The 718 Boxster and 718 Cayman are back unchanged for 2018. Their 2.0L four-cylinder engine generates 300 horsepower and 280 lb·ft of torque in base versions. In the S variants, a 2.5L engine produces an additional 50 horsepower and 30 lb·ft of torque. A six-speed manual or a seven-speed, twin-clutch automatic gearbox are available. The four-cylinder’s 0-100 km/h time is pegged at 4.6 seconds in the base version. The 365-horsepower GTS editions are joining the lineup for 2018.