Opt-out? Avis wrote to me that when I sign up for Preferred I will be robbed by DCC, no option to opt out and yet even more annoying - I can't find it in their T&C and they kept quoting something that makes no sense.

I wrote to Visa Europe and they didn't bother helping - they tell me to go to my stupid bank They don't bother to help. This is how my stupid bank dealed with my charge back:

1. I filed a charge back against the amount of SEK 35 due to DCC;
2. My stupid bank re-credited me the whole amount and then take it away again;
3.Their reason was - you bought the service, you used it and of course you have to pay for it, since you are in Sweden and you received a bill from Avis Sweden, what's the problem - at that point we gave up.

The bill is issued by Avis Sweden, despite the fact that I booked it through avis.com (via cash back site to get cash back to pay for the DCC). I have never agreed to pay anything than the USD amount quoted and throughout the rental I have never seen any amount that is NOT USD.

Even if I have a Swedish AMEX, I won't escape their DCC scam if I use Mr. Preferred profile because the bill is written out by Swedish Avis - of course you can try to dispute with AMEX in Sweden but again you are dealing with the very same people that see things the same way (European). Of course you might get a chance to get something back but it will be a long battle because when they question Avis they will say - since you signe up for Preferred you are agreed to be robbed.

The only way to avoid this is to pay cash when you return the car - which might be worthwhile if their DCC rate is 4%.