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I'm at 64.9 mpg for my 25 mile best. I've routinely gotten in the low 60s for the 25 mile average, but only if I'm running non bio.
Not bad for a 3500 lb car.
 

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Fairplay to Bailey, Colorado

IMAG0275.jpg

My best "flat" 25 mile fuel economy is just over 60 MPG.
 

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My best 25-mile score is 62.8 MPG so far, this was on a trip from Plain City, OH to North Salem, IN and the flat lands up there... I also set my best 500- and 50-mile scores during that trip with the 500 at 47.7 MPG and the 50 at 58.3 MPG. But hand calculated I have always seen better MPG than the trip computer shows...
 

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In mountains could be partially due to elevation changes ? :not_worthy:
It was but it wasn't all downhill. That run was from the Shell station in Fairplay to the Conoco in Bailey. While a lot of downhill there are two passes (Red Mountain Hill and Kenosha Pass) between them I was above 50 MPG at the top of Kenosha which is about the mid point on that segment. That's why I also posted that I've seen ~60 MPG on "flat" ground for 25 miles.

About a year and a half ago I drove from my home on the south side of Denver to the University of Wyoming in Larimie, WY and back. I took the same route in both directions which eliminated elevation changes in the fuel economy calculations and still ended up on the high side of 52 MPG for the day.

The ECO MT really, really likes altitude and hills. I get 1-3 MPG improvement in overall fuel economy in Colorado than I do when driving the car in the east.
 

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I only had my 14 eco 6 speed manual for 22k miles, as I recall it seemed a bit more sensitive to speed than my diesel does on highway. If I drove 65 instead of 75 there was a big difference as I recall. There is a difference in the diesel as well but doesn't seem as much. Plus I got by on 87 octane and the car ran well for me.
 

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My best 25-mile score is 62.8 MPG so far, this was on a trip from Plain City, OH to North Salem, IN and the flat lands up there... I also set my best 500- and 50-mile scores during that trip with the 500 at 47.7 MPG and the 50 at 58.3 MPG. But hand calculated I have always seen better MPG than the trip computer shows...
I would anticipate yours getting better with more miles. I lost my eco averages when they did my recall stuff, I was mid 60s for 25 prior to being reset, now it shows 3.2 or something insane, the computer got all confused while doing a manual regen with 3000 rpms sitting in place for I don't even know how long, weird to see a engine run that fast sitting hooked up to a laptop and in park. I don't drive fast on a regular basis, but I am guessing 3000 rpms steady must be 95 mph, guessing it was close to an hour doing that, I stood there for 10 min watching and no tech in sight.. I don't really know how it takes.
 

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I would anticipate yours getting better with more miles. I lost my eco averages when they did my recall stuff, I was mid 60s for 25 prior to being reset, now it shows 3.2 or something insane, the computer got all confused while doing a manual regen with 3000 rpms sitting in place for I don't even know how long, weird to see a engine run that fast sitting hooked up to a laptop and in park. I don't drive fast on a regular basis, but I am guessing 3000 rpms steady must be 95 mph, guessing it was close to an hour doing that, I stood there for 10 min watching and no tech in sight.. I don't really know how it takes.
10-4 we'll see, we have about 18,000 miles on it now... won't be going on more big trips until the event season kicks off again toward the end of April when we will be driving up to Indy for the Diesel Ultimate Callout Challenge Event then out to NC for the Rudy's Truck Jam the next weekend and on and on through the end of the summer...
 
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It was but it wasn't all downhill. That run was from the Shell station in Fairplay to the Conoco in Bailey. While a lot of downhill there are two passes (Red Mountain Hill and Kenosha Pass) between them I was above 50 MPG at the top of Kenosha which is about the mid point on that segment. That's why I also posted that I've seen ~60 MPG on "flat" ground for 25 miles.

About a year and a half ago I drove from my home on the south side of Denver to the University of Wyoming in Larimie, WY and back. I took the same route in both directions which eliminated elevation changes in the fuel economy calculations and still ended up on the high side of 55 MPG for the day.

The ECO MT really, really likes altitude and hills. I get 1-3 MPG improvement in overall fuel economy in Colorado than I do when driving the car in the east.
Impressive, Obermd!!! Did you ever get a chance to do a check from Eisenhower to the twin tunnels?
 

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Impressive, Obermd!!! Did you ever get a chance to do a check from Eisenhower to the twin tunnels?
Unfortunately not. I did take a road trip this fall and managed 49.5 MPG over 500+ miles through some serious mountain passes, including the one between Creede and Lake City where I had to use 1st gear going up and coming down due to the steepness and sharp turns. http://www.cruzetalk.com/forum/27-fuel-economy/177089-she-likes-mountains.html.

Here's my report going up to the University of Wyoming: http://www.cruzetalk.com/forum/27-fuel-economy/114201-eco-mt-65-mph.html. I have corrected my earlier post in this thread - 52 MPG, not 55 MPG. I do remember hitting I-25 on the way back at 60 MPG because of the long downhill stretches on US 287. From that thread:

25 mile best: 2.4 L/100 KM => 98.0 MPG with possible range of 96.0 to 100.1 MPG
50 mile best: 3.0 L/100 KM => 78.4 MPG with possible range of 77.1 to 79.7 MPG
 

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I would anticipate yours getting better with more miles. I lost my eco averages when they did my recall stuff, I was mid 60s for 25 prior to being reset, now it shows 3.2 or something insane, the computer got all confused while doing a manual regen with 3000 rpms sitting in place for I don't even know how long, weird to see a engine run that fast sitting hooked up to a laptop and in park. I don't drive fast on a regular basis, but I am guessing 3000 rpms steady must be 95 mph, guessing it was close to an hour doing that, I stood there for 10 min watching and no tech in sight.. I don't really know how it takes.
They say you should do an oil change after a manual regen due to it "cooking" the oil, but I never have. I've not had any ill effects as a result.

OK. You guys made me go out and look. I always have mine set on the 500 mile best trip. Here is my best 25 miles . . and yes, mountains play a huge part in it.
View attachment 214786
I think that's the record for a diesel! (Your other picture that didn't quote, that is - over 90 MPG)
 

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Discussion Starter #17
I improved my 25 mile mile a bit. For the record, I'm using Interstate 19 between Tubac and Tucson, which is has an elevation drop of about 450 feet spread over 40 miles. Rarely is there any wind of note. I set the cruise control to 60 and pumped of those tires to 43 psi.

DSC03170.jpg




Worth nothing is that I have to stop at the Border Patrol Checkpoint on I19, and that will drop my average a bit.
 

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Discussion Starter #20
BradHerr-
I know you've made some serious mileage-maker trips. Low 60s is par for the 25 mile run in my experience, too. To me, that's about the about the cheapest driving that can be had.
 
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