Rear grid view at the 2026 Miami Grand PrixSignificant changes have been unveiled in regards to the F1 power units, both for the current season, and beyond into F1 2027. Next year, the electric/internal combustion power ratios are to be tweaked, but before that, the FIA has updated its system for helping struggling manufacturers. All of this and more, as we take a look back at Friday’s major F1 news headlines. F1 electric/ICE split updated for 2027 Want more PlanetF1.com coverage? Add us as a preferred source on Google to your favourites list for news you can trust. The FIA has revealed that a change to the power unit regulations has been agreed for F1 2027. An increase in internal combustion engine power is coming. FIA expands ADUO safety net Before we get to 2027, the ADUO [Additional Development and Upgrade Opportunities] process has been updated, in light of the effect of the cancelled Bahrain and Saudi Arabian Grands Prix. Designed to help power unit manufacturers which have fallen behind the leading example, the update means that a new first checkpoint has been determined. Aston Martin AMR26 Sakura stay explained One of the manufacturers to benefit from the ADUO system will be Honda. After a harrowing start to the Aston Martin and Honda partnership, an AMR26 car was left behind in Japan for Honda testing. The decision appears to have paid off. Key Saudi Arabian GP decision looms F1 2026 calendar efforts are in ‘overtime’, as a decision on reinstating the Saudi Arabian GP moves closer into view. The Bahrain, Las Vegas and Abu Dhabi GPs could serve as prominent puzzle pieces in the calendar scenarios being discussed. Should Ferrari be worried by Miami GP upgrade results? The answer is yes, according to Karun Chandhok. Ferrari introduced 11 upgrades – the most of any team – for its SF-26 challenger in Miami. It was a package which failed to rattle McLaren or Mercedes, so Chandhok has been informed. Want to be the first to know exclusive information from the F1 paddock? Join our broadcast channel on WhatsApp to get the scoop on the latest developments from our team of accredited journalists. You can also subscribe to the PlanetF1 YouTube channel for exclusive features, hear from our paddock journalists with stories from the heart of Formula 1 and much more!