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Mine seemed to be opposite this weekend. AC on was 24-27mpg, AC off was 30mpg. Could have been different elevation/terrain. Not sure. What really didn't make sense was the lower mpgs were at lower speeds 55-70mph, and the 30mpg was cruise set at 80, windows down.Yes ac was on. You don't lose mpgs with ac off you lose more when the window is down and causing all that drag
That seems unlikely. The computer uses the same distance travelled as you would. You know exactly how much fuel you put in.The figures your Jeep does for you are more accurate than you trying to figure out your MPG.
I usually tend to believe this. I've done a mpg spreadsheet for ages and it basically seems to match what the vehicles trip computer shows. But lately it hasn't. The only thing different is that I tend to sit in a parking lot for an hour each day with the car and on waiting for the rest of the family to get out of work. (I leave at 4 and they leave at 5). And although I don't believe that hour should factor into the calculations of MPG, maybe it does.That seems unlikely. The computer uses the same distance travelled as you would. You know exactly how much fuel you put in.
Average it over a few tanks and your calculations will surely be at least as good as the computers.
I usually tend to believe this. I've done a mpg spreadsheet for ages and it basically seems to match what the vehicles trip computer shows. But lately it hasn't. The only thing different is that I tend to sit in a parking lot for an hour each day with the car and on waiting for the rest of the family to get out of work. (I leave at 4 and they leave at 5). And although I don't believe that hour should factor into the calculations of MPG, maybe it does.
TS