I've used Avis in Canada, UK, Spain and Australia - a fair sample. Not all Avis outlets are the same. For example in Spain they will happily scam you with Dynam

I've used Avis in Canada, UK, Spain and Australia - a fair sample. Not all Avis outlets are the same. For example in Spain they will happily scam you with Dynamic Currency Conversion. Don't take this one event and think Avis are angels. Try the flyertalk forum for Avis.. To be fair though, Avis don't particularly stand out - all car hire companies pull these "tricks" (some people have alleged fraudulant).