10:59 11-02-2026

Stellantis replaces PureTech with FireFly engines as new base for Euro 7

Stellantis is phasing out the problematic PureTech lineup and shifting to Italian FireFly engines for Euro 7 compliance, aiming to extend their life cycle beyond 2030 with hybrid upgrades.

Stellantis is closing a problematic chapter in its history: the PureTech lineup, which became a symbol of widespread failures and a reputational crisis, is being phased out. New CEO Antonio Filosa is betting on Italian FireFly engines instead—a move that reshuffles the power dynamics within the group and restores influence to the Termoli division.

The PureTech name has already disappeared from marketing materials, with the French now using the Turbo designation, though these are still the same EB2 units structurally. Internally, however, Stellantis is no longer willing to tie its future to engines that have led to legal and warranty claims across Europe for a decade. The decision is unpopular at the Douvrin plant, but the strategic shift is irreversible: FireFly is becoming the group's new base engine for the Euro 7 era.

Interestingly, these Italian units were previously effectively exiled—former CEO Carlos Tavares planned to replace them entirely with PureTech in the European market. But high reliability ratings changed that scenario. Today, FireFly appears in just three models—the Alfa Romeo Tonale, Fiat Pandina, and new 500 Hybrid—yet Stellantis sees it as the foundation for the future of internal combustion engines.

The company has already begun technical upgrades to the lineup to meet the Euro 7 standard. This involves not just 48-volt mild hybridization: the project aims to extend the FireFly's life cycle well beyond 2030 and develop a parallel electrified dual-clutch transmission.

FireFly is available in 1.0-liter 70-hp and 1.5-liter Turbo 130–160-hp variants, with the latter used in the Tonale and showing performance characteristics Stellantis intends to scale across more models. This also paves the way for more advanced hybrid configurations—up to full HEV and PHEV setups capable of competing with Japanese systems in efficiency.

Overall, the once-written-off Italian engine is becoming a key element of Stellantis's strategy during Europe's toughest environmental regulations to date.