The 718 Cayman GTS 4.0 exists in Porsche's lineup as an argument that has a defined expiration date. The naturally aspirated 4.0-liter flat-six is shared with the GT4 but detuned to 394 horsepower. The mid-engine layout, the chassis tuning, the six-speed manual transmission option - all of these are elements of a sports car philosophy that Porsche has stated will migrate toward electrification. The GTS 4.0 is not the last Cayman, but it may be the last naturally aspirated Cayman in this configuration.
Driving it with that context is either romantic or annoying depending on your tolerance for automotive nostalgia. What's unambiguous is the driving experience it delivers.
The flat-six's character above 5,000 rpm is the defining experience. The engine builds power with a linearity and an accompanying sound that turbocharged alternatives in the same power class cannot replicate. The relationship between throttle position, engine sound, and power delivery feels like a direct mechanical connection rather than a managed electronic interpretation. Redline arrives at 8,000 rpm, and the GTS rewards running toward it in a way that requires no amplification, no drama, and no apology.
The chassis balance reflects Porsche's decades of mid-engine development. The GTS sits lower and wider than the standard Cayman, with sport suspension reducing ride height by 30mm. Cornering is precise and progressive in a way that reveals the car's capability incrementally rather than suddenly - an engineering achievement that makes the GTS genuinely accessible to skilled drivers while remaining forgiving enough to build confidence in drivers developing their skills.
Steering is the area where the GTS earns its premium over alternatives. The weighting builds naturally with speed and cornering load, the center feel is consistent, and the communication about road texture and limit approach is clearer than any other current production sports car at this price point.
The six-speed manual is the correct gearbox for the GTS. The seven-speed PDK dual-clutch is faster by every measurable metric. It is also a step removed from the experience the car is designed to deliver. The manual's precision, the engagement of heel-toe downshifts, and the driver involvement it requires are integral to the GTS's character.
Summary
What it is: The Porsche 718 Cayman GTS 4.0, a 394-horsepower mid-engine sports coupe powered by a naturally aspirated flat-six, available with six-speed manual or seven-speed PDK.
Best for: Driving enthusiasts who want the purest current expression of Porsche's sports car engineering before the electrification transition changes it fundamentally.
Biggest cost/risk factor: Premium pricing relative to competitors; the GTS case is experiential rather than specification-based, which requires experiencing it to evaluate.
When to act: The naturally aspirated era has a defined horizon - buyers who want this specific configuration should act within the current model cycle.
AutosAdvisor is not a licensed dealer. Review reflects editorial testing.
