Originally Posted by Filthy Monkey

Sorry to be the bearer of bad news, but bookings made through AvisBA use the BA AWD number and, as BA apparently decided to opt out of the scheme (despite Avis being their car hire partner!), bookings using the BA AWD do not count towards your Avis membership. I had this argument with Avis last year and was really annoyed when I found out. Fortunately I had only used BA for a couple of bookings as I found a better value AWD to use. What's really annoying, though, is that my First Plus profile still has the BA AWD in it and I can't get Avis to change it, so I need to make all my bookings by phone. Incidentally, if you book using a non-BA AWD you will still earn Avios, as long as your BA number is in your profile. I only use the BA AWD on the very rare occassions that it gives me a better price.