Poor Gas Mileage! Help!!!
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2004-2007 Cadillac CTS-V Appearance Mods Discussion, Poor Gas Mileage! Help!!! in Cadillac CTS-V Series Forum - 2004 - 2007; Just wondering does anyone else have a problem with poor gas mileage on the 2007 CTS or is it just ...
  1. #1
    Duvale is offline Cadillac Owners Member
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    Poor Gas Mileage! Help!!!

    Just wondering does anyone else have a problem with poor gas mileage on the 2007 CTS or is it just my car? I can put a half tank of gas in, drive to work (30 miles), return home and the gauge is at or below quarter of a tank. The "check engine" light is NOT on....thanks.
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  3. #2
    rjoffe is offline Cadillac Owners Connoisseur
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    Re: Poor Gas Mileage! Help!!!

    The gauge on the dash is poor at best.

    Try the Fuel Used reading in the NAV as one method. The best would be to fill it up , drive to work then fill it up again, that's your definitive way.
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  4. #3
    FuzzyLogic is offline Cadillac Owners Connoisseur
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    Re: Poor Gas Mileage! Help!!!

    If you can't afford a full tank of 93 octane, you shouldn't have bought this car. In fact, if gas mileage was a concern, you shouldn't have considered a performance vehicle at all.
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  5. #4
    thebigjimsho's Avatar
    thebigjimsho is offline Cadillac Owners 10000+ Posts
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    Put in a full tank and report back. What is this half tank junk?
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  6. #5
    RyRidesMotoX is offline Cadillac Owners Enthusiast
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    At least he is running primo... A guy that I used to live near me with a cobalt SS turbo used to run 87 octane in his car... Its a 15psi stock... And he would complain about how his car felt sluggish.

    I agree you should full up the tank. Having low fuel allows for condensation in the tank, the fuel pump can pick up more sediment and clog the shit up, aaaaand if the police want to pull you over, you can't get far on a half a tank at full throttle
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  7. #6
    FuzzyLogic is offline Cadillac Owners Connoisseur
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    Re: Poor Gas Mileage! Help!!!

    Why the hell is this in the Appearance subforum? Because he "appears" to be getting poor gas mileage? Or because it "looks" bad to get stranded on the side of the road in an expensive car?
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  8. #7
    Andringa is online now Cadillac Owners Enthusiast
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    Re: Poor Gas Mileage! Help!!!

    Like everyone else said, you need to actually measure your gas mileage. I average about 14mpg around town and about 20mph on the highway.
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  9. #8
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    darkman is offline Cadillac Owners Master
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    Re: Poor Gas Mileage! Help!!!

    Looks like Fuzzy ain't taking any prisoners today.
    EnV and EnV like this.
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  10. #9
    Teamsorad is offline Cadillac Owners Member
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    Re: Poor Gas Mileage! Help!!!

    I agree this is pretty ridiculous, you should go by the miles not the guage. One thing for sure about my car the guage full to half moves a lot slower than the half to empty
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  11. #10
    xbladr is offline Cadillac Owners Fanatic
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    Re: Poor Gas Mileage! Help!!!

    Does the OP even have a V? How do we know he puts in primo? This whole thread is ridiculous.
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  12. #11
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    Looks like this thread on right on track!
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  13. #12
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    Re: Poor Gas Mileage! Help!!!

    Quote Originally Posted by FuzzyLogic View Post
    Why the hell is this in the Appearance subforum? Because he "appears" to be getting poor gas mileage? Or because it "looks" bad to get stranded on the side of the road in an expensive car?
    Man, you stole my lines!
    '05 Stealth Grey CTS-V, Hyper Silver Linea Corse Venetos w/Continental ExtremeContact DWs (summer), black Team Dynamics ProRace 1.2 wheels with 275/35-18 R-compounds (track), Hyperblack Rota Torques (winter), KW Variant3s, V2 front brakes, Hotchkis rear sway bar, EPS cam, TEA-ported 243 heads, FAST92 intake w/LS2 TB, JBA Camaro/G8 1-3/4" shorty headers w/JBA cat pipes, Corsa exhaust, UUC motor and tranny mounts, UUC shifter, MAPerformance trailing arms, Specter cradle bushings, etc...
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  14. #13
    thebigjimsho's Avatar
    thebigjimsho is offline Cadillac Owners 10000+ Posts
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    I appear to need a toilet...
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  15. #14
    carlson_mn is offline Cadillac Owners Enthusiast
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    Re: Poor Gas Mileage! Help!!!

    LOL. Anyways yes quit filling your car up with 5 gallons and considering that is half a tank cause the needle reads half. The first "half" of the gauge I get 175 miles and the second "half" about 100. Anyways I average about 17.3, maybe better with the warm weather starting to arrive. Our 170hp Nissan rogue averages about 21 in city driving as well. So it costs 25% more to drive a 400hp sedan? Okay with me for now.
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  16. #15
    ls6v is offline Cadillac Owners Member
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    Re: Poor Gas Mileage! Help!!!

    Is your car a V or a regular cts?
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