Test drive, Porsche Cayman GT4 | Porsche
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July 28, 2015

Test drive, Porsche Cayman GT4 | Porsche


Porsche Cayman GT4 | Porsche Cayman GT4


Test Drive: Porsche Cayman GT4


GT3” and “GT2,” the traditional names for the most hardcore variants within the “911” series, have now been applied to the “Cayman” for the first time. Equipped with the same 3.8-liter flat-six engine as the “911 Carrera S” and offered exclusively with a manual transmission, the “Cayman GT4” promises an exceptional driving experience. Yasuhiko Kawamura reports from Portugal, the westernmost point of the Eurasian continent.

Text by KAWAMURA Yasuhiko




“Unleashed” in the Mid-Engine Range


The Entry-Level GT ModelIn a specially prepared space, a clean renovation of what would normally be a paddock filled with the scent of oil and tires, an engineer from the development team described this model’s character at the international press launch held in Portugal, a circuit-focused event. He began by stating that the car is primarily intended for circuit use.

Incidentally, the “GT” referred to here, similar to the “GTI” in Volkswagen vehicles, excludes the “GTS” designation, which Porsche has recently been branding across its model range, emphasizing not only sportiness but also daily usability and comfort.




Instead, it refers to the exceptionally sporty and hardcore “special edition models” that have traditionally been offered within the “911” series, such as the “GT3” and “GT2.” Extending these to the mid-engine range and achieving a price point significantly lower than the aforementioned 911 GT variants is likely a key point highlighted by the introductory phrase.

The “Cayman GT4,” unveiled at the Geneva Motor Show this spring as the pinnacle of the series, is noteworthy not only for its hardware – a more powerful engine combined with a sportier chassis setup – but also, arguably, for the “unleashing” of a high-performance version in the mid-engine range that could potentially rival its “big brother, the 911.” This marketing aspect is also considered a significant point.



Porsche Cayman GT4 | Porsche Cayman GT4


Test Drive: Porsche Cayman GT4 (2)



“Unleashed” in the Mid-Engine Range


For those who know cars, the GT4's distinct performance, setting it apart from previous Cayman lineups, is immediately apparent from its stance.

The chassis and suspension, developed by the motorsport division at the Weissach facility, similar to the “911 GT3,” utilize many components from the GT3 and are set 30mm lower than the original Cayman. The car rides on 20-inch wheels with notably wide tires – 245mm at the front and 295mm at the rear – giving it a substantial presence.




Further defining its hardcore image are the dedicated aerodynamic parts designed to enhance cooling and downforce. The low front lip spoiler, the fixed rear spoiler supported by aluminum brackets, the air outlets in front of the hood, and the side blades integrated into the intakes behind the doors are the key visual elements that emphasize the model's performance.

For circuit driving, it is possible to achieve greater downforce by removing the inserts covering the diffuser channels for the front axle and adjusting the rear spoiler angle.



Porsche Cayman GT4 | Porsche Cayman GT4


Test Drive: Porsche Cayman GT4 (3)



“Unleashed” in the Mid-Engine Range


The interior, with its belt-type door openers evoking a sense of lightness, uniquely features the “Clubsport Package” for the GT4. This package includes a rear roll cage, a fire extinguisher, and a six-point harness for the driver. Additionally, by equipping the front roll cage supplied by the motorsport division as a competition part, the vehicle meets the regulations for events sanctioned by the German Motorsport Federation.

The “Cayman GT4” is exclusively equipped with a 3.8-liter flat-six engine inherited from the “911 Carrera S,” paired with a six-speed manual transmission. Its maximum output of 385 ps and peak torque of 420 Nm are slightly lower than the Carrera S's figures by 15 ps and 20 Nm, respectively. This is attributed to the reversed engine mounting direction compared to the 911 series, primarily due to exhaust system routing constraints. However, considering Porsche's current strategy, it's also possible that this maintains a sales hierarchy between the 911 and mid-engine models.




The transmission, including its gear ratios, is the same unit used in the existing Cayman S and Cayman GTS grades. However, reinforcements have been made to the engine connection flange to accommodate the increased power.

The firmer and heavier feel of the shifter is likely due to the “20mm shorter shift lever.” While the 911 GT3, prioritizing absolute speed, is exclusively offered with PDK, the Cayman GT4's manual-only configuration is explained by the development team as a result of “insufficient manpower for simultaneous development of a corresponding PDK.”








However, this implies that the current 0-100 km/h acceleration time of 4.4 seconds and a Nürburgring lap time of 7 minutes 40 seconds on the old course could potentially be improved with a PDK version. For comparison, the 911 Carrera S Coupe achieves 0-100 km/h in 4.5 seconds with the 7-speed manual and 4.3 seconds with PDK.

The Nürburgring lap time of 7 minutes 40 seconds was announced with the car equipped with the full "driving options." If a PDK version of the Cayman GT4 were to appear, it is highly likely that it would achieve a "downward conquest" in terms of performance.





Porsche Cayman GT4 | Porsche Cayman GT4


Test Drive: Porsche Cayman GT4 (4)



“Unleashed” in the Mid-Engine Range


As mentioned, selecting first gear with the shifter, which requires slightly more effort than on the Cayman S/GTS, and then smoothly engaging the clutch, which feels unchanged from the existing models, allows the beautifully sculpted coupe body to accelerate with impressive force. This is as expected from the specifications, combining a more powerful engine with a weight that differs by only about 20kg from the S/GTS grades.

Interestingly, the sound reaching the ears from behind is more subdued than the GTS's deliberately dramatic presentation, and it possesses a subtle difference from the "911 Carrera S" source, sounding distinctly like a "Cayman's sound." This might be due to the reversed mounting direction of the engine compared to the 911, altering the noise sources closer to the driver's ears.




The acceleration delivered by the 3.8-liter unit is, of course, immensely powerful. It also exhibits a characteristic of high-revving, high-output performance, smoothly extending to the 7,600rpm redline. However, a subtle desire for "a bit more sharpness as the revs climb" also emerges, perhaps because we inevitably compare it to the heart of the 911 GT3?This is where the difference is felt, stemming from the use of a "mass-produced type" unit directly installed, as opposed to the GT3's engine, which underwent dedicated development by the motorsport division. Of course, we understand intellectually that "this is precisely why the GT4 achieves its reasonable price,"

.




On the other hand, the handling on the circuit is, without exaggeration, "absolutely delightful." The Cayman, with its high body rigidity, already offers precise handling and reliable stability, which are its strong points even in the original model.

Leveraging this inherent excellence, the suspension, which feels even more precise in its positioning, does not falter under the significant inputs from the wide, high-grip tires. Combined with the larger brakes, also inherited from the "911 GT3," the result is a setup that truly delivers "circuit suitability comparable to the GT3."



Porsche Cayman GT4 | Porsche Cayman GT4


Test Drive: Porsche Cayman GT4 (5)



“Unleashed” in the Mid-Engine Range


For users who anticipate frequent track use, the optional ceramic composite brakes (PCCB) are highly recommended. While the standard system, featuring larger front/6-piston and rear/4-piston aluminum monobloc calipers, is already more heavy-duty than that of the S/GTS grades, the PCCB-equipped car demonstrated clearly superior braking power and durability.

When driving the GT4 on public roads, it quickly becomes apparent that its ride is the firmest in the series. The lowered front spoiler, extending forward, significantly restricts the approach angle, leading to frequent concerns about scraping. For users who prioritize daily city driving over circuit performance, the GTS grade is a stronger recommendation, also due to its superior agility, characteristic of a mid-engine model.




Conversely, for pure sports enthusiasts who are drawn to the high-speed performance on the circuit, the GT4's ride, despite transmitting some vertical G-forces, is not perceived as uncomfortable. Vibrations are quickly damped, and the dry, direct feel of the ride is entirely manageable.

The Cayman GT4, with its sporty ride resulting from a focus on performance and the sheer enjoyment of operating a manual transmission – a feature lost even from the 911 GT3 – is sure to capture the interest of 911 fans who have long believed that "Porsche is, after all, RR."

080507_eac_spec
Porsche Cayman GT4 | Porsche Cayman GT4
Body Dimensions | Length 4,438 × Width 1,817 × Height 1,266 mm
Wheelbase | 2,484 mm
Engine | 3,799 cc Horizontally opposed 6-cylinder DOHC
Max. Output | 283 kW (385 ps) / 7,400 rpm
Max. Torque | 420 Nm / 4,750-6,000 rpm
Transmission | 6-speed Manual
Drivetrain | MR
0-100 km/h Acceleration | 4.4 seconds
0-200 km/h Acceleration | 14.5 seconds
80-120 km/h Acceleration | 5.5 seconds (5th gear)
Top Speed | 295 km/h
Fuel Consumption (NEDC) | 10.3 ℓ/100km (approx. 9.7 km/ℓ)
Steering | Right / Left
Trunk Capacity | (Front) 150 liters / (Rear) 275 liters
Price | ¥10,640,000




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