With rising gas cost, perhaps a little change in driving habits could make your full tank lasts a bit longer.
Having the Nav. system helps a lot for tracking. Cruise control is a great way to steady your speed (below 70MPH) and responsible car maintenance. AC also a factor. Lately I get 24.5 MPG in mixed driving by always keeping RPM's under 3000.

 

wrong section.
i get 18 mpg avg.

 

Just over 20mpg over 37K miles.

 

17 avg in my FX.

 

right between 19-21... just cruzin!!!

 

I get 17-18 typically in my 1998 Maxima with 125K, but I get about 24-26 hwy. I proudly drive my Maxima aggressively too.

 

converted to US about 17 mpg combined and 26 highway

 

I've noticed that no matter how hard you try, MPG won't improve. Still getting about 300/tank. Not very good and Infiniti falsely advertised their claims.

 

I get anywhere between 290-300 miles per tank so go figure. I also noticed that when i filled up in a local somewhat "cheap" branded gas station my gas only went 210 miles!!!!! and i drive the same. I did not race or drive "spirited" during that tank. I refilled with Chevron and i got 299 out of last tank so gas matters as well. Look at what Shell did back when gas was scarce, a few people needed to get their fuel gauge checked and recalibrated because of shell and their fuel additives!

 

19-20 mpg constantly

 

275-295 usually every tank. But I need to feel some air in my tires so that'll probably give me a few more miles.

 

260 every tank.

 

not a whole lot 16 to 19 mpg

 

250 a tank..

 

All City=14-15
All Highway=25