27+ MPG on the highway in 2011 5.0 GT 6MT
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27+ MPG on the highway in 2011 5.0 GT 6MT
I have seen comments in numerous threads about folks doubting the mileage claims of members who say they get 24-26mpg on the highway. I believe them 100% after taking pix of my commute to work (about 60 miles, 59 as shown on the pix below just getting on/off the highway.
![](http://i846.photobucket.com/albums/ab29/ace72ace/iPhone160.jpg)
![](http://i846.photobucket.com/albums/ab29/ace72ace/iPhone161.jpg)
![](http://i846.photobucket.com/albums/ab29/ace72ace/iPhone162.jpg)
![](http://i846.photobucket.com/albums/ab29/ace72ace/iPhone163.jpg)
For the sake of full disclosure, I was trying to get maximum MPG numbers by shifting into neutral where ever possible on long downhills, and when approaching the 1 toll plaza on my route. Doing this pads the overall number by a full MPG by my guestimation.
Note the mixed mileage rating of 23mpg on pic 1 justbefore getting on the highway and resetting it. Could I have 'faked' the results in this post by just resetting the MPG meter just before getting off the highway? Of course I could, but I didn't. So you can believe it or not, but it is possible to get this kind of MPG with your 100% stock 5.0 6MT.
-ace72
![](http://i846.photobucket.com/albums/ab29/ace72ace/iPhone160.jpg)
![](http://i846.photobucket.com/albums/ab29/ace72ace/iPhone161.jpg)
![](http://i846.photobucket.com/albums/ab29/ace72ace/iPhone162.jpg)
![](http://i846.photobucket.com/albums/ab29/ace72ace/iPhone163.jpg)
For the sake of full disclosure, I was trying to get maximum MPG numbers by shifting into neutral where ever possible on long downhills, and when approaching the 1 toll plaza on my route. Doing this pads the overall number by a full MPG by my guestimation.
Note the mixed mileage rating of 23mpg on pic 1 justbefore getting on the highway and resetting it. Could I have 'faked' the results in this post by just resetting the MPG meter just before getting off the highway? Of course I could, but I didn't. So you can believe it or not, but it is possible to get this kind of MPG with your 100% stock 5.0 6MT.
-ace72
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Nice!
How is your car optioned as far as the axle and tires/wheels?
I have yet to do this well on MPG with my car but I bet with the standard 3.31 axle and the reduced friction of the all season tires (I have the Brembo package with the wider/summer only tires) that this is entirely believable.
Nothing wrong with coasting...you're turning your car into a hybrid (energy stored in the car's mass rather than a battery).
It's better if the car is off entirely but that's not advisable since you'll lose steering assist and brake boost.
How is your car optioned as far as the axle and tires/wheels?
I have yet to do this well on MPG with my car but I bet with the standard 3.31 axle and the reduced friction of the all season tires (I have the Brembo package with the wider/summer only tires) that this is entirely believable.
Nothing wrong with coasting...you're turning your car into a hybrid (energy stored in the car's mass rather than a battery).
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I believe it! I have an AT & I'm getting 65 MPH-26 MPG & going 70 MPH-24 MPG.
I just tried a tankful w/o using my cruise.
On cruise going 214.4 miles on 91 octane I averaged 19.1.
Going w/o cruise going 248.5 miles on 93 octane I averaged 18.8.
I am not a good driver not using cruise! I can't just coast going downhill. I just w/o thinking keep it @ speed limit. Even if 1 MPH slower. I'm using cruise from now on!
I'm not big on getting better, way I see it is better I get the more I can drive a month! I set aside for gas for month.
I just tried a tankful w/o using my cruise.
On cruise going 214.4 miles on 91 octane I averaged 19.1.
Going w/o cruise going 248.5 miles on 93 octane I averaged 18.8.
I am not a good driver not using cruise! I can't just coast going downhill. I just w/o thinking keep it @ speed limit. Even if 1 MPH slower. I'm using cruise from now on!
I'm not big on getting better, way I see it is better I get the more I can drive a month! I set aside for gas for month.
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Find a long enough stretch of downhill road and you can make that dash readout go even higher but that doesn't mean that is the actual fuel economy number you will get when you fill the tank and calculate the MPG.
The actual MPG for a tank of gas is what really matters, not how high you can make the dash readout get up to.
The actual MPG for a tank of gas is what really matters, not how high you can make the dash readout get up to.
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Find a long enough stretch of downhill road and you can make that dash readout go even higher but that doesn't mean that is the actual fuel economy number you will get when you fill the tank and calculate the MPG.
The actual MPG for a tank of gas is what really matters, not how high you can make the dash readout get up to.
The actual MPG for a tank of gas is what really matters, not how high you can make the dash readout get up to.
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Ltngdrvr, kinda hoping you'd say that. Of course we check mpg on flat hwy. It reads the highest then, why wouldn't you? I know it's best to do the math when you get gas. But you mean to say in 2011 with all the computer advances that has been made, the MPG one isn't correct? I'm not that smart & only go by my common sense.
Once more, I have no idea what I'm typing/talking about!!
Once more, I have no idea what I'm typing/talking about!!
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Ltngdrvr, kinda hoping you'd say that. Of course we check mpg on flat hwy. It reads the highest then, why wouldn't you? I know it's best to do the math when you get gas. But you mean to say in 2011 with all the computer advances that has been made, the MPG one isn't correct? I'm not that smart & only go by my common sense.
Once more, I have no idea what I'm typing/talking about!!
Once more, I have no idea what I'm typing/talking about!!
That is the number that really matters, the average economy for the tank of gas, not just what it does for a time while rolling down the highway.
Back when I drove an 18 wheeler, I could get the dash fuel economy readout to go up to 99 mpg when going downhill but that sure wasn't the real average fuel economy for an 80,000 pound truck.
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Originally Posted by eliyarbrough
Ltngdrvr, kinda hoping you'd say that. Of course we check mpg on flat hwy. It reads the highest then, why wouldn't you? I know it's best to do the math when you get gas. But you mean to say in 2011 with all the computer advances that has been made, the MPG one isn't correct? I'm not that smart & only go by my common sense.
Once more, I have no idea what I'm typing/talking about!!
Once more, I have no idea what I'm typing/talking about!!
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I have seen comments in numerous threads about folks doubting the mileage claims of members who say they get 24-26mpg on the highway. I believe them 100% after taking pix of my commute to work (about 60 miles, 59 as shown on the pix below just getting on/off the highway.
![](http://i846.photobucket.com/albums/ab29/ace72ace/iPhone160.jpg)
![](http://i846.photobucket.com/albums/ab29/ace72ace/iPhone163.jpg)
For the sake of full disclosure, I was trying to get maximum MPG numbers by shifting into neutral where ever possible on long downhills, and when approaching the 1 toll plaza on my route. Doing this pads the overall number by a full MPG by my guestimation.
Note the mixed mileage rating of 23mpg on pic 1 justbefore getting on the highway and resetting it. Could I have 'faked' the results in this post by just resetting the MPG meter just before getting off the highway? Of course I could, but I didn't. So you can believe it or not, but it is possible to get this kind of MPG with your 100% stock 5.0 6MT.
-ace72
![](http://i846.photobucket.com/albums/ab29/ace72ace/iPhone160.jpg)
![](http://i846.photobucket.com/albums/ab29/ace72ace/iPhone163.jpg)
For the sake of full disclosure, I was trying to get maximum MPG numbers by shifting into neutral where ever possible on long downhills, and when approaching the 1 toll plaza on my route. Doing this pads the overall number by a full MPG by my guestimation.
Note the mixed mileage rating of 23mpg on pic 1 justbefore getting on the highway and resetting it. Could I have 'faked' the results in this post by just resetting the MPG meter just before getting off the highway? Of course I could, but I didn't. So you can believe it or not, but it is possible to get this kind of MPG with your 100% stock 5.0 6MT.
-ace72
So your actual mpg may be even better than you think.
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Last edited by Double-EDad; 5/13/11 at 05:10 PM.
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See, I thought that meant the readout wasn't accurate. I only fill mine up. I check it every tank. I've got from like 17 to 25, maybe? I was kinda confused, my bad!!
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That sounds about right, I cruised to sacramento and back 340ish mile round trip, measured at the pump 25.89. I was thrilled it got advertised mileage... this was cruising between 65 and 70 the whole way mostly flat hwy miles.
Manual trans, 3.73s, stock 5.0
Manual trans, 3.73s, stock 5.0