Since i'm taking my car on an 850 mile road trip to denver (moving) i decided to see how my gas mileage is on the highway. I mad the 200 mile drive to my dads and only used half a tank of fuel! That means i'm getting about 25 miles to the gallon (assuming that half the tank is 8 gallons).

I recnetly changed the fuel filter and the O2 sensor, you guys might want to give it a shot if you're getting bad gas mileage. Oh, and i have an SAFC and while driving at 80mph it reads a change of -6.2. That's probably helping too.

 

dam thats good mines 17-20mph im completly stock and jus replaced the plugs fluids etc (have been drivin pretty hard in this nice weather though lol)

 

that's about as good as they get stock. Some lean it out some with an S-AFC, considering the N/A runs a little rich stock so you can yet gain some there.

 

Crap you have an AFC.......!

Make sure your tires are well inflated.

 

Well the car isn't completely stock. It has no cats and cone intake...i'm sure i could lean it out more but it's not tuned so i fear blowing something. 25 mpg is good enough for me.

 

I recently turned 26 @ 75 in an S4 street port with stock ECU and exhaust during a 600 mile road trip. FC's can be economical!

 

Oh man 26 mpg?!?!

I'm so jealous. I only get 16 mpg if I'm lucky.

 

I get 29mpg in my '87 sport, got 31mpg recently in my GTUs from Ohio to New york.

 

I'm not sure of the mpg but I did a 300 mi trip on a streetported S5 TII with cone filter and I only used a little more than 3/4 of a tank...

 

my na see 25 to 26 on the high way...or some times less...depends on the speed

 

If you want better mileage-premix 75-80 to 1
Use the walmart stuff it's dirt cheap.
Should be able to pickup at least 5mi/gal.

 

My mom's '03 V6 accord gets 27-28 on the freeway.

Our '94 Mazda MPV gets 20 freeway. Probably 21-23 when all the tires aren't 10psi below spec.