I want to tell my girlfriend to take care of her own car
Would that be a good idea?
Yes, because it interferes with my drinking. I want to drink in my free time.
I understand it interferes with your free time, but she is your girlfriend. Maybe drink less to avoid bad health so you can have more energy for your girl instead.
I'm going to break up and never date her again.
Oh I see, I didn't realize she was that much of a problem. It sounds as if you prefer drinking more than female company so I hope you have fun with that. Drink up!