I updated my R32 fuel consumption for 2006. When I purchased the R VW's estimated annual fuel cost was $1142. Those were the good ol' days.... You can see that after seven months I've already spent more than that. :o(
I didn't buy the R to save money on gasoline, but still... at this rate I'll double VW's estimate by the end of this year.
Anywhoo, for comparison you can check how much gas the R guzzled--and how much it cost--in previous years by following this link.