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gas millage poll please...

Whats our gas millage? Full tank average (premium) - example: 12gal./250miles=20.83

  • 30+ mpg average - STOCK to 300HP

    Votes: 7 5.6%
  • 25-30 mpg average - STOCK to 300HP

    Votes: 19 15.2%
  • 20-25 mpg average - STOCK to 300HP

    Votes: 29 23.2%
  • 15-20 mpg average - STOCK -300HP

    Votes: 22 17.6%
  • UNDER 15 mpg average - STOCK to 300HP

    Votes: 3 2.4%
  • 25+ mpg average - 300HP+

    Votes: 8 6.4%
  • 20-25 mpg average - 300HP+

    Votes: 13 10.4%
  • 15-20 mpg average - 300HP+

    Votes: 11 8.8%
  • 10-15 mpg average - 300HP+

    Votes: 4 3.2%
  • UNDER 10 mpg average - 300HP+

    Votes: 1 0.8%
  • UNDER 27.5 mpg - OTHER then standard fuel (ie. E85)

    Votes: 6 4.8%
  • OVER 27.5 mpg - OTHER then standard fuel (ie. E85)

    Votes: 2 1.6%
  • N/A - don't daily drive (track vehicle only)

    Votes: 0 0.0%

  • Total voters
    125

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I get usually 25.5-27mpg on a stock 99 GSX with over 205K on it. Mostly going 75-85mph.
 
Work trip yesterday, 310 miles (14 gal. tank is in the 2g's I believe) doing 78-87 mph most of the way with a bit stop & go due to contruction, traffic, & lights.

I get excited when I get over 210 per tank while acting a ass & boosting frequently. I do notice a drastic decrease in mpg when boosting hard. But 5 lbs doesn't seem to affect much when city driving jumping from light to light.

Depends on a lot though. I drive an automatic & i try to stay in 2nd gear when city driving under 40 mph.

MPG depends on Boost Leaks, driving habbits, & what condition your o2 sensors are as well. I bet with a great economy tune, we could get a record high for mpg's for DSM's. :thumb:
 
I actually keep track of my gas mileage with every tank. Here's how my driving usually pans out.
I have three things working against my gas mileage - AWD, turbo, and automatic transmission.

Highway avg. - 27mpg
City avg. - 18mpg
Daily avg. - 23mpg

Highway tree hugger - 35mpg
Lead foot city driver - 12mpg

1/4 pass - <2mpg

A tank usually lasts me 310 miles if I run it until the light comes on and takes 13.5 gallons when I fill it. I've rolled it past 400 miles on a few occasions.


My sister used to have a GS. She would get about 38mpg daily driving.
 
I'm getting 25-30 mpg with bad wheel bearings, a bad rear differential, bad alignment, pre-turbo exhaust leak, unplugged O2 sensor, and some crazy phantom knock.
 
How many of you guys that get 30+ mpg are running at least 8.5:1 compression? I find that my 1gs get about 30% less mpg than my 2g did. This is with both 1g cars running stock 7.8:1 compression.

I am looking at dropping a set of EVO 9 pistons on 1g rods into my motor if I cant find a stroker block and crank on a junkyard around here. I have allready searched for 2.0T blocks with no luck.
 
9:1 here. Increased mileage on the 2g could be other factors too like aerodynamics and OBD2 tuning.
 
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