1) even after you go through all the trouble, you'll be back at the same spot - full refund or topup, doesnt matter loan approve or not. the car isn't delivered yet.
2) full refund - take your deposit, cancel loan and shop elsewhere. as a consumer you're not letting them get the sale already.
3) there's nothing such as low mileage. all import cars have their mileage adjusted. you cant trace back mah.
4) no matter how there's no chance you can take advantage of that 15k.
5) ada local car with service record dont want buy, go buy import car from far far away with unknown history.

lol another stupid one

buy imported car then go back to Audi SC locally?

if that's not asking to be chopped in the neck i dont know what is.