Porsche 718 Cayman and Boxster GTS ditch four-cylinder for flat-six

New models eschew turbos with detuned 4-litre from the Spyder and GT4

Porsche has dropped its 2.5-litre, four-cylinder turbocharged 718 Boxster and Cayman GTS models from its portfolio, replacing them with new variants powered by the 4-litre, naturally aspirated flat-six engine from the Spyder and GT4.

These two new models sit above the 2.5-litre, four-cylinder turbocharged S variants and below the aforementioned Motorsport Department cars, and will go one sale later this spring, with the Cayman GTS costing from £64,088 and the Boxster equivalent an additional £1861.

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> New 2019 Porsche Cayman GT4 review - it's a bit special

Besides a tweak to the ECU reducing the four-litre’s output by 20bhp (the GTS models produce 394bhp), the flat-six engine is carried over wholesale from its more exotic family members, as is the sports exhaust system. While torque and weight figures haven’t been quoted – expect in the region of 295lb ft and 1420kg – Porsche has confirmed the performance figures: 0-62mph in 4.5sec and a 182mph maximum for the pair. And currently, only a six-speed manual transmission is offered.

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True to GTS tradition you’ll find darker contrast colours are present, including on the rear lip spoiler, the air intake and the Sport Design front bumper. There’s also a bespoke lower rear bumper, smoked front and rear lights, a set of 20-inch wheels and a host of dynamic tech familiar to those of you who have poked around a Spyder or GT4.

There’s a 20mm drop in ride height and Porsche’s sport chassis and active dampers come as standard. Torque vectoring and a mechanical limited-slip diff are also included in the rather generous standard specification. Carbon-ceramic brakes remain an option.

Alcantara continues the sporty theme inside, with the man-made material covering the steering wheel, seat centres, gearlever, centre console and A-pillars. On the Cayman the headlining is also made from the stuff.

So, why is Porsche bringing back a six-cylinder, NA engine when it made such a big song and dance about its new turbocharged four-pots? Aside from the awfulness of the four-cylinder units and the slow sales, the investment required to build the Spyder/GT4’s naturally aspirated engine from the 992’s turbocharged unit wasn’t small, therefore offering the GTS with a less powerful variant provides the economies of scale finance departments get off on. It also appears to have created a peach of a sports car.

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