gleff:

You are referring to hotlguy's post: ....Just saying thank you to the person who posted the k444404 code. It worked like magic for me a 40% discount on my MUC Audi A6 rental for 4 days including everything only €147...

That's what I found out:

-rentals in the US come with only 100 miles/day
-rentals in Europe have unlimited mileage
Your quote includes: Local Tax (TAX), Vehicle Registration Fee (VRF),
Airport/city/other surcharge, Unlimited Mileage

-I have a President's Club card. When I change the AWD to 444404 my Wizard # is gone. The reservation does not show on the Avis "Reservation List"! So, I called the President's Club Reservation and asked to add my Wizard #. The agent did and told me, that the reservation changed to "my AWD" and was (much) more expensive ... told her to leave the reservation without Wizard # .. and she did.... checked it at http://www.avisworld.com

Was that prudent? And is it ethical to use a (phony) AWD? Any advise .... thanks. The reservation is in FRA and I have to go to the counter anyway.