F1 regs debate heats up

Formula 1’s 2026 rules are being argued over now because the sport paired a new hybrid engine with active aerodynamics, then kept rewriting the details after winter testing. (fia.com) The basic engine layout is a 1.6-litre V6 turbo hybrid, but from 2026 the electrical side jumps from 120 kilowatts to 350 kilowatts while combustion power drops to about 400 kilowatts. The FIA and Formula 1 said in June 2024 that the target was a near-even split between engine and electric power, with cars about 30 kilograms lighter and running on 100% sustainable fuel. (formula1.com) (fia.com) The overtaking system is also new. Formula 1 said the leading car’s electrical deployment tapers after 290 kilometres per hour and falls to zero at 355, while a following car within one second can use MGU-K Override at 350 kilowatts up to 337 kilometres per hour for about 0.5 megajoules of extra energy. (formula1.com) That mix of battery power, drag-changing wings and speed-triggered override is why online critics keep sketching shapes and nicknames for the deployment maps. The “Karma diamond” label circulating on social media is not an FIA term in the published regulations; it is a fan shorthand for how the power curves appear to cross over in certain speed windows. (fia.com) (formula1.com) The rulebook did not stay fixed once cars ran. On February 18, 2026, the FIA said teams, manufacturers and Formula One Management had agreed to keep reviewing “energy management matters” after Bahrain testing, and on February 28 it approved amendments after tests in Barcelona and Bahrain. (formula1.com) (fia.com) One confirmed change involved engine compression ratio, a core combustion setting. The FIA said the ratio remains capped at 16:1, measured cold, but from June 1, 2026 it will be controlled in both hot and cold conditions, and from 2027 only in operating conditions at 130 degrees Celsius. (fia.com) The other live argument is about how much freedom manufacturers should get once engines are homologated, or locked in. FIA power-unit regulations for 2026-2030 set out a homologation and development framework, and later amendments created Additional Development and Upgrade Opportunities, or ADUO, to help suppliers judged to be significantly behind. (fia.com) (f1technical.net) Reporting on those amendments says ADUO can grant extra upgrade chances to lagging manufacturers at set checkpoints during the season, rather than reopening the whole engine formula. That is the source of the current argument over an “Internal Combustion Engine Performance Index” and benchmark engines: critics say the catch-up formula could reward one architecture as the reference point, while supporters say the mechanism is there to stop another 2014-style runaway gap. (trackside.media) (planetf1.com) Mercedes is central to that debate because its V6 set the standard at the start of the last hybrid era, not because the FIA has published a rule naming Mercedes as the 2026 benchmark. The FIA’s official documents publicly confirm six registered suppliers for the 2026-2030 cycle — Alpine, Audi, Ferrari, Honda, Mercedes and Red Bull Ford — but the social-media claim that Mercedes V6s are explicitly written in as the comparison baseline is not stated in the official sources I could verify. (fia.com 1) (fia.com 2) So the fight is less about one viral diagram than about whether Formula 1 can launch a radical engine reset, freeze most of it, and still let stragglers catch up without rewriting the championship mid-season. The FIA’s own line, as of February 28, is that more evaluation and technical checks on energy management are still ongoing. (fia.com)