I took a little trip to see a Reds game last weekend. Got 26.57 MPG almost exclusively highway. '05 Sedan 6MT

 

This.

120-150 miles per tank is absurd...

 

I have 04 AT COUPE. I drive an even mix of highway and city and I average 17.4 MPG. When im not showing off my exhaust note I get about 250 a fill on 93 octane.

 

I have an 06 AT Coupe and average 16 gallon fill up = 300-330 miles

 

I get around 16 in the city -__- but I be smashinn!

 

I typically get 350 - 425..... When i'm on the highway and that gas light comes on, i know i can go at least another 120 miles before i am in trouble. The only time I had economy that low was during the winter, I had a 2 mile commute to and from work.... I got about 11mpg

 

If it's really that messed up somethings wrong... If you just gas it a lot, the best option would be an Osiris tune. You can toggle between power and economy, I heard the economy is a good boost of 3-4 mpg for most.

 

Ok so i just filled up... What i did was waited until the gas light turned on and headed to a gas station, put $64.39 in the tank that was 15.401 gallons. I waited until the gas light came back on and the difference in mileage was 224 miles so my original estimate was way off, but still... Is 14.5 MPG normal or should i take it to Infiniti and get it inspected?

 

our tank capacity is closer to 20 gallons though.

 

Even with the extra 5 gallons i would still be pretty low in the MPGs right?

 

You really are bad at math... And common sense. You can't use the number of gallons you put in BEFORE you drove it.. You have to fill it up so you have a clean start, then set the trip meter (starting at zero) and drive until you need gas. When you fill up divide the number you see on the trip meter by the number of gallons you put in the tank, making sure you fill it all the way up again. Your phone should have an icon on it that looks like a little calculator, that will help you do the advanced mathematical calculations this process requires

 

^Lol that is exactly what i did.

 

How can you accurately estimate your MPG if you don't measure the actual amount of gas you put in the tank vs the mileage you drove? Saying "I waited till the light came on and the last time the light came on it took X amount of gallons so it must have taken X amount of gallons again" just doesn't cut it.

 

I said i put 15.401 gallons in the tank.... and i drove it for 224 miles when i filled it up again. The second time i filled up i put 14.904 gallons in it, but didn't think it was relative.

 

ok then