Teenagers better drivers than the rest? Not the sort of teenagers that were in my school. Wrong way, severe overspeeding, breaking signals, very close cutting, crossing 2 lanes at once, braking at the last second, handbrake turns and drifting in traffic..... I could go on.
Whenever we went in someone's car as a group, there were always 2-3 close calls during the whole trip. In fact, I think we were extremely lucky to survive.
Teens can not handle a responsibility like a car; at least not without proper education and adult supervision. By proper education, I don't mean ke "ammi ya papa ya chachoo ya phuppa ne sikhai thi"; proper driver's ed consists of weeks of courses, evaluations, and tests at closed circuits.
Teens love taking risks without caring for the consequences. Some grow out of it in due time but others don't, sadly.