how old where you when you first work on a car

so i always liked cars would build model cars anytime i could
so i remember the first time worked on a car was 12
dad had a pontiac and he wasn't much of a car guy had his friends helping him do a tune-up on it
they wanted someone to change the points (i guess they were to fat and old to climb under the hood)
so i volunteered ...don't know if it ran better but it ran
that was 50 years ago