Mileage lols

LarsD · Apr 22, 2008

Took my 91 out of town this weekend and averaged 18.7 mpg. Kinda funny since my old 89 with it's 306 and 4.10's would get 21 mpg on a regular basis. Guess I need to put the wrench to this one too.

mustangfan1990 · Apr 22, 2008

Mine gets 12 on the interstate

5.0Torx · Apr 22, 2008

i did 27-31 mpg highway from st louis, mo to hilton head, SC and back this summer. usually do about 25 though

usually 16-20 city. yipee

LarsD · Apr 22, 2008

5.0Torx said:
i did 27-31 mpg highway from st louis, mo to hilaton head, SC and back this summer. usually do about 25 though

usually 16-20 city. yipee

Pretty impressive, car all stock?

blackened88lx · Apr 22, 2008

I get 18-20 city beating the **** out of it. I rarely drive highway for long, but last time I did I got 28 mixed with a little city. I could easily get 30 on the highway if I was careful. Pretty funny that modding these cars can improve the gas mileage. I'm shooting for 40+ with the turbo.

Williams57 · Apr 22, 2008

LarsD, i don't want to sound too stupid here, but was your speedo corrected all the way on your 89? 4:10 is a pretty big gear to correct. If it wasn't it would say you had gone farther than you really had, which would be better mileage. 18 is what i just got with my 93 this weekend too, mostly around town mileage. i have gotten 21 with it on the highway before though. My car has 3:55 gears too

5.0Torx · Apr 22, 2008

LarsD said:
Pretty impressive, car all stock?

mostly. full exhaust, and i did a tune up right before i left. I was quite proud of my car, though i realize it was pretty ideal conditions so im not under the false impression that itll do that all the time. Most of the time i get like 25 highway. but its nice to know theres room for improvement!

squeak93 · Apr 22, 2008

Umm...I get like 12-15....but 351's love the gas.....

aaros · Apr 22, 2008

drove about 116 (by mapquest) miles on a 1/4 tank this weekend.
mods = intake/tb/headers,h-pipe,dumps with 2.73's
sucks in town but once i get to 2k rpm's at around 70 its cake

impulse001 · Apr 22, 2008

http://www.fueleconomy.gov/feg/2008car1tablef.jsp?id=3032

cenok is family · Apr 22, 2008

i did about 55 miles on a bit over 3 gallons in the city. thats close to 18

Darkwriter77 · Apr 22, 2008

I get about 20 or 21 MPG with the 'vert with 80% highway. If I do strictly city, it's something horrible like 16 MPG. Extra weight (being a 'vert), an AOD, and having the crappy stock '86 heads, intake, and TB don't exactly help things much.

My beat-up lil' old truck gets about 26 MPG highway, with the A/C rockin'. That's corrected mileage, though, going by ACTUAL miles and not what my trip odometer says - I drive the exact same route every single day, and it comes out to right at 64 miles round trip. Since the speedo reads like 15 MPH high at 65 MPH (and 10 MPH high at 45 MPH), it racks up miles faster than reality - it reads a round trip as being 74 miles. If I were to believe what the trip odometer says, then I'd be regularly getting 29.5 MPG!

Mustang5L5 · Apr 22, 2008

Everyone has their own little way of guessing their milage. And that's what they are...guesses.

5.0Torx · Apr 22, 2008

Mustang5L5 said:
Everyone has their own little way of guessing their milage. And that's what they are...guesses.

how ya figure?

Mustang5L5 · Apr 22, 2008

5.0Torx said:
how ya figure?

Because not everyone calculates their milage the same way and there are too many variables.

Does the car have gears? Is the correct speedo gear installed? The more teeth onthe speedo gear, the more % differential the speedo can be off. Is the odometer accurate to the distance traveled, are the tires factory size? Are the tires factory OEM diameter? Does the tank top off with the exact same number of gallons each time you fill? Is the meter on the gas pump accurate? Has it been calibrated recently?

You start doing +/_ on any of those variables and you can swing your milage up or down slightly.

Plus guys like to add 1 or 2 to everything they measure anyway

5.0Droptop · Apr 22, 2008

5.0Torx said:
i did 27-31 mpg highway from st louis, mo to hilton head, SC and back this summer. usually do about 25 though

usually 16-20 city. yipee

Similar milege here....

LarsD · Apr 22, 2008

Williams57 said:
LarsD, i don't want to sound too stupid here, but was your speedo corrected all the way on your 89? 4:10 is a pretty big gear to correct. If it wasn't it would say you had gone farther than you really had, which would be better mileage. 18 is what i just got with my 93 this weekend too, mostly around town mileage. i have gotten 21 with it on the highway before though. My car has 3:55 gears too

Yeah it was correct in my old car. The guy that did the gears changed it out and he's been doing Foxes for years. If I hammered on it a lot it would drop accordingly, 21 was with me feather footing it. When I first got the engine back in it, it would only get about 16-17 with easy driving. I was able to work it up to that 21 with a Tweecer module.

5.0Torx · Apr 23, 2008

Mustang5L5 said:
Because not everyone calculates their milage the same way and there are too many variables.

Does the car have gears? Is the correct speedo gear installed? The more teeth onthe speedo gear, the more % differential the speedo can be off. Is the odometer accurate to the distance traveled, are the tires factory size? Are the tires factory OEM diameter? Does the tank top off with the exact same number of gallons each time you fill? Is the meter on the gas pump accurate? Has it been calibrated recently?

You start doing +/_ on any of those variables and you can swing your milage up or down slightly.

Plus guys like to add 1 or 2 to everything they measure anyway

right you are. however, in my specific case, i think i was pretty accurate. the only variable could be the tires, which are stock size but not the stock crapola tires, so there may be some variation between the companies, and also the meter on the pump. I have the stock sized tires, stock rims, stock 3.08 gear, and correct speedo gear which is dead-on balls accurate. ive checked with a mobile gps unit. i was actually very pleased with how accurate it is. Oh, and i always fill the tank all the way up. i never go off the gas gauge or anything. lol THOSE are the guesstimators

SVT32VDOHC · Apr 23, 2008

I have no clue what mine gets. I don't drive it enough to care. But I do care what my damn truck gets....my 97 F150 5.4L gets like 11-11.5 per gallon. It's horrible. I need to get something else and sell my truck, I don't eve need it, considering if I needed a truck, I could borrow my Dad's, or a company truck.

Flavadave4 · Apr 23, 2008

As noted above there are alot of little variables that can add up (or deduct) from fuel milage in the end. My car seems to be in the mid 20's on the highway...My 4.6 5 speed F-150 short box gets about 17 on the highway, 14 around town which isnt too bad. I am looking at getting a Civic for the commute, I love my truck but I rarely use the bed, I have a nice retracting cover that never gets retracted. lol Somthing that gets 30mpg will be nice.

Mileage lols

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5.0Torx

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