So, I drove my car to work all week (24 miles on interstate) and averaged 75mph. I get terrible mpg! I averaged 20.4 mpg and the entire tank! Is that normal? It says it gets 26 highway and I didn't come close to that. Any ideas?

 

Yes....75mph is past the sweet spot. She is a big engine that is plumbed for performance.

 

Ok, thanks! Making sure I didn't buy a car that had problems already! Although, strangest thing just happened! Got my windows tinted yesterday. Got home and hour ago and locked my car. I just looked outside and my driver and passenger windows were down! Why did it do that!? It's the craziest thing!

 

If you hold the unlock button on your key fob, key chain, it will roll your windows down, front windows.

 

NO WAY! Thats awesome! I'd go try but I just got the windows tinted and I'm not suppose to for 3 days!

 

Yeah, I think you sat on the remote...cool feature, but you gotta be cautious with the remote!

 

I normally average about 22 mpg on a tank of gas. I drive between 65 and 75 mph normally. My first Maxima was a 1995. I would unlock the doors with my remote and get in and notice my windows were cracked a (rolled down) a few inches. It took me months before i figured out the holding down the unlock button was rolling down the windows. Had me freaked out for a while.

 

Fuel Econ is registered at 24.3mpg @ 440 miles on full tank.

I use SeaFoam on every other full up in gas tank, plus one can in engine oil before oil change (drive about 200 miles before changing oil after).

SparkPlugs are about 35K miles new, and KnN Filter.

My average speed is about 75mph @ 120 miles round trip / day.

Try the SeaFoam treatment

 

I just drove cross country and averaged 27MPG on the interstate. Now if you commute and do some local stop and go mixed in it will lower the MPG.

 

Normally get 25-30 miles on the gallon on the interstate. 30 was the best I got, going between 69-73 on the oe tires. My new tires are more grippy, so will not achieve that mileage, may get 27 if lucky.