Aston Martin Formula 1 power unit partner Honda says it will just bring one power unit improvement for this year despite being afforded two upgrade tokens.<br>For the brand-new 2026 power units, F1's governing body the FIA devised an upgrade scheme called ADUO (Additional Development and Upgrade Opportunities), which grants manufacturers additional dyno hours and cost cap allowance on a sliding ...<a class='more' href='https://www.autosport.com/f1/news/why-honda-will-just-use-one-of-its-two-upgrade-opportunities-in-f1-2026/10833102/?utm_source=RSS&utm_medium=referral&utm_campaign=RSS-ALL&utm_term=News&utm_content=uk'>Keep reading</a>