Why the Driving Age Should be Eighteen In most states the driving age is eighteen. The driving age should be eighteen in all states. Overall, teens have the highest fatal crash risk of any age group. It is even more risky when there is more than two or three people in the car.The driving age should be eighteen in all states. The reason it is important for the driving age to be eighteen, is most younger drivers do not pay attention and think they have to show off.