Usually depends on the car if you look on the warning,and guide signs in your car it usually tells you.I think its 12.
12
7 months
10 years old
60 pounds.
5
the child should be at least 9 to ride in the front seat
I think it has to do with Height and Weight rather than age
13
13
Children under 4 cannot legally ride in the front seat. Otherwise, it is suggested that anyone under 12 should ride in the back for the highest amount of safety. If necessary for a child to ride in front be sure to push the seat back as far as possible.
12
10 years