We now have 455 miles on the Vespa, and I filled it up today. I put in 1.917 gallons of gas at $2.80 per gallon for a grand total of $5.37. I got (351-455) 104 miles out of my nearly 2 gallons for roughly 50 MPG. The mileage went down a little bit, but then again I haven't filled up since November, so I'll take it.