I couldn't care less

US /aɪ ˈkʊdnt kɛr lɛs/
UK /aɪ ˈkʊdnt kɛr lɛs/
"I couldn't care less" picture
1.

es ist mir völlig egal, es kümmert mich nicht im Geringsten

used to express that one does not care at all about something

:
He was complaining about his new car, but I couldn't care less.
Er beschwerte sich über sein neues Auto, aber es war mir völlig egal.
Whether they come or not, I couldn't care less.
Ob sie kommen oder nicht, es ist mir völlig egal.