Update, just filled the tank and now I am achieving 24.9 mpg that's up .5. I know some of you might not care but I do cause I'm living paycheck to paycheck and that's extra duckets in the bank.

 

https://g35driver.com/forums/g35-sed...s-mileage.html

Just recently I put 87 and my overall mpg has gone up. With 91 I was averaging 20.8 mpg. The 87 is getting me 23.2 mpg. I did notice that my mpg in the city with the 87 is worse than the 91 but freeway cruising (65mph -70mph) on 87 is much better. I do 40% city / 60% freeway. Only mods I have are the Stillen intake, z-tube, coupe mid, grounding kit, lowered and light weight Rays 350z track wheels

 

Not bad, I hit 24.6 every week driving back and forth to work, 90% highway that has a few hills. I actually find the G to be better on gas on the highway than my girlfriends 1.8L Pontiac Vibe because of the gearing.

 

That's what's up!

 

If you keep your foot out of it, these cars aren't too bad on the highway.

I can do around 26-27 mpg with cruise control taking it easy. I am bone stock running 89 octane. I've calculated that out many times and keep track, so it's a pretty accurate number and matches my NaVs display as well.

I also just got 60,000 miles out of a set of tires mainly because I just cruise endlessly on highway. I can prob get another 5k but winter is coming and I need tread.

Minute I get off the highway, my mileage drops like a rock.

 

Yeah that's awesome maybe I'll have to try 89 ron next tank or so. I know I'm needing some new tires and I'm nearing my oil changed in the next weak so I'll def kept an update.

Keep the mpg's coming in!

 

I noticed no different in mpg between 89 and 93 octane.

HP might be another story...but my car is a commuter.