Since getting my Roadsport 125 in Feb I've done 1200 miles and it averages 30-35 mpg. My previous car a 1700 Supersprint driven on similar Blats at similar speeds averaged at best 25mpg.This is on the road, don't expect anything like this on the track.
The tank as you say holds 8 gallons though the "usable" amount varies from car to car depending on the length of the pick-up. I have found out mine manages 7 usable gallons and is unable to get the last gallon out of the tank. I believe that the pick-up can be extended to improve range with of piece of tubing,
The fuel gauge is not very reliable so I fill up before 200 miles is on the trip.
John
Edited by - John Hughes on 12 Apr 2011 00:43:13