I've noticed on several occassions while using the Avis website the rates were extrmely high even though I entered a very good AWD (D005297). Upon further examination I saw in the "Rates & Discount" section the AWD was missing and the rate code showed N/A and the rate was the same as a reservation made without an AWD number. Upon contacting Avis web support I was told Avis.com was experiencing problems. As I said, I have noticed this on several occassions intermitently for many months now. So just be aware, even with your AWD numbers inserted, make sure you check to see that it appears in the "Rates & Discount" box on the "Car Selection" page. If it doesn't you aren't gettng your discounts.