the porsche 918 spyder is a mid-engined plug-in hybrid sports car. it made by porsche. the spyder is powered by a naturally-aspirated 4.6 litre v8 engine, developing . with two electric motors delivering an additional it has a combined output of . the 918 spyder's 6.8 kwh lithium-ion battery pack delivers an all-electric range of under epa's five-cycle tests. the car has a top speed of around .