According to a joint press release, the two brands have been working closely for almost two years before their relationship was made formal, working on engineering BP fuels and Castrol lubricants for their 2026 engine.
With new regulations set to be introduced to the sport in 2026, sustainability is an increasingly important factor, and that is at the heart of this partnership.
Speaking on the major signing, chief executive officer of the Audi F1 Team Andreas Seidl said: “Audi and BP have always worked together successfully in motorsport.
"We are delighted that we can take this special partnership to the next level in Formula 1. Audi stands for ‘Vorsprung durch Technik’ and BP and Castrol also aspire to deliver the best technologies in the field of fuels and lubricants. This is a perfect match.
"It is a strong signal for Audi’s future F1 factory team that we have been able to establish this partnership at such an early stage.
"We sense the appeal of the Audi F1 Project and how many renowned companies want to work with Audi in Formula 1."