how old where you when you first work on a car

at 13 I was into everything to do with cars and dirt bikes, everything. Dad would give me a manual for what I was working on, he'd say read it and get back to me when you're done the job.
I had a full set of snap on tools by the time I was 15 after grandpa retired from GM.
I started legally driving at 14 during daylight hours.