If 0w-20 is working find in your car, then feel yourself lucky.
Because this is what OEM actually recommends for Hybrid cars i-e 0w-20
But in PK, many people use this oil (Kixx 0w-20) but most of the times oil reduction happens and hence people switch back to others.
BTW, the best engine oils for Hybrid cars are
Its always better to stick with these viscosities.