Dreaming of hitting a child with a car is a bad omen as per dream meaning and interpretation. The dream means unexpected problems in near future. It is also a warning sign that you will get into trouble due to vehicle. It also means someone else causing problems but you getting blamed for it. Dreams of hitting a child with a car also means you will be absent minded and under unwanted stress in near future.
Dream of hitting a child with a car and it is totally unknown place means you will get into trouble in a new place. It also means not knowing about the rules of new place causing problems. People tricking you when they realize you are an outsider.
Dreaming of hitting a child with a car and you know the child means something bad happening to someone you know. You need to be careful while the particular child is around you.