New Vehicles With Three-cylinder Engines Available in 2021 Published on May 27, 2021 in Galleries by Guillaume Rivard Photo: MINI 2021 MINI CooperIn base trim, the MINI 3 Door, 5 Door and Convertible models use a 1.5-litre three-cylinder engine (134 hp, 162 lb-ft, 7.5 L/100 km).