Function that traverses object within object and returns value in Javascript [duplicate]

I have a huge object with several other objects inside, similar to the example below

const Carro = {
        GM : {'Corsa':'Motor MPFI',
             'Celta':'Motor VHC'},
Volkswagen : {'Gol':'Motor AP',
              'UP':'Motor TSI'}
}

I want to know how to do a function to chamala as follows

funçao(Carro,"Motor MPFI")

It returns me "GM, Corsa", that is, the key that has the value "Motor MPFI" and the object to which it belongs.