View Poll Results: What's your gas milage on your Super Coupe/Xr7

Voters
302. You may not vote on this poll
  • 15 or under

    48 15.89%
  • 16

    25 8.28%
  • 17

    17 5.63%
  • 18

    28 9.27%
  • 19

    25 8.28%
  • 20

    40 13.25%
  • 21

    19 6.29%
  • 22 or over

    100 33.11%
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Results 61 to 75 of 90

Thread: What Kind of Gas Milage are you getting

  1. #61
    Join Date
    Aug 2005
    Location
    Paoli Indiana
    Posts
    4,551
    Back when i orignaly voted i was getting high 20's... now i get 16/18mpg
    93 SC Red Auto 111k
    2013 Shootout Bracket ET First Place
    2015 Shootout Car Show Honerable Mention
    2016 Shootout Mod-1 First Place
    4.2, 2.3 Whipple, 3.73s AOD
    307rwhp 12.70@107.2 (MPX)
    395rwhp Whipple 11.741@117.5mph

  2. #62
    Join Date
    Jan 2006
    Location
    STL, IL / Harker Heights, TX
    Posts
    1,410
    Quote Originally Posted by Jacob_Royer View Post
    Back when i orignaly voted i was getting high 20's... now i get 16/18mpg
    I'm right there with you bud.

  3. #63
    Join Date
    Apr 2003
    Location
    Kennesaw, GA
    Posts
    61
    I have no idea since my odometer/trip don't work. It's probably less stressful not knowing anyway.

  4. #64
    Join Date
    Apr 2002
    Location
    Norcross, GA
    Posts
    3,305
    When my drag racer was stock it would get 29-30 cruising on the interstate at 75. Now that it's fully moded it gets about 22 cruising. My 35th gets about 25 when cruising and the CTS with it's 3.6 VVT V6 burning regular gas shows 34 mpg on the in dash display cruising at 75.
    90 5spd, best ever E.T. 12.250
    best ever 1/4mi speed 112.89 mph
    Current dyno tune 383.54 rwhp 418.88 rwt

  5. #65
    Join Date
    Nov 2007
    Location
    Robinson, IL
    Posts
    231

    Mileage on 89 is great!!!

    My 89 SC 5-speed gets 31.4 on my last trip. running about 73-4 mph with the cruise control on.
    I'm certain the lack of cats, a 2 1/2" exhaust and a K&N filter on the intake probably has something to do with it. I bought it this way and I know that the gentleman that did the mods told me the mileage jumped dramatically with the exhaust system change. The K&N only seemed to help a little on mileage, but it seemed to help improve power.

  6. #66
    Join Date
    Jul 2003
    Location
    Eastern (nee Western) PA
    Posts
    4,992
    My commute just recently changed from 40 miles (20 highway) to 25 miles (12 highway), and my mileage dropped a good bit. I was getting 21-22, now I am getting 17-19. I looked at the math of it, and it seems to contradict my real-world results. Maybe the terrain (up grades, etc.) has an effect. Oh well. On long trips, the mileage is a lot better - maybe 24-25.
    God bless!!!

    1990 SC auto ... red outside, gray cloth inside ... ~205,000 miles (and climbing) ... driven daily!

  7. #67
    Join Date
    Feb 2007
    Location
    Montpelier VT
    Posts
    127
    I have had mine for a year and have yet to get 15. My last trip on the interstate I got 13mpg on the way there and 12.2 home.

  8. #68
    Join Date
    Aug 2004
    Location
    Latitude: 41.909147 Longitude: -72.450263
    Posts
    2,023

    Keeping it out of boost

    By watching the boost gage and keeping the car out of boost, I've been able to squeeze 3-4 more MPG out of the car.


    Don't crash into a tree just to avoid a skunk!


  9. #69
    Join Date
    Jun 2007
    Location
    Martinsville,Virginia
    Posts
    1,254
    befor i tok mine off the road,on trip 30 mpg on 93 oct.but mine is 100% stock.

  10. #70
    Join Date
    Dec 2004
    Posts
    2,004
    im not sure what my mpg is...really dont care, i dont buy/select my cars based on it.....it wouldn't really matter because I own a lead right foot

  11. #71
    Join Date
    Jun 2007
    Location
    Martinsville,Virginia
    Posts
    1,254
    my petes get 4.7 mpg.

  12. #72
    Join Date
    Dec 2004
    Posts
    2,004
    Quote Originally Posted by pap View Post
    my petes get 4.7 mpg.
    damn Pap...your drivers must lay the hammer down.....
    I filled up the rig yesterday 5.11 for desiel

  13. #73
    Join Date
    Feb 2009
    Location
    Horn Lake, Mississippi
    Posts
    448

    Talking Unbelievable fuel mileage

    Not sure if this is typical but I just took a 2800 mile journey to New Mexico about 3 months ago in my 1990 SC. I kept up with every stop I made for gas and wrote down mileage for everything. I know it was very precise because I filled up in one place and nearly ran out of gas when I was due for another fill up. As soon as I got home I took out all my data and started crunching numbers. So here are my findings. On the interstate in a stock 1990 SC with a manual transmission driving 70 to 75 miles an hour I was getting 35 miles to the gallon! I checked and double checked so I know I am right. From what I am seeing this is not typical.

  14. #74
    Join Date
    Aug 2009
    Location
    Junction City, KS
    Posts
    2,391
    Around town 18mpg
    on the highway running 75 for 100 miles... 20mpg

    so 19 is average

  15. #75
    Join Date
    Jul 2009
    Posts
    112
    30 MPG before head gasket failure.

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