This is supplemented by two electric motors delivering an additional 210 kW (286 PS 282 hp). The engine weighs 135 kg (298 lb) according to Porsche and delivers 447 kW (608 PS 599 hp) at 8,700 RPM and 540 N⋅m (398 lbf⋅ft) of maximum torque at 6,700 RPM. The 918 Spyder is powered by a 4,593 cc (4.6 L 280.3 cu in) naturally aspirated V8 engine built on the same architecture as the one used in the RS Spyder Le Mans Prototype racing car without any engine belts. The 918 Spyder's engine is based on the unit used in the Porsche RS Spyder The 918 Spyder was the second plug-in hybrid car manufactured by Porsche, after the 2014 Panamera S E-Hybrid. However, the 918 RSR didn't make it to production. Porsche also unveiled the RSR racing variant of the 918 at the 2011 North American International Auto Show, which combines hybrid technology first used in the 997 GT3 R Hybrid, with styling from the 918 Spyder. The production version was unveiled at the September 2013 Frankfurt Motor Show. On 28 July 2010, after 2,000 declarations of interest, the supervisory board of Porsche AG approved series development of the 918 Spyder. The 918 Spyder was first shown as a concept at the 80th Geneva Motor Show in March 2010. The 918 Spyder was sold out in December 2014 and production ended in June 2015. Production began on 18 September 2013, with deliveries initially scheduled to begin in December 2013, and a starting price of ≈€711,000 (US$845,000 or GB£711,000). The 918 Spyder's 6.8 kWh lithium-ion battery pack delivers an all-electric range of 19 km (12 mi) under the US Environmental Protection Agency's five-cycle tests. The 918 Spyder is powered by a naturally aspirated 4.6 L (4,593 cc) V8 engine, developing 447 kW (608 PS 599 hp) at 8,700 RPM, with two electric motors delivering an additional 210 kW (286 PS 282 hp) for a combined output of 652 kW (875 hp) and 1,280 N⋅m (944 lbf⋅ft) of torque.
The Porsche 918 Spyder is a limited-production mid-engine plug-in hybrid hypercar manufactured by German automobile manufacturer Porsche. 6.8 kWh liquid-cooled lithium-ion battery
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