I suspect that many of those who have so far responded on mileage performance of the 1330 are riders of RT Spyders. Perhaps I can chime in on the part of the F3. Ours is a 2017 F3L, ridden two-up 95% of the time (total riding weight about 370 lbs.), and mostly on country back roads or secondary highways where we probably averaged between 50-65 mph (80-110 km/h). Varying weather, all sorts of terrain - flat, hilly, twisty, straight. At the start, we had a short, stock shield, but later switched to a much bigger, 23" F4, pushing more wind. So far, always using premium fuel - 91 octane, occasionally 93. In US gallons, I believe we have experienced trips of 37 mpg on up to 42 mpg. This much I do know - - twice I pushed it almost as close to dry as I could. Both times, I had reached 250 miles (400 km); my warning light had been on for about 35 miles (50+ km) and at the end all fuel indicator lights had gone out; there was still some fuel left. When I filled up, I calculated that I likely had about a half-gallon+ (2L+) still in the tank; perhaps enough to get me another 20 miles (30 km) further down the road. Certainly, mileage expectations can and do vary, depending on weather, terrain and other factors. So, I'm fairly comfortable gambling that I can get 250 miles (400 km) out of a tank if I have to; but most times I like to fill up with a bar or two still lit up on the tank indicator. There's no prize for walking.