I recently purchased a 2012 RTS SM5 that was a real find. It was bought for a wife who rode it a couple of times the first season and then it sat in the garage for 10 years. 438 miles on it when the dealer got it! They went over it an sorted it out and I picked it up 12 days ago.

Yesterday took it on a 800 mile ride to Chicago yesterday. The manual says it has a 6.6 gallon tank and I figured that even at 30 MPG I could go 160 miles between fills. After one fill I ran out of gas after 113 miles!

The tank does not seem to hold more than slightly over 4 Gallons!

Any ideas? What MPG should the 998cc be getting?