Honda has registered to be one of six power unit suppliers in Formula One's new engine era from 2026-30, the governing FIA said on Friday.
The Japanese carmaker officially withdrew from Formula One after powering Max Verstappen to his maiden world championship with Red Bull in 2021 but has continued to provide engines under a technical support deal that runs to 2025.
Red Bull has set up its own powertrains company to provide engines in the post-Honda era and will be partnered by Ford from 2026, meaning Honda will have to find a new team partner.
The FIA said in a statement that Renault-owned Alpine Racing, Audi, Ferrari, Honda Racing Corporation, Mercedes-AMG High Performance Powertrains and Red Bull Ford had all registered to supply the next generation of engines.
Formula One currently has four suppliers.
Audi is taking over Swiss-based Sauber, who currently compete as Ferrari-powered Alfa Romeo, and entering a factory team from 2026.
Ferrari also supplies its own team and Haas, while Mercedes provides engines to Aston Martin, Williams and McLaren in addition to the works outfit.