Im a statistician.
Death in UK/aus is no higher with respect to age.
As chrissydrove points out.
In fact under 25's peak it. More accidents resulting in death related to number of drivers is OWNED by under 25's.
Children are young dumb and full of .. i was a 20 something. I had a worked 5.9 liter V8 AND a sd 900 duke.
Fortunately i had some skill so i only damaged myself and never killed anyone.
This applies to aus only.. Why have a power car in UK when the wipers are on 75% o the time..

Older peeps tend to be far more conservative and cautious... as they should be. the reaction times are down and they know it.
Funny thing is.. I dont drive anymore.... i let license go fallow because sold vette and bike.
Then
I went to rta to get new license.. and they said i had to take full test again... LOL
But my man i said, i have pilots license. If i can fly a plane surely i can drive a car.
No thats not how it works he said.. yes it is i said... you would trust me to fly you but not drive you... sure thing.
no joy.
And i dont need vehicular creds till i get a vehicle... Im thinking a bentley
J