In 2009, FPT Powertrain Technologies completed the pre-production phase of the 900 cc twin-cylinder bifuel engine (CNG/gasoline). Development began with the twin-cylinder gasoline model (or Small Gasoline Engine), which represents the ultimate embodiment of the concept of downsizing to reduce CO2 emissions to minimum levels. A high degree of efficiency is assured through adoption of the MultiAir system for management of the air intake valves, large engine displacement to maximise thermodynamic efficiency, a minimum number of cylinders for minimal organic losses, and a design that employs the latest standards for minimising internal friction. Compared with existing naturally-aspirated CNG versions, the turbo provides an additional ‘fun-to-drive’ performance factor. Finally, the engine is flexible, economic and has very low CO2 emissions.