andresh53 Posted October 19, 2011 Report Share Posted October 19, 2011 So me and the wife took a small road trip up to Abilene from San Antonio about 240 miles +/- anyway it was hard to stay below 80 on those open roads My question is what is the average MPG on the highway for everyone else I got an impressive 20 MPG the only mods I have are JLT CAT with tune and ford racing suspension thanks for your inputs Link to comment Share on other sites More sharing options...
Bassaholic Posted October 19, 2011 Report Share Posted October 19, 2011 I have the same mods and got 20mpg as well going from san antonio to alpine a few weeks ago. @85mph Link to comment Share on other sites More sharing options...
SGT0767 Posted October 19, 2011 Report Share Posted October 19, 2011 Our GT500 is stock. Depending upon who is driving, we average between 20 and 22 MPG on the highway. That is normally doing about 80 and not babying all that much. Mike Link to comment Share on other sites More sharing options...
tradde Posted October 19, 2011 Report Share Posted October 19, 2011 Our GT500 is stock. Depending upon who is driving, we average between 20 and 22 MPG on the highway. That is normally doing about 80 and not babying all that much. Mike I got up to 23 mpg on a trip from Las Cruces to Denver and back down via a side trip to the Grand Canyon. Most times I was doing 80+ when the limit was 75. What a fun drive that was. I just have the normal mods too of JLT CAI and tune, SLP axlebacks. Link to comment Share on other sites More sharing options...
oldlugs Posted October 19, 2011 Report Share Posted October 19, 2011 Driving the KR like I'm trying to get good mileage, I get about 21 on the highway and about 15 'round town. Link to comment Share on other sites More sharing options...
Bill Hamilton Posted October 19, 2011 Report Share Posted October 19, 2011 Mine's a total stock 2011 model with 16,000 miles. It's my daily driver and does a little better than 17 mpg in my normal commute. I did a 120-mile recently on secondary four-lane roads and running 62 to 65 mph averaged 25.4.mpg. Normally running 80 plus nets me 21 to 22 mpg on trips. The EPA window sticker rated it at 15 to 23 mpg and I do better on both counts without really trying. Link to comment Share on other sites More sharing options...
wanted2b Posted October 19, 2011 Report Share Posted October 19, 2011 Short trip of 200 miles. Driving 60 in 6th gear and checked the computer that said 26. I thought that was really good. About 14 in the city. Link to comment Share on other sites More sharing options...
Bill Hamilton Posted October 20, 2011 Report Share Posted October 20, 2011 I check my mileage every time I fill up and the computer is fairly right on in city driving but have noticed on trips it's usually about .5 to .7 off on the low side. In other words, if the computer says 22.5 mpg, when I do the math (miles driven divided by gallons put in tank) I get 23 to 23.2 mpg for example. Link to comment Share on other sites More sharing options...
03 DSG Snake Posted October 20, 2011 Report Share Posted October 20, 2011 20mpg cruising around 80 with Pulley, Intake, TB, tune, etc. Link to comment Share on other sites More sharing options...
Justin00Stang Posted October 20, 2011 Report Share Posted October 20, 2011 Thats about right. Before I did cams, my 07 with 3.73 gears, upper, lower, LTs, TVS, etc, would get about 18mpg due to the higher cruising RPMs. Link to comment Share on other sites More sharing options...
John Allen Posted October 20, 2011 Report Share Posted October 20, 2011 We took the '11 to Dearborn 2011 this year. From home to Mississippi river milage is 22 to 23 mpg on 91 Octane. As soon as we could get 93 Octane the milage jumped to 25. This is with cruize control at 75mph. Wish we could get 93 Octane here at home. I never check the milage in around town driving cause I'm always having to much fun and fun driving doesn't equate to efficient fuel consumption Link to comment Share on other sites More sharing options...
08ragtop Posted October 20, 2011 Report Share Posted October 20, 2011 I have a completely stock 08. I get 22 to 24 on the highway. Usually around 22 on 10% ethanol crap gas at 70mph. We got 24 using non-ethanol gas from Jerome Idaho to Oregon at 70 to 75mph. I don't get to drive 80 until I get way away from Oregon. Our speed limit is 65 mph Link to comment Share on other sites More sharing options...
Bill Hamilton Posted October 20, 2011 Report Share Posted October 20, 2011 I have a completely stock 08. I get 22 to 24 on the highway. Usually around 22 on 10% ethanol crap gas at 70mph. We got 24 using non-ethanol gas from Jerome Idaho to Oregon at 70 to 75mph. I don't get to drive 80 until I get way away from Oregon. Our speed limit is 65 mph :angry2: Aaarrrg ... Don't get me started on ethanol. 10% ethanol means 10% lower gas mileage. The power is there, it just takes more fuel to make it. It sure is keeping the small engine repair guys ( lawnmowers and powered gardening equipment) in business. I drive far and wide to find non-ethanol for my 1970 Mach 1. I'm always looking at this website : http://pure-gas.org/ Link to comment Share on other sites More sharing options...
twobjshelbys Posted October 20, 2011 Report Share Posted October 20, 2011 We took the '11 to Dearborn 2011 this year. From home to Mississippi river milage is 22 to 23 mpg on 91 Octane. As soon as we could get 93 Octane the milage jumped to 25. This is with cruize control at 75mph. Wish we could get 93 Octane here at home. I never check the milage in around town driving cause I'm always having to much fun and fun driving doesn't equate to efficient fuel consumption This is a which came first, the chicken or the egg... 91 octane is used in high altitude locations - read, mountains of Colorado and the west. The reason is that you need less due to the reduced atmospheric pressure. 93 is used where the altitude is lower. Also flat. You get better mileage on flat than in the mountains. That long stretch going up either side of I70 to the tunnels sucks gas down fast. (Unfortunately going down hill on the other side doesn't generate gas in the tank It just uses less.) Link to comment Share on other sites More sharing options...
andresh53 Posted October 20, 2011 Author Report Share Posted October 20, 2011 Thanks guys looks like I'm tracking with the rest of you Link to comment Share on other sites More sharing options...
Light66 Posted October 20, 2011 Report Share Posted October 20, 2011 08 GT500 with 18,400 miles with TVS and 3.31. rear end - 23 to 26 miles per gallon cruzing 65 to 80. Link to comment Share on other sites More sharing options...
Ray Lucca Posted October 20, 2011 Report Share Posted October 20, 2011 I'm stunned with the gas mileage you guys are getting....Really... I have a 1 year old 09 Vert. with the FRPP Cai, Procal Tune, and KR Axlebacks. 500 Rwhp, 473 Rwtq Sae on Ret's Dynojet. I took a trip and literally put an egg between my foot and the accelerator...14.8 Mpg..All Freeway at about 65-75 Mph...No Boost... 3600 miles on it. I now have Red Line 5W/50 and a Ford Racing Oil Filter installed. I still have the stock 3.31's.... Link to comment Share on other sites More sharing options...
2010KonaBlueGT Posted October 20, 2011 Report Share Posted October 20, 2011 I'm stunned with the gas mileage you guys are getting....Really... I have a 1 year old 09 Vert. with the FRPP Cai, Procal Tune, and KR Axlebacks. 500 Rwhp, 473 Rwtq Sae on Ret's Dynojet. I took a trip and literally put an egg between my foot and the accelerator...14.8 Mpg.. Something is wrong. I have a 2010 GT500 coupe with a Ford Racing Whipple 2.9L SC w/Pro-Cal (FRPP) tune, FRPP headers and Roush Extreme exhaust on it and my mileage is pretty much the same as what the car got from the factory, which is between 19-21 Hwy. My in town (City) mileage took a *slight* hit but that's probably more because I like to hit boost in 1st, 2nd and 3rd gear which takes more fuel (more air needs more fuel which gives you more power). Did you reset your Av. MPG and odometer before you tested it? How about doing it by hand, with a calculator and actual gallons/miles? If you start off with a very low MPG figure it calculates the average using that number too. That's just WAY low for the kind of driving you're doing which is why I say *something* is wrong. Either with the car or the calculation. I'd try checking it the old fashioned way, with a calculator, a trip odometer and the gas pump reading for gallons before making a final decision. It wouldn't be the first GT500 I've seen that the Drivers Information Center was off. Phill Link to comment Share on other sites More sharing options...
Ray Lucca Posted October 20, 2011 Report Share Posted October 20, 2011 I always do it the "old fashioned way". Fill it up Full, Full. Zero out the odometer, drive it until time for gas. Fill it up full, full. Divide the miles driven by the gallons filled. I just noticed the computer, don't know how to use it, I'm old.... Link to comment Share on other sites More sharing options...
John Allen Posted October 20, 2011 Report Share Posted October 20, 2011 This is a which came first, the chicken or the egg... 91 octane is used in high altitude locations - read, mountains of Colorado and the west. The reason is that you need less due to the reduced atmospheric pressure. 93 is used where the altitude is lower. Also flat. You get better mileage on flat than in the mountains. That long stretch going up either side of I70 to the tunnels sucks gas down fast. (Unfortunately going down hill on the other side doesn't generate gas in the tank It just uses less.) Once we crossed the Mississippi River and hit the 93 Octane stations, the 91 Octane didn't go away. Many stations all the way to New York had 4 grades including 91 and 93 Octains. Link to comment Share on other sites More sharing options...
twobjshelbys Posted October 20, 2011 Report Share Posted October 20, 2011 Once we crossed the Mississippi River and hit the 93 Octane stations, the 91 Octane didn't go away. Many stations all the way to New York had 4 grades including 91 and 93 Octains. At low altitudes I see 87 / 89 or 91 / 93 At high altitudes I see 85 / 87 or 89 / 91 Your locality may change the mid grade. Also, in the Colorado Front Range you will get 10% ethanol year round now. My mileage is always better with un-oxygenated gas. Just going through this very discussion on the Ford GT with the pully and tune. He supplies sea level 91, 93 and 100 tunes. Your 93 is our 91 so I could conceivably run the 91 tune with 89 (mid grade) Colorado gas. Link to comment Share on other sites More sharing options...
Moncho Posted October 20, 2011 Report Share Posted October 20, 2011 @ twobjshelbys - you make a good point on being able to run 89 on a 91 tune due to the year round ethenol here in the front range. Good food for thought. Thanks. Cheers, Moncho Link to comment Share on other sites More sharing options...
shelbypt Posted October 20, 2011 Report Share Posted October 20, 2011 This Spring to Carlisle, I got 24.8 mpg. That was early am and nice and cool. Coming home Sunday afternoon, I got 21mpg. I was impressed with that mileage from this powerful machine... Link to comment Share on other sites More sharing options...
SHELLLB Posted October 22, 2011 Report Share Posted October 22, 2011 I DONT GET MILES PER GALLON , I GET SMILES PER GALLON. LOL Link to comment Share on other sites More sharing options...
Shelbyville Posted October 23, 2011 Report Share Posted October 23, 2011 I had never checked the mileage on my Shelby (really did not want to know plus really did not care ) On the way to Dearborn checked for the first time - 19.9!!! I about flipped out :happy feet: :happy feet: :happy feet: I'm sure the rest of my fellow gas station patrons were wondering what the heck was going on. :shades: Oh - running 3.73s, CAI, KRs, 93 octane tune. Link to comment Share on other sites More sharing options...
thewheelman Posted October 24, 2011 Report Share Posted October 24, 2011 The onboard computer is always optimistic but on some 1200-1400 mile round trips, I never fail to get at least 20+ with an occasional 21 or 22 mpg on the highway. I usually set the cruise at 78 or 80. My 07 vert is stone stock. Link to comment Share on other sites More sharing options...
svt boost Posted October 26, 2011 Report Share Posted October 26, 2011 Going 80 I get 21.9 average...with the whipple Link to comment Share on other sites More sharing options...
SNKDOUT Posted October 29, 2011 Report Share Posted October 29, 2011 Ran from Phoenix to Vegas in my 800HP SS and got 19 miles to the gallon. Alot better then around town 9 mpg. Cruised the strip and only got 5. Oh well, had a blast Link to comment Share on other sites More sharing options...
05mustangman Posted October 29, 2011 Report Share Posted October 29, 2011 From Vegas back to Phoenix including a little fun on Route 66 i averaged 27-30mpg. I couldnt believe it! Thats with new pulleys, headers, full exhaust, full suspension, intake, and 315 rear tires. Link to comment Share on other sites More sharing options...
2010KonaBlueGT Posted October 29, 2011 Report Share Posted October 29, 2011 From Vegas back to Phoenix including a little fun on Route 66 i averaged 27-30mpg. DAYAM! I wish. I take it that since you were taking the old Rt. 66 you were keeping the speedo down a little? Or were you mainly on I-40? I typically run AT or just slightly above the posted limit and I don't get anywhere near 30 but just over (and around) 20. But then again, the limit on one portion of the trip through Utah has a 80MPH posted limit. Phill Link to comment Share on other sites More sharing options...
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