For those still looking for some 4xe mileage, here is our first trip since getting it back from service to Toledo Jeep Fest this weekend .
2021 4xe Rubicon on 35" Nitto Trail Grapplers (speedometer recalibrated with a Tazer), 2 Adults, no additional gear or mods
Started the day at 100% battery, full tank of fuel (87 octane) and the display showing 22.6 MPG average. Vehicle in Hybrid Mode and Max Regen ON for the entire trip. Drove conservatively and mostly at the posted limits using standard cruise control (no ACC). I vary rarely took it out of cruise control and adjusted the speed with the +- so as not to invoke any Max Regen on the highway or interstate. There was very little traffic, 88F, 93% humidity and 8mph winds from the South. Flat Ohio roads.
85% of the driving was above 60mph with most of it right at 70mph and a top speed of 74mph. The vehicle traveled the first 3.5 miles on battery only until reaching 60+ mph on the highway when the engine kicked on and never stopped until getting to Toledo. The battery assisted for 52 miles in hybrid mode before reaching <1% showing us 19-25 current mpg (28-30mpg if we were behind a tractor trailer or camper). Current MPG dropped to around 15-16 mpg without the battery assisting when heading east and north and 12 -16mpg when heading south and west.
230.6 total miles (8 electric, 222.6 gas hybrid)
15.68 total gallons of fuel used
230.6 / 15.68 = 14.7 miles per gallon combined vs trip computer displaying 16mpg?
222.6 / 15.68 = 14.19 miles per gallon (hybrid engine only)
I expected a MPG hit when adding the 35s but was still hoping to get 300 miles on a full battery and single tank of fuel.
Anybody else have any input or recommendations for getting better results? Those 19.5 and 21mpg's sound pretty nice. Interested to know if you are still running the stock 33" tires or other mods and if you have found different octane fuel to make any difference or any other variables I might be overlooking. Thanks