I hit 360-418 and I shift at 3k-3.5k I drive about 65% highway 70-80mpg and 35 city 30mph-50mph. I wasn't getting that before cause my fuel sending units was messed up I was getting 280-320. It was telling me I needed fuel and it would only fill to 16 gallons. Since I know I have a 20gallon tank I knew there was something wrong got them replaced under extended Infiniti warranty. I have an 04 and now I'm getting great mph and the fuel gauge is accurate which also affects the navigation mpg.

I have fuji exhaust, jic y-pipe
blitz cone metal filter
stillen air box
z intake pipe.

I'm not stock, I hope that helps.

 

I get around 250-300 miles to the tank, that was both stock and with the test pipes and Y-pipe. I do mainly city, but it has a lot of cruising, I shift under 2500RPM and am easy on the throttle. I wish I got 420 miles to the tank!

 

How are you guys driving!

the worst I have ever gotten was 19.8MPG, that was the first fillup I ever did. Ever since then, I have yet to get less than 20MPG, the closest was 20.8MPG. I check my mileage every time I fill up. In fact, I'm so confident, I just fill up at the 400mile whether the light came on a day ago or within the hour

I live on southside in jacksonville and I have to drive to the base which is at least an 30 minute drive with some highway

 

I've had my sending unit replaced a year or two ago and it made no difference for my mileage. I still get 16-17mpg in 95% city (stop and go/traffic light) driving. My light usually comes on when I have about 4.5 gallons left, and when I'm at about 250-260 miles driven. This has been the same since I bought it.

I generally shift at 3k, and don't rev it up that often. But I've noticed no significant difference with driving styles. I do, however, rev-match my downshifts, which I'm sure wastes a bit of gas.

 

I get about 250-280 a full tank.... 400 wow nice.

 

just done 433 miles with winter mode 90% highway at 62 m/h

 

Just finished up with my first tank, just a hair over 300 Miles.

 

Got 19.2 MPG on the "economy" map. I'll stick with 17 mpg on the performance map.

 

I show I am getting between 23-28 mpg on city and highway driving. My gas light comes on super early though. And i fill up when it says I have about 60 miles left on tank. Then I fill up and it only takes 10-15 gallons. And the gas guage doesnt fully go to F it shys just under it.

 

^^I'm in the same boat as you. My light would come on, I'd fill the tank, but my gauge would just get past 3/4. It would only take 12-14 gallons. I finally got sick of filling up every time, and drove approx. 100 miles with my light on. Got a bit scared, filled up and it took 17 gallons. Now the needle almost made it to full, just below. It must have something to do with the gauge, or the sending unit.

 

Thanks man that makes me feel better than someone else has the same problem. Im gonna try and run it very low on gas and then refill it full and see if it recalibrates it.

 

Could definitely be your fuel sending unit, if you're still under factory warranty I would take it back and let them know before it completely malfunctions. They fixed mine for free.

It all depends on driving style, if you like to give it a little WOT, then yeah you're gonna be getting alot less mileage out of the tank. But its hard because we have performance vehicles and they are just asking for it. So if you're trying to be economical, accelerate slowly, but if you don't mind the price of gas then

 

yea agree with depends how you drive,

avg i hit is 325 90% highway and 10% city, 04 6mt

highest i hit with the nav stating i have 0 miles left and few feet from the gas pump, i hit 366 miles. filled to 15.8 gal

 

90% Highway 10% city, avg speed 80mph on the highway ...average per tank 385 miles...05 5AT
Mobile 1 oil and Chevron Gas...Im happy with it

 

I get with 70% city and 30% hwy around 330m using 91 fuel. I got 400m once but i did like 70% hwy and 30% city.