I have been doing a little test regarding gasoline in mpg with my car. I drove the car w/o going over 2k rpm's and got 27.98 mpg city. Now I will do the test highway for comparison purposes..........

 

Good luck! Your car will be carbon locked in no time and you will have defeated your purpose.

 

 

damn 27.98 in city??? For me it's impossible.
I was happy like a baby, when i drove to richmond this saturday and got 26MPG

 

carboned locked whats that?????

 

just a no no comment.

 

im serious what is it?

 

what? i only get around 21

 

geez, when i drive regularly, shifting at 3k, with even a few runs up to redline in 2nd gear, i get 30....2k rpms is just insane though...it seems like that would do more harm than good, so what's the point?

 

I drive about 50 miles a day 90% highway (75-80mph) and with Sunoco 93 i get 27.4, with 89 i get a lousy 23.3.....

 

you get 30mpg city driving
i want your car!

 

Woa hold on... I thought for a while people were gettin like between 21 and 24 at best.... What is this 30 stuff? I must be missin somethin lol cuase I'm getting jealous...

 

Once again....we have a thread that shows gas mileage is essentially driving style dependent

 

obviously my car is a freak or something, because i ALWAYS get 30...it never fails...the lowest i've gotten so far was either 25 or 26 (i can't remember) and that was right when i installed my GAB, and on that tank of gas, it was very rare when i didn't take it up to redline while accelerating....and anyways, according to nissan, our 6-speeds are supposed to get 28 and autos are supposed to get 26..i haven't heard of many people doing that...one time, i tried limiting my 'spirited' runs, and shifted at 2800 and got 36....anyways, there have been countless debates on this very topic in the past and here are some of them:

http://forums.maxima.org/showthread....hlight=mileage
in this thread, puppet did the work for me..see post #4...

 

Yes, that is very true but don't u agree that no matter how u drive it is very weird for a maxima to be reaching the high high 20's low 30's range?

 

i say it is very wierd for any V6 to get high 20's

 

Well so far my test is working.. I'm getting 24 so far with 1/4 of a tank left... so will see. As for driving at 2k.. look at your speedometer and will 60+ at 2k rpm... what wrong with driving my car at that speed.........think about it....

 

I hope your not all going by the MPG gauge ... lol

 

not me.. those MPG gauges never work properly....... also mine didn't come with it

 

Not at all. The 3.5L in my '97 Intrepid was getting high 20's.

 

There's nothing wrong with cruising at 60 @ 2K, but to be shifting @ 2K in every gear, that's not what I bought my car for.

 

60mph@2100 precisely

 

I bet everyone is using different methods to get the MPG.

 

Is there a way to fix the MPG gauge, It alwasy says like 24-26MPG but when i calculate it, it comes to about 20-21....Why is that?

 

then how are you calculating intermediate gas mileage?

i calculate my mpg by resetting the trip guage everytime i fill up and capturing how much i put in between, then do the math. so if i reset my guage the last time i filled up and i got 311 miles on the trip guage, the next time i fill up i capture how many gals i put in, say it was 14.5 gals. so 311/14.5 = 21.45mpg.

there's no way i know of to capture mpg between hwy and city on the same tank.

i have a very hard time believing a stock max can get close to 30mpg in mixed driving. maybe on long highway trips, or 95% highway driving with no stop and go rush hour traffic.

 

My 00 automatic GLE has never got below 21 and I average about 25. the most i ever got was on a trip to canada from Ocean Shores Washington, and i got 29mpg. That was with 5 people in the car and cruising around 80 and playing around with the gas pedal.

 

very well said...this is how you **SHOULD** be calculating your mileage....not by the gauge

 

yea and just let the pump auto shut off, don't try topping off to get perfect 00's....but i guess that's a negligible amount.....

 

I disagree! To get any handle on mileage, you should top the tank right up everytime so you are comparing apples with apples. Pumps shot off at different times. I typically can fit in quite a bit of gas after the pump initially shuts off, probably almost 3/4 gallon.

 

you know..i really don't do that anymore, because the first time i ever filled my car up, i tried topping it off, and it was so full that the gas started coming out at me, and it was almost immediate....i don't want that to happen again, so i just don't worry about topping it off...but i think that it's safe to say it doesn't matter, because if you don't top it off every single time you fill up, it will be at generally the same level so you are, in fact 'comparing apples with apples'

 

Miles / gallons.. Hello simple calculation........ 2nd grade math...

 

so how are you calculating mpg city as stated in your first post?

 

MPG city = miles driven/gallons consumed

MPG highway = miles driven/gallons consumed

MPG city/highway = miles driven/gallons consumed

See its simple!

 

his point was that different pumps at different stations shut off at different times, so while you know how much you just put in the tank, you don't know if the tank is as full as your previous fill up ... which could make your calculate gas mileage incorrect.

 

how do you measure gals consumed? the reading from the computer is off to begin with so that's innacurate. and lontar says he doesn't have a trip gauge to show gals.

 

God help me please...... Miles driven/gallons... what is so difficult about this.....
I take the miles driven and divide them by the gallons paid at the service station. It is not a 100% acurate but it can give you a +- of how your car is doing. I spend during the week 100% in Hgwy and in the weekend is a 100% city....

 

you could have said that a couple posts earlier. everything else you've said before was clear as mud on how you're measuring the difference between city and hwy mpg.

for all we know you were mixed driving and doing some bassackwards math to differentiate hwy from city mpg.

 

it's not supposed to be 100% accurate but most pumps actually shut off relatively the same.....it's car dependant. nearly all german cars shut off exactly at the very very maximum capacity. if you even try topping off you'll get spillage. japanese cars, from what i've seen, can be topped off with ease.. but the fact that every time i fill up i pump nearly the same amount despite being at different stations tells me that the "different shut off" time is totally negligible.

 

I will have to contact a Math professor so he can explain how Miles driven/ gallons will be.....

 

exactly...the 'top off' value is so negligable that it doesn't effect the calculated mpg...and if you don't top it off every single time you fill up, it will be even less of a difference since you're doing the same thing every time...

It's not that we don't understand HOW to calculate mpg (hence the name...miles per gallon) it's just that you made it very unclear earlier as to how you were doing so, because you stated that you were at half a tank and getting so-and-so mpg...but if you were at half of a tank, how did you know how many gallons you had consumed at that moment? our gas gauges give very rough estimates on how much gas we have left, so if the gauge says 'exactly' half tank and you have a 20 gallon tank, you don't necessarily have exactly 10 gallons left...

EDIT: here is what i'm talking about:
and my bad, it was 1/4 tank left and you said you got 24....that is what we were questioning you about...if you had 1/4 tank left, how did you know how many gallons of fuel had already been consumed?