The Opel X16SZR is a 1.6 L (1,598 cc, 97.52 cu·in) straight-4 natural aspirated four-stroke water-cooled internal combustion gasoline engine, manufactured by Opel, a subsidiary of General Motors. The engine used on Opel/Vauxhall models, such as Astra, Vectra, and Zafira. The Opel