS's centre of gravity has been lowered by 20mm, which should mean it won't flip over that armco
  • Bucket seats are standard and the Alcantara factory has put on extra shifts. Touchscreen is not great
  • The 718 Cayman GTS is good - but it's not quite as compelling as the GT4...
  • It's turbocharged, but the new Porsche 718 Cayman GTS still revs
  • Subtle it ain't... new bumper sports bigger air intakes, wheels are 20in
  • New Porsche 718 Cayman GTS price: it costs £59,866 in the UK, on sale now

By Georg Kacher

European editor, secrets uncoverer, futurist, first man behind any wheel