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Discussion Starter #1
got my mileage to improve...

after good gas, fuel cleaner additive, air filter cleaned, EXTREMELY conservative driving I went from...drum roll

22 to 23 mpg

LOL I'll just deal with the mileage and go back to regular driving that's enjoyable. from what most peeps have posted sounds about average anyway
 

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MPG goes up in the spring and fall, so you should see some gain there. Winter blend and running the heater / warming the car up eats fuel. Plus these are ULEV 2 cars so lots of raw fuel is toss down the cat to light them off, so whatch for the cold starts, they can kill your MPG in a hurry.
 

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Hahaha! That is some incredible data! I agree with you and you should go back to fun driving!
 

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I checked my mileage this past week. 14.45 gallons later, 20.5mpg :) Like any care, they don't like the cold weather variables (all that have been mentioned above).

Yeah yeah, drive it for the past couple of weeks.... got it all Winter-dirty (gasps) I did wash it yesterday, though! Can't wait for the "high heels" weather though, these silly skinny slippers are almost embarrassing ;)
 

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i cant remember if it is winter gas or summer gas,but one is supposed to give better mileage anyway? seems like we average 17 mpg with the classic r/t. i sure wish they would get rid of ethanol,we would all get better mileage!
 

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Ethanol has become the great oxymoron of our generation, imo. In a time we have become hyper-concerned with raising fleet mpg averages...what do politicians do?...they mandate ethanol which only ate up more fuel and water to produce (and arguably *more* CO2 emissions over the course of field-to-tank process inefficiencies), only to yield an mpg *hit* on pretty much all cars across the USA. Politicians are convinced they are doing "good" with such folly, but they only succeeded to do more environmental and economical harm with the half-ass implementations they mandated.
 

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Ethanol has 10% less joule content so no matter what MPG fell 3.3% when ethanol was added to the fuel. My lean-burn Civic HX would no longer go into lean burn mode and fuel economy fell about 10 to 15%. IMO everybody lost about 1 MPG on their SE since ethanol, older cars lost more. For a short while there turbo cars were able to use the higher octane, but now days many octane additives have been removed from the base stock.
 

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I've had my 2009 SE for a month now, it had 10,029 miles on it when I bought it. I've driven it twice from full to the fuel light, once I got 390 miles, the second time I got 410, I put 16 gallons +/- a bit to fill up each time...gets me about 24-25 mpg. I believe it has an 18 gallon fuel tank, so the fuel light leaves you about 2 gallons..40-50 miles? My wife's 04 Concorde gets about 26, so I guess I can't feel too bad.
It don't really matter...the car is a dream to drive..! I didn't think I would ever see cars built to these proportions again...full size doors, a hood.....see ya..........
 

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yeah, i'm averaging about 20.5 mpg. my 05 monte got around 22 mpg, but the challenger is much more fun to drive.
 

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I just traded my 2007 Jeep Grand Cherokee yesterday to a 2010 Challenger SXT. I was getting 14 liters per 100km or 16 mpg. These numbers above look fantastic.
 

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Interesting....

My 2011 is getting pretty consistent 24.7 mpg. I've gotten as high as 27, and the lowest was 21, and that was with some 'spirited' driving. It could be that my commute is only 11 miles one way, and I rarely sit in traffic or have much stop and go.

The ECO light is pretty handy in reminding me to ease up on the go pedal a bit.
 

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The best tank-fulls for me have been in the 25 to 27 MPG range, this was new before Ethanol and the stock tires with low rolling resistance (Goodyear Integrity). Average for more than two years stands at 21.5 MPG this is urban driving light to moderate traffic use A/C and heat cheap gas, sticky summer performance tires on 20" rims, and no to little hyper-mile stuff. My spirited driving is taking the S curves faster than the average car, oh and on 10% Ethanol of course. One day I'll put the stock tires on just to see how much better MPG will pickup. I use the pen and paper MPG method, how are you checking MPG?
 

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Discussion Starter #13
The best tank-fulls for me have been in the 25 to 27 MPG range, this was new before Ethanol and the stock tires with low rolling resistance (Goodyear Integrity). Average for more than two years stands at 21.5 MPG this is urban driving light to moderate traffic use A/C and heat cheap gas, sticky summer performance tires on 20" rims, and no to little hyper-mile stuff. My spirited driving is taking the S curves faster than the average car, oh and on 10% Ethanol of course. One day I'll put the stock tires on just to see how much better MPG will pickup. I use the pen and paper MPG method, how are you checking MPG?
same...miles driven by gallons used. I fill to the one click shutoff each time. I'd like to know how accurate EVIC is compared to pen and paper. some folks have been touting crazy mpg from EVIC like 30 mpg +.
 

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I had MPG computers on my last two cars, from my experience they tend to read high to really high vs actual when hyper-mile tech is used, they tend to read lower than expected when driven crazy. But yeah in general I'd get about 10% less actual MPG vs what the silly computer said with my type of driving.
 

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This week I broke the 29 mpg mark for the first time, I hope I can be consistent with it.
 

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This week I broke the 29 mpg mark for the first time, I hope I can be consistent with it.
Oh very nice? What kind of speeds/type of driving were you doing?



I doubt I'll get much above 23 with my drive environment. Will be kinda sucky with $5 gas.
 

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My usual loop is probably over 90% freeway with the speed varying from legal to a good bit above. The main thing is I try to take it easy on the hills just outside of town and anytime i know the car is gonna downshift I just manually downshift ahead of time. The big diff this time was I pumped the tires to around 35 psi. I can't say how low they may have been since I had to fill them and then run to buy a gauge.
I'll be filling up again in an hour or so, hopefully I get the same results. Cheapest gas around here is 4.04 a gal
 

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Well I didn't get the same results last fill, I was down to 27.24mpg. Disappointing but then I remembered that tank I was stuck in really bad San Francisco traffic for about 30 mins just trying to get to the freeway.
 

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i dont know what the challenger gets... but i average 14mpg in my '07 JK-U Rubicon. thats what its gotten since day-1.

week-1 with the challenger was netting 25mpg on the interstate at 80-ish.
 
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