But the thing that's super stark is how many marquees Stellantis have; I can't help but think that some consolidation and focusing of resources would be beneficial (and I'm well aware that plenty is shared already).
https://www.citroen.it/modelli/berlingo/elettrico.html
https://www.fiat.it/e-doblo/e-doblo
https://www.opel.it/veicoli/gamma-combo/combo-e-life/panoram...
They still have a fair number of unique parts, they still have a fair amount of individual development and certification, they still have their own parts supply chains… these all add costs compared with literally having the same vehicle.
It's not that I see no reason to have multiple marques—after all, there is meaningful differentiation between the different VW ones, for example. But at some point you've got to stop and ask when you have too many.
Chrysler has been taken over by different entities throughout the last 40 years but somehow managed to drag the new owner down every time. A bit like Rover before the Chinese takeover.
One one hand, we have the examples of those models that had the infamous FAP HDi 110 hp engine that gives a lot of problems, and Citroën's "Hydractive" (hydropneumatic) suspension was discarded due to the many problems they gave. We had a 1st gen Citroën C5, that had those two, and it needed to visit the garage every every 2 year to have some pretty costly repairs. Also, some of their newer cars with AdBlue have factory design problems in this system, and repairing that module is knowing that is gonna be relatively expensive and it's gone to fail in the future.
On the other hand, we had models like the Xsara, the 206, the 406, the C15, the Partner/Berlingo combo, and many others that were very reliable cars that rarely had problems.