2025 Porsche 718 Boxster S

2.5L Turbo Flat-4

2.5L Turbo Flat-4

A boosted boxer that pulls hard and flat through the midrange, trading the old flat-six's wail for a gruffer, torquier turbo punch that delivers serious cross-country pace in the 718 S and GTS.

Built by Porsche in Germany, the turbo flat-four ushered in the '718' badge for the four-cylinder Cayman and Boxster, a name chosen to honor the lightweight 718 sports-racer that took giant-killing wins at the Targa Florio in 1959 and 1960.

• The '718' name deliberately nods to Porsche's mid-century four-cylinder racers, reviving the four-pot layout in the modern mid-engine cars.
• Purists were divided enough by the four-cylinder soundtrack that Porsche later brought a naturally aspirated flat-six back for the GT4 and Spyder variants.
• The flat-four's horizontally opposed layout keeps the engine low and central, aiding the 718's prized mid-engine balance.