This is the 9003rd most frequent Portuguese word.
auto
"Auto" in Portuguese means "car" or "automobile."
auto refers to 'automation' or 'automatic device'
O auto do carro está com problema.
The car's automation has an issue.
auto is used as a synonym for 'car' in casual Brazilian Portuguese
Eu comprei um auto novo ontem.
I bought a new car yesterday.
auto refers to a theatrical script or play in an archaic or formal context