2020 Porsche 718 Cayman GT4 – Test Drive on Track. At the heart of the Porsche 718 Cayman GT4 is the new 4-liter 6-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 420 horsepower (309 kW) – 35 HP more than in the GT4 predecessor models. It delivers a maximum torque of 420 Nm at between 5,000 and 6,800 rpm. The manual transmission sports cars can both break the 300 km/h barrier: the 718 Cayman GT4 can reach 304 km/h (188 mph). 0 to 100 kph (62 mph) in 4.4 seconds.
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