FIRE abbreviation (Ang. fire), actually F.I.R.E., contrary to appearances, it has little to do with fire. It is derived from the English term Fully Integrated Robotized Engine, that is, a fully integrated and robotic engine. The term refers to the production process of the unit, fully automated and performed by industrial robots – from assembling the basic units to filling the engine with oil and starting it for the first time.

The structure of this unit is simple and symmetrical (relative to the plane of symmetry of the cylinders). It has a shaft supported by five bearings and a single one (8V) a camshaft driven by a toothed belt. The valves are actuated by glass pushers with lamella adjustment of the clearance. It turned out 10% lighter, included 30% fewer parts than the predecessor (family pusher motor 903-899 cm3) and already in its basic versions it offered better performance and low fuel consumption. What's more, FIRE engines are known for their durability. They have become the main gasoline engineers in the recent small and medium-sized Fiats 25 years.