there are and have been a lot of problems with aurigacrown this year in ibiza and mainland spain, if you google for auriga crown problem, you will see what i mean.
There are a lot of bookings that are being cancelled at the last minute by them with no offer of any other cars due to a lower than expected number of vehicles they have decided to hold, mainly due to the credit crunch. Some people only find out at the last minute when turning up to their office at the airport only to be told there is no car for them.
Just be careful, luckily it didnt happen to me but the internet forums are rife with complaints.
I used aurigacrown a few weeks back in ibiza, service was a bit of a let down, horrendous queues at the desk, if you dont take out additional insurance with them they will demand and charge €300 to your credit card as a deposit (rather than just reserving this amount), when you return the car you have to wait for a refund from them which can take anything up to a few weeks for it to come through. I waited for over a week to get my money back and lost out due to exchange rate fluctuations.
Who have your seen the car price through, Aurigacrown direct, or via an agent?