Honda had a 1.5L V6 Turbo.
TAG Porsche had a 1.5L V6 Turbo
BMW had a 1.5L Inline 4 Turbo
Ford had a 1.5L V6 turbo
Alfa had a 1.5L V8 Turbo
Ferrari had a 1.5L V6 turbo
Ford als had a 3.5L Atmospheric engine
So where's that V12 Turbo?!
My opinion is that you're just giving an opinion on matter you don't know..
The only 12 cylinders that have ever seen F1 since the 1970's:
Alfa Romeo
BRM
Ferrari
Honda
Lamborghini
Life
Matra
Porsche
Subaru
Tecno
Yamaha