Originally Posted by Ex Amex Card
Why do they ask for two credit cards and when did this start?

The ask for two cars when you rent a BMW, Mercedes etc. I did see this requirement on their website and/or in the confirmation e-mail.
I believe 1 has to be from Amexco, but I am not sure.
Last time I had an Opel, they didn't ask for a second card.
Why and when ...?? You have to ask Avis