All of the Merc teams are using a Petronas fuel. They will have to use an "interim" fuel if they don't make the homologation deadline. IF this comes to fruition, expect the other manufacturers to have a Melbourne meltdown.
Its either they are hiding something, or Petronas plant is struggling with FIA audit.AR3-GP wrote: ↑26 Feb 2026, 06:39All of the Merc teams are using a Petronas fuel. They will have to use an "interim" fuel if they don't make the homologation deadline. IF this comes to fruition, expect the other manufacturers to have a Melbourne meltdown.![]()
In that scenario, Petronas would receive more development time with no consequences while other manufacturers cut their time short to make the deadline.
It would strange not to attempt to run the approved fuel on track before the homologation deadline. As has been rumored for a while, Petronas seems to struggle with the audit. Considering that Mercedes is believed to be running beyond 16:1 compression ratio, it's much harder to get a sustainable fuel to work.CHT wrote: ↑26 Feb 2026, 07:33Its either they are hiding something, or Petronas plant is struggling with FIA audit.AR3-GP wrote: ↑26 Feb 2026, 06:39All of the Merc teams are using a Petronas fuel. They will have to use an "interim" fuel if they don't make the homologation deadline. IF this comes to fruition, expect the other manufacturers to have a Melbourne meltdown.![]()
In that scenario, Petronas would receive more development time with no consequences while other manufacturers cut their time short to make the deadline.
There has already been quite a bit of speculation that Mercedes has already passed a "hot" test and could pass a "hot" test tomorrow.bluechris wrote: ↑26 Feb 2026, 08:30Maybe the problem to homologate the fuel is that if they need to change something in the middle of the season in the engine as the new test for compression will be implemented, the fuel is possible that needs to be different then. How you fix that? Better delay somehow till then the fuel homologation. I think that this is maybe a problem in they minds and if it's true it's a difficult equation.
That time was done with a new PU, it was reported during testing they swapped.bluechris wrote: ↑23 Feb 2026, 18:43Ferrari nearly did 16 GP's with that engine when Leclerc did that time. You really believe that the engine was in the limit? All teams have a lot to give from the engine side from Melbourne and after.
That speculation was dubious at best. It basically suggested Merc sat out a session of testing to perform a "hot test" that had not even been defined, and with what equipment? In reality they were fixing an issue, perhaps swapping the engine.zibby43 wrote: ↑26 Feb 2026, 08:47There has already been quite a bit of speculation that Mercedes has already passed a "hot" test and could pass a "hot" test tomorrow.bluechris wrote: ↑26 Feb 2026, 08:30Maybe the problem to homologate the fuel is that if they need to change something in the middle of the season in the engine as the new test for compression will be implemented, the fuel is possible that needs to be different then. How you fix that? Better delay somehow till then the fuel homologation. I think that this is maybe a problem in they minds and if it's true it's a difficult equation.
What's more, from what I gather, none of the teams have voted to move forward with both an ambient and a hot test.
Regarding the reliability piece (i.e., the two PU changes in Bahrain), one of the issues was pneumatic-related. The other cause is unknown. But in both instances, we don't know the severity of the problem. Yes, they replaced two units, but it is much quicker to just change out an entire PU (especially when they're brand new and all the mechanics are still learning the platform) when you have limited time to troubleshoot. The track time is valuable.
Because it’s absolutely planned to have the fuel approved last minute, right?
Potentially, yes. Given that there is no penalty in not having the fuel ready for the first race, it's perfectly understandable to stretch fuel research as far out as possible. Worst case, for a race or 2, teams have to use a standard fuel supplied by FIA (with a potential danger of that fuel causing issues to the PU). If that extra research time can unlock a tenth or 2 in this duration, it's a great win for a race calendar of 24 races. Why did other suppliers went so far ahead in time to get it homologated?
It was always my theory that they were waiting for the outcome of the compression ratio debate before finalizing their fuel homologation.