To hurt or injure by maltreatment
Drivers can mistreat or beat up their cars and ignore or delay necessary maintenance and repairs until their car quits running, so age makes a difference when searching for a used car.
If you mistreat your employees or stockholders, you run the risk that a couple million people may know about it before nightfall, thanks to Twitter, MySpace, Facebook and citizen journalists.
Avoid Puppy Mills - disreputable breeding farms that mistreat animals by confining them in inadequate kennels, under poor conditions just to create additional litters.
mistreat prisoners than the Americans are.