With my other Alpine system you could call the 1-800 number and find out what year Navtech database the revision was using. When did the first Civic '06's ship? With the cars being made in Japan, I bet there is an even bigger delay in the software. For instance, if the Civics start shipping in late '05, I woud not be surprised if the data disk was updated in early '05 with an '04 or late '03 Navtech database survey. There was a huge improvement in my '05 Jeep's system when I purchased the updated disk early this year for $150. Needless to say I removed it from the car when I sold it to Car Max and will sell on Ebay for a $75 starting bid.