THERE WAS A TIME when unkind critics suggested the Cayman and Boxster were Porsches for people who couldn’t afford a “real” Porsche (i.e. a 911).
Recent versions of the 718 family have firmly put paid to that idea; these are very desirable and accomplished cars in their own right.
With the latest Spyder and Cayman GT4, Porsche introduces two even more appealing and powerful models to claim top spot in the model series.
Their perfectly balanced mid-engine characteristics will appeal to sports car enthusiasts who delight in driving pleasure and appreciate a high level of agility.
For the first time ever, the 718 Spyder and the 718 Cayman GT4 share a technical base. This includes the newly developed four-litre six-cylinder naturally-aspirated engine, together with a six-speed manual transmission. The boxer engine generates 309kW (420hp) in both models. Whilst the GT4 represents the entry-level GT road model from Porsche, the Spyder lends itself to all kinds of curves. Both rely on highly efficient aerodynamics, a full GT chassis and powerful brakes.
High-revving naturally-aspirated engine
At the heart of both models is the new four-litre six-cylinder boxer engine. The naturally-aspirated engine is based on the same engine family as the turbo engines in the current 911 Carrera model series. The new high-revving engine generates 309kW (420hp) – 35hp more than in the GT4 predecessor models. The third generation of the Spyder also has 45hp more. It delivers a maximum torque of 420Nm at between 5000 and 6800rpm.
The manual transmission sports cars can both break the 300km/h barrier: the Spyder has a top speed of 301km/h, whilst the Cayman GT4 can reach 304km/h. Both models accelerate to 100 km/h in 4.4 seconds from a standing start. Whilst seniordriveraus is quick to acknowledge that none of these attributes has much practical application in day-to-day driving on Australia’s congested and woefully under-maintained roads, even the occasional foray onto a race track will instantly demonstrate why Porsche maintains its position as the sports car of choice for so many enthusiasts.
Linear power delivery and the immediate response are the hallmarks of this engine. It has a maximum engine speed of 8,000rpm. The distinctive boxer sound remains untouched (although some of us still pine for the more involving engine note of earlier models). New additions include technical highlights such as adaptive cylinder control. In part-load operation, it temporarily interrupts the injection process in one of the two cylinder banks, thus reducing fuel consumption.
Piezo injectors are used for direct fuel injection for the first time ever in a high-revving engine. They split each injection process into up to five individual injections. This supports a complete – and therefore emissions-friendly – combustion process. A variable intake system with two resonance valves ensures optimum gas exchange in the cylinders.
Aerodynamic efficiency: more downforce, no increase in drag
The comprehensively improved aerodynamics concept produces up to 50 percent more downforce, without adversely affecting drag. The aerodynamics of both models benefit enormously from the newly designed single-chamber arch rear silencer: it creates space in the rear section for a functional diffuser, which accounts for a good 30 percent of the downforce at the rear axle in the 718 Cayman GT4.
The fixed rear wing also delivers greater efficiency: it produces around 20 percent more downforce than its predecessor. This corresponds to an additional downforce of twelve kilograms at 200 km/h (so again, not much value on public roads!) The front section maintains the aerodynamic balance with a large front spoiler lip and so-called air curtains. The latter calm the air flow along the front wheels.
Porsche 718 Spyder: an open-top road sport car with lightweight convertible top
The new 718 Spyder gets a lightweight convertible top that can cope with the high top speeds. It continues the history of such famous Roadsters as the Porsche 550 Spyder and the 718 RS 60 Spyder.
The roof is suitable for everyday use and can be stowed away under the boot lid in just a few steps. Unlike the GT4, the 718 Spyder has a rear spoiler that comes up automatically at 120 km/h (so on public roads … oh forget it!) Thanks to the functional diffuser, it is the first model in the Boxster family to generate aerodynamic downforce at the rear axle.
High-performance GT chassis: optimised for best dynamics
For the first time ever, the 718 Spyder benefits from the high-performance GT chassis of the 718 Cayman GT4. Superior cornering dynamics are further refined with lightweight spring-strut front and rear axles, making use of racing technologies. The direct connection to the chassis is partially by means of ball joints.
The Porsche Active Suspension Management damping system with 30mm lower suspension lowers the centre of gravity and improves lateral dynamics potential. It is specifically designed for use on the racetrack and makes the handling characteristics of the 718 Cayman GT4 sharper. The 718 Spyder also benefits from this design. The Porsche Stability Management (PSM) operates with even greater sensitivity and precision here but can optionally also be deactivated in two steps.
Porsche Torque Vectoring (PTV) with mechanical rear differential lock further enhances the longitudinal and lateral dynamics, cornering performance and driving pleasure. The GT4 also comes with the option of a Clubsport package. This includes a rear steel roll bar and a six-point seatbelt on the driver’s side.
Gripping: powerful brakes, ultra-high-performance tyres
The high-performance brake system in the Spyder and Cayman GT4 provides consistent braking suitable for track driving thanks to large aluminium monobloc fixed-caliper brakes. The Porsche Ceramic Composite Brake (PCCB) is also available as an option. One new feature is that the Spyder now runs on ultra-high-performance tyres specially adapted by Porsche. They are part of the overall package that helped the Cayman GT4 knock more than ten seconds off its predecessor’s time around the 20.6km Nürburgring Nordschleife.
Australia specifications
In Australia, specifications are improved to include many features as standard. These include tinted Bi-Xenon headlights including Porsche Dynamic Light System, ParkAssist including reversing camera, automatically dimming mirrors with rain sensor, windscreen with grey top-tint, ambient interior lighting, alarm system with interior surveillance, Apple CarPlay, navigation including Porsche Connect, digital radio, cruise control, two-zone climate control and heated seats. In the GT4 Spyder, a heated multi-function steering wheel is also standard in Australia.
The new Porsche 718 Spyder and the 718 Cayman GT4 are available to order now, and will arrive in Australia from Q1 2020. Prices start from $209,000 for the Spyder and $218,800 for the Cayman GT4.
No, the new Cayman GT4 and Spyder are far from cheap, but if you still love the thrill of driving a real performance machine, they’re a bargain.
Once we have tested and assessed the new Porsche 718 Spyder and 718 Cayman GT4, seniordriveraus will bring you a comprehensive review, including everything the over-50 driver needs to know.