They may not have had an imminent reliability concern that required an engine swap right there, but that doesn’t mean they didn’t have any reliability concern for the final part of the season. I read articles only a couple of weeks ago that stated they were marginal on engines coming from people in the team.FittingMechanics wrote: ↑14 Nov 2025, 12:57Mekies said it was not a change due to reliability concern. It's going to be interesting to see if they can walk that back.Badger wrote: ↑14 Nov 2025, 12:41It just seems like a murky issue. Clearly teams have been taking extra engines for years, and I doubt all of those can be attributed to a specific reliability concern at the time of the swap. RB has always been on the limit with their engines and have said that they are this year too. It’s likely they would have risked not taking another engine if quali in Brazil went well, because when you are in the title fight you have to take such risks. But when they went out in Q1 the risk reward for taking another engine changed. The reliability risk over the final 4 races with an old engine is obviously bigger than what you lose from going P17 —> pit lane.
I guess it depends on where the FIA draws the line for a legitimate reliability concern, and what reliability data RB has.
And I don’t know about you but when teams have changed engines in the past and gone above the limit, it hasn’t been my impression that they’ve done so to avoid an imminent engine failure due to a specific reliability issue. It’s more like they’re anticipating future issues and strategically taking a penalty before that happens.
If RB can show that they were marginal on engines for the end of the year then I think there’s precedent for it.
