Teenagers suck
I am the eldest of five. I was a model child, lol. I only crashed my own cars, and only twice, both times minor collisions with immovable objects. Oh wait, I crashed Mum's car once, a tiny British-Ford Anglia, Yeah I had to pay the insurance deductible.
On the other hand, my younger brother, 10 years younger, and the youngest son, was an unholy terror. He crashed every car Dad/Mum ever owned, and every car I handed down, and almost every car he ever bought.
Finally, at age 40, he was killed in crash, leaving behind three sons and a daughter.
Some teenagers just never learn.
When my teenagers were growing up, I provided one old beater. I was pretty sure it would get beat up; but that's what I provided it for. As it turns out, it survived them all, relatively unscathed.