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In stop and go city driving in my 2006 CTT, I'm getting ~10mpg, maybe a mpg or two less if I'm doing some "closed course testing" . Mixed driving improves that to maybe 11mpg, and I bet I could squeeze out 12-14mpg in all freeway driving.
My factory PCM always read high - - probably 1-2mpg versus the odometer math. Now that I'm using an Android head unit I don't have that screen, but for those who've similarly ditched the stock PCM there's supposedly a way to use the Torque app with Android firmware that allows Torque to be whitelisted so that its not shutdown and remains able to keep a running tally without having to start the app every time you drive.
I do wonder if I'd see better numbers (maybe a couple mpg better) if I replaced my primary O2 sensors.
I have a 2005 S and I see 14mpg on highway on way to Vail, Co from Iowa and 16mpg coming back. That's averaging 70mph (according to trip computer in dash) over 14 hours. That's over a 980 or so mile trip (yes, nonstop except for fuel) that I do 5-6 times per year.
My stop and go commute in my '10 GTS nets around 19 L/100 KM (12 mpg). Highway, I avg around 14 L/100 km (17 MPG). I am happy with it as it is like a Prius compared to the '07 Jeep SRT8 I had for a few years!
The most we have gotten with our 2013 diesel is 765 miles indicated for a tank. This was before we hit 5,000 miles and added a lot of modifications. Granted we had been driving very conservatively on a highway prior to filling up. I have a photo of the dash - just need to find it. After all the mods, and weight from skid plates, bush bar, rock sliders, off-road tires, etc. we are not seeing numbers like that any more. Just the 18 gallons of water we carry weighs over 150 lbs.
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I see 13-14mpg with very mixed driving. No worse no less. However I've only owned it in the winter so when summer gas blend is back I'd expect closer to 15mpg. I honestly try to ignore it,
I average 16.3 in highway, stop and go traffic, backroads, and city driving in my 2004 CTT.
I was able to get 18mpg average on a drive from Denver to Vail and back on a friday afternoon (no trafiic, 80 all the way). That involved mostly coasting all the way back to Denver.
I also found that with DPM off, and all manual shifting, I was able to get 20.5mpg on the drive home from work, where I normally average 16.3-16.8. The mpg definitely seemed to be better when starting in 1st gear with DPM off, and manually shifting, getting up to speed quick and then coasting in 6th, and not letting the automatic sit in 5th most of the time, like it normally does...
BTW, on the first tank of gas after my Softronic tune and about 600hp, driving with PSM off most of the time and hitting 1.1 bars often, I got a lofty 6.4mpg... but worth every gallon!
I average 16.3 in highway, stop and go traffic, backroads, and city driving in my 2004 CTT.
I was able to get 18mpg average on a drive from Denver to Vail and back on a friday afternoon (no trafiic, 80 all the way). That involved mostly coasting all the way back to Denver.
I also found that with DPM off, and all manual shifting, I was able to get 20.5mpg on the drive home from work, where I normally average 16.3-16.8. The mpg definitely seemed to be better when starting in 1st gear with DPM off, and manually shifting, getting up to speed quick and then coasting in 6th, and not letting the automatic sit in 5th most of the time, like it normally does...
04-15-2018, 07:03 AM
Post pics of your fuel-consumptions
