2023 Gladiator Rubicon, 6cyl gas, just under 11k on it. Mine is inconsistent too (4-5 mph) and the 8 speed auto trans NEVER knows what gear to get in, which KILLS the gas mileage (I've yet to see better than 16mpg...) let alone the 17-22 mpg lie that was on the window sticker...
I'm new to this forum. I just purchased a new 2023 Gladiator Rubicon with the 6cyl engine and am averaging 14.5 (!?!) so far with 1100 miles on the odometer. 90% of my mileage is highway at 65-70 mph. This is our 4th new jeep since 2015 (all 4 door Wranglers 6 cyl. gas) and I must say I am...