The Making of the Porsche 918 Strictly limited to just 918 units and assembled in a 4000-square-metre manufactory by 100 selected employees by hand. Take a look at this footage from the birthplace of the 918 Spyder in Zuffenhausen, Germany. Porsche 918 Manufacturing Details This photo is actually from 2012 prototype building, but it says all about the weight of the monocoque. @Porsche Carbon fibre reinforced plastic (CFRP) monocoque was made using resin transfer moulding (RTM) technology. @Porsche The bigger inlet valves have ‘E’ written on them (Einlassventil in German) and the exhaust valves have ‘A’ (Auslassventil). @Porsche It takes 20 hours for one technician to assemble the engine which weighs 140 kg/308 lb by the time it is finished. @Porsche First V-engine with the exhaust manifolds between the ‘V’ and inlet channels on the outside of the engine. @Porsche Side air curtain with pyrotechnics shown