From a recent trip... Mainly from chicago to denver to northwest corner of NM, back to denver, back to chicago. All highway, spirited driving in the mountains/CO backroads. Very tame on the way back (65-75 on the interstate) with the cruise on.



Best indicated on the car's display - reset after each fillup.

 

Between 15 & 15.2 ;(
Mostly city driving. Short freeway trips here & there, no true highways here in Southern California

 

So I can't figure out wtf is wrong with my car but my mpg has dropped slowly. I use to get around 17-18 (LA & OC driving) and now Im at around 14. Any ideas?

 

Was 19-20 when I first bought it in March, after intake and test pipes, I get a solid 22 and I drive mixed highway/city and have a very spirited driving style : )

 

I get around 20-23 mpg low of 18 mpg .. 2011 IPL auto tranny

actual tank fill up measured mpg. NOT computer.

Im in the hills of VT and NH. the weight with hills kills the mpg. on the flats on the highway mpg goes up a lot. ETOH also screws with mpg.

I keep a log and will post average actual mpg later. I'm at 12K miles now. I want the auto tranny TSB- as it hunts for gears. Wish I got a std ... but such is life. I can live with the auto..

 

Just had mine for three weeks but only getting 19.2. Of course, you don't buy an Infiniti for the gas mileage.
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2011 G37x Sedan/Premium Pkg/Smokey Quartz/Cream Leather

 

I feel like my MPG is just dependent on how many times i feel like smiling. If i drive responsibly i can avg around 24-25. Spirited driving gets me in the mid teens.

 

got over 28mpg on 2 400 mile road trips (half ~65mph interstate, half ~55mph 2 lane roads)

 

27.7 mpg (computer) from Nashville to Chicago, going between 70 and 80 mph. I was pleasantly surprised.

 

just clocked 24mpg driving from sf to la and the same on the way back...god this is pathetic mileage

 

I picked my G37 end of May, and this is my combined MPG so far:
19.3 (first week - getting to know the car)
21.6
21.8
21.9
21.5
21.6

So for the last 1000 miles or so, I am getting between 21-22 MPG. The 2011 Civic Si sedan was giving me an average of 26 MPG, so given the larger/heavier/more powerful G37, that is not too bad.

 

Got me a 2013 G37S sedan and currently have about 2500 miles. All stop and go morning traffic, 0-65 mph for about 30-45 mins Mon-Fri. And I am avg. (computer rating) 20.9mpg. Not too bad considering I am in traffic for most of the time. I should do what JohnInNH did and measure based on fill up.

 

Just got my '13 G37S 6MT sedan just under 1500 miles. Been driving it nicely for break in. Drive mostly around Ann Arbor and 2 lane country back roads. So far 26.8 mpg.

 

Last week I bought a clean 2010 G37xS with ~58k miles. I filled the tank for the first time after driving 293.8 miles (~85% highway). The computer estimated 23.2 MPG with an average speed of 40.9 MPH and predicted 128 miles until empty with the gauge showing about 1/3 of a tank remaining. It took 12.516 gallons to refill the tank for a calculated average of 23.47 MPG.

I just filled the tank for the second time after driving 378.5 miles (~90% highway). The computer estimated 24.9 MPG with an average speed of 49.1 MPH and predicted 91 miles until empty with the gauge showing about 1/4 of a tank remaining. It took 15.095 gallons to refill the tank for a calculated average of 25.07 MPG.

Below is my Fuelly "badge" which will automatically update as I continue to track mileage. See G37 Sedan averages for comparison.

 

Just got a 2012 RWD and im not an aggressive driver at all, im getting about 30 mpg on the interstate and 20 within the city. I will add that my 04 g35x would get 22 mpg combined and slowly decline to about 19 mpg, after an oil change she was right back at 22 mpg like clock work.