FCA tells me my spouse's 2017 Renegade could lose fuel pressure and come to a stop while driving when using E-10 regular gasoline. The culprit is the fuel pump module. Currently there is no fix. FCA will notify me by mail when a fix becomes available. What to do in the mean time. Use E-85 fuel only. I gassed up this AM. Jeep computer showed 24.0 mpg on this tank of E-10. Pencil and paper calculated at 24.1 mpg. A few blocks of city driving, the Jeep's computer now shows 16.8 mpg with the E-85. Ouch! My previous flex fuel 200 got dismal mileage burning 2 tanks of E-85 with the same power train as the Jeep.