A hummer or a fluffy-pink beetle Volkswagon.
What is the best car for a new teenage driver?
I don't think the cars you use have an age limit or age conditions, young or old, riding your car is about your personal desire & how you prefer it.
A manual drive beat-em-up like a 1993-2001 Honda accord or 2002-2005 Civic for under for under 5k and drive it to the ground. Or a recent Honda Fit.
I would suggest a hearse , as everyone will want to be taken out in that great vehicle, Now for a bonus optional affect, you could have fake or real corpses hanging out the back trust me you'll look radical.
Medium sized, reliable, underpowered and paid for.
An old beat up pick up truck.