Most driving schools who use Ford/Vauxhall etc change thier cars every 36 weeks according to the AA. 36 weeks may sound very soon but i suppose they clock up incredible mileage very quickly.

An independant may keep a car for 3+ years so they'll want something very robust and maybe a Audi fits that requirement.

When i was 17 my first learner car with my instructor was a 2 month old 2001 Corsa. Then i ended up in one of the first Honda Jazz.

In my opinion changing cars every 36 weeks is a waste of money and maybe if they kept them longer then they could pass savings onto the students. Most learners will not get a brand new car when they pass their test, most will get a used car with some minor issues and shall we say "its own personality" so they'll have to learn to live with that.

But i think you're being a little harsh on learners, i never curbed any learner car and nor did i shag the clutch. I was one of those strange learners who would get a hill start right the very first time but normal driving i wasnt very good at lol