5.0 gas mileage
06-21-2011, 07:46 PM
#13
Join Date: Dec 2008
Location: Texas
Posts: 24
I have 7500 miles on a 5.0 with the 6-speed manual and 3.55 rear end gears. I average 19 MPG. I do about 75 on the freeway with cruise control on and the A/C (I am in Texas). I nail it a lot. If I behaved I would be btter mileage, but I didn't buy a 5.0 to behave. 
06-21-2011, 09:08 PM
#15
I have observed an absolute best of 30 MPG avg for a 100mi straight interstate trip at around 69 MPH. Little hills, mostly flat and straight for the entire trip.
I am running an 87 octane tune from Bama, have 3.31:1 rear gears.
Now, on the same trip all other times, I usually see 28 MPG avg, an occasional 29 MPG avg, and the worst I observed was 24 MGP avg.
In my DD, which comprises some rush hour stop and go and some freeway, I am averaging 23 MPG right now. And that even includes some spirited accelerations where I push the tack to 5K+ RPMs.
In city, I get 19-20 MPG avg with mostly stop and go and very little freeway.
Something I found out: Trying to grandpa shift and upshift at or below 2K RPM does absolutely nothing for your MPG. The Coyote burns just as much gas in grandpa driving as if you were upshifting to the next gear at 2500 RPM. The Coyote is meant to accelerate at that RPM range during normal DD; and can cruise at maybe 1900 RPM.
But of course, you are making weenie power at anything below 3500 RPM, so the usual saying, you have to play, and in the case of gas mileage, if you want to dance in the Coyote's best torque bandwidth, you have to be turning the engine above 3500 RPM
I am running an 87 octane tune from Bama, have 3.31:1 rear gears.
Now, on the same trip all other times, I usually see 28 MPG avg, an occasional 29 MPG avg, and the worst I observed was 24 MGP avg.
In my DD, which comprises some rush hour stop and go and some freeway, I am averaging 23 MPG right now. And that even includes some spirited accelerations where I push the tack to 5K+ RPMs.
In city, I get 19-20 MPG avg with mostly stop and go and very little freeway.
Something I found out: Trying to grandpa shift and upshift at or below 2K RPM does absolutely nothing for your MPG. The Coyote burns just as much gas in grandpa driving as if you were upshifting to the next gear at 2500 RPM. The Coyote is meant to accelerate at that RPM range during normal DD; and can cruise at maybe 1900 RPM.
But of course, you are making weenie power at anything below 3500 RPM, so the usual saying, you have to play, and in the case of gas mileage, if you want to dance in the Coyote's best torque bandwidth, you have to be turning the engine above 3500 RPM
06-22-2011, 01:03 PM
#16
2nd Gear Member
Join Date: Jul 2009
Location: Maryland
Posts: 380
Highway hyper-miling aside, on my day-to-day journeys (probably something like 70% highway/30% city these days) I tend to see 21-22mpg. '11 5.0 with 3.73's, 93 octane BAMA Street tune, and I drive the car like it's meant to be driven.
It's worth mentioning that with an aftermarket tune you will see an increase in gas mileage, assuming you aren't too busy hotrodding around with all your newfound power.
It's worth mentioning that with an aftermarket tune you will see an increase in gas mileage, assuming you aren't too busy hotrodding around with all your newfound power.
06-22-2011, 02:52 PM
#17
6th Gear Member
Anything much over 1600-1800 RPM's and you'll really begin to see a fall-off in fuel mileage. At 70 MPH/2100 RPM my 4.6L averages 23 MPG. At a steady 55-60 MPH (below 1800 RPM) I average 27 MPG; all hand-calculated, pump-to-pump. The only way to improve fuel mileage is your driving habits.
06-22-2011, 03:21 PM
#18
1st Gear Member
Join Date: May 2011
Location: Texas
Posts: 117
first off i want to say i admire ya'll sense of control when driving your 5.0. thats some crazy good gas mileage. my info board on the dash says 16.0mpg, with only a 16gal tank that would put me right at 250 miles per tank..... now i know i drive with my foot in it alot but to be cutting my gas mileagle in half?? should this be happening or do i need to take the lead out of my nike's?
06-22-2011, 03:27 PM
#19
5th Gear Member
Join Date: Mar 2006
Location: ATL
Posts: 2,955
first off i want to say i admire ya'll sense of control when driving your 5.0. thats some crazy good gas mileage. my info board on the dash says 16.0mpg, with only a 16gal tank that would put me right at 250 miles per tank..... now i know i drive with my foot in it alot but to be cutting my gas mileagle in half?? should this be happening or do i need to take the lead out of my nike's?
Take off easy, cruise at 5 over speed limit, predict when traffic slows down so you don't have to as much. When I can, I let gravity move my car. Have a friends house that is down hill, I go about half a mile with the engine at idle, but speeds reach the limit. Leaving his house neutralizes my gains.
06-22-2011, 03:50 PM
#20
1st Gear Member
Join Date: May 2011
Location: Texas
Posts: 117
You must disconnect your heart from your foot and drive it with your brain instead. Take off easy, cruise at 5 over speed limit, predict when traffic slows down so you don't have to as much. When I can, I let gravity move my car. Have a friends house that is down hill, I go about half a mile with the engine at idle, but speeds reach the limit. Leaving his house neutralizes my gains.
Take off easy, cruise at 5 over speed limit, predict when traffic slows down so you don't have to as much. When I can, I let gravity move my car. Have a friends house that is down hill, I go about half a mile with the engine at idle, but speeds reach the limit. Leaving his house neutralizes my gains.what did those 4.10 gears do to your power response and what affect did they have on your MPG's?