Came here just to rant about the FIRE and the Firefly. The Multijet was also extremely reliable.
Instead, they were tossed aside to promote whatever garbage came out of citroen design centers, i guess to achieve the destruction of stellantis. (except in south america, they still get to use the Firefly)
For a short while we had them in the US, on the Dodge darts and some other Fiat applications. 1.4 + multiair + sometimes turbo.
Great little engine that powered my first car, a 2005 Fiat Uno, made for the Argentinean market in Brazil: 1.4 (1.345L), 8v of reliability.