It isnt a more fuel efficient way in the short run, they have to develop and test the crap out of the engines, there will be teething issues. Compared to using tried and tested engines. If they wanted to save fuel then they would do it with the logistics, transportation. It would save a lot more fuel if they cut down on the ammount of **** they shipped around the world.
Go to F1 Fanatic they had an article not that long ago talking about that. They're trying to fix it, but it's not that easy especially when you think about all the stuff they have.
F1 has a history of continuous improvement.
But various regulation changes since 2004 have prevented the cars from getting faster. Now we have reduced downforce and less power. Regulations are coming in that reduce the potential downforce and reduce the overall power available as power is going to be limited to within reasonable amounts, with only KERS bringing it up to where we are now (Which is still down on the V10s).
Teams are running out of ways to manipulate the regulations to make the cars go faster than intended. The regulations need loosening up to encourage innovation rather than teams simply copying the solutions of the other teams.
Yes I know all this, but surely that is a wrong thing to also say cause innovation isn't something just hindered by the FIA or FOTA, other teams do their fair share of this as well. As can be seen with the Double Decker Diffuser, or this year with the off throttle. The questioning of whether RBR had flexing aero. Teams brought all these up and had them questioned, if teams didn't complain for not figuring out innovation in the first place, and crying when they're outright beat by other teams the FIA might not put such a tough limit on everyone.
Also such high restriction are for driver safety but also trying to make the sport more fuel effecient and also cut down on cost. It seems like you want all of this, at the expense of pushing out private teams, but all making F1 look super elitist and deter other manufactures from wanting to join in. Hence why sportcar racing is probably going to be bigger than F1 if not already.
Also how is F1 not been innovative? The past years have shown some unique ideas that have won races for the teams that have figured them out first.
I guess my point is, you cant have the entire pie with out giving something in return. Can't have all that but still expect it to be highly competitive, unless you give up stuff.
I still don't think some of you are giving V6 turbos the respect they deserve. The 80s proved how well a V6 turbo could beat the N/A cars.