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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
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.
 

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Wow... I've only filled up twice and both times the Renny's MPG stated more than what it was when I took the mileage and divided by the gallons I put in. This last time the Renny said 24 but I calculated 21.7. Last time it said 24.5 and I figured 23. Better than my Wrangler but nothing like you guys even with mostly highway the first time. Hopefully the computer updates on Weds will hope. At least I assume it will need them.
 

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The mileage you get will drop off quickly if the car is accelerated aggressively or if there is a lot of stop and go traffic.
 

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Also elevation changes can have a big effect. I recently drove back and forth between Raleigh, NC and Wilmington, NC. Wilmington is at sea level, about 400 feet lower in elevation. The average economy going from Raleigh to Wilmington was about 0.2 mpg higher than the trip back, just because of a 400 ft elevation difference!
 

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We picked up our Renegade Latitude with a 2.4 L engine onFriday 8/14

550 plus miles on it already. Overall average is 25.9 MPG. Went touring the eastern Sierras. Drove overMonitor pass (elevation 8,314) and back into Gardnerville, Nevada. Then over Carson Pass (8,574 feet)and CarsonSpur (8,290 feet) down into the bay area. Did not much traffic. Will seehow new jeep handles stop and go traffic this week. L
 

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The figures your Jeep does for you are more accurate than you trying to figure out your MPG.
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.
 

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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
 

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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

It may be AS accurate, but MORE accurate seems unlikely.
 
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