Just home from a 8,313 mile trip on my 2018 Spyder RT Limited. We were two up plus pulling a BushTec trailer. The Spyder was great, no issue at all. We went from FL to CA, North to OR, ID MT, CO, Ut, then back to FL. 30 mpg overall, and a high of 34 mpg in the mountains. We uses high test all the time to give the Spyder full power ( local I use 87 oct).