My son has just turned 17 so I am letting him drive using the special leaner only insurance its costs me about £50 per month, you can save a couple of pounds by buying a longer policy, but as stated above as soon as they pass their test it is not valid. I did do some exploritary quotation checking. Supra, forget it it was £5.5k (more than the car me), my wifes A3 2.0TDI cabrio, £1400, the cheapest little run around I could find was £800, but that meant buying yet another car. I think I will pay the extra for the audi, and my son will be over the moon, about whizzing around in a convertible. It seems some cars that are far less likely to be driven by leaners are not much more expensive. Putting myself on his insurance as a named driver brought the policy down by a few hundred pounds as well.