New Vehicles With Three-cylinder Engines Available in 2021 Published on May 27, 2021 in Galleries by Guillaume Rivard Photo: General Motors 2021 Buick Encore GXSlighty larger than the Encore, the new Encore GX offers two triple-cylinder engines: a 1.2-litre unit (137 hp, 162 lb-ft, 8 L/100 km) and a 1.3-litre variant (155 hp, 174 lb-ft, 8.5 L/100 km).