Cadillac and Ferrari have announced a collaborative testing plan for 2025.

      "We’re not planning to utilize our entire 20-day TPC allowance."

      Cadillac’s initial on-track testing prior to its 2026 Formula 1 entry has been announced, with Ferrari supplying both the car and technical assistance. Team principal Graham Lowdon mentioned to Japan’s AS-Web in Singapore that the new American team will "definitely be testing" before the year's end, marking Cadillac’s first live systems assessment ahead of its debut. "It's not that we actually want to test cars since we don’t have our own," Lowdon clarified. "From a technical perspective, there’s no advantage in running another team’s chassis. However, we have a race-preparation program and want everyone collaborating before Melbourne. We don’t want individuals meeting for the first time at the inaugural race."

      Ferrari team principal Frederic Vasseur confirmed that the Scuderia will lend one of its past models—either the 2023 SF-23 or the 2019 SF90—for this purpose, along with engineers to oversee the power unit and gearbox functions. "We’re not going to exhaust our entire 20-day TPC allowance, so we can assist Cadillac by loaning them our old car for testing, potentially in November or December," Vasseur stated. "It’s in the best interest of the sport for them to be able to drive another team’s car for a day or two this year. We provide the power unit and gearboxes, so we’re pleased to cooperate."

      The session, which is expected to include Valtteri Bottas with Mercedes’ approval and Sergio Perez returning to F1, will prioritize pit operations and systems integration rather than outright performance.