Hey, sorry for the delayed reply.

I always end up having to try a dozen codes or more, because the discounts vary so widely by date and rental location. I try to keep my website updated with new Avis codes and old codes that still work, so you can always check there.

Also, for folks who don't already know, there is a big list of recently-checked corporate AWD numbers a few pages back in this thread.

I don't know any one AWD number or AWD number / coupon code combo that is the magic ticket for every rental. For me, it's a process of trial and error every time.