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My Fuel Mileage is AWFUL!

Discussion in '2nd Gen. Tacomas (2005-2015)' started by jguinn2005, Oct 13, 2009.

  1. Oct 13, 2009 at 11:47 PM
    #1
    jguinn2005

    jguinn2005 [OP] Active Member

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    I've got an 08 Tacoma Offroad Access Cab 6-spd with the stock BFG tires on it. I've also installed a URD CAI and run 87 Octane fuel.

    I get about 13.2 mpg in the city and no more than 16-17 on the highway. I know the 6-spd is supposed to get 15/19 (city/hwy) per EPA, but generally you see above that. I have a lead foot on ocassion but generally that's not the case. Even if I drive it like a grandma for a tank I don't see anything above what I have listed. Any ideas? I know fuel mileage has been beat into the ground on this MB but I couldn't find anything that fit my situation.

    Help!!!!!!!!!!!!!!!!!!
     
  2. Oct 13, 2009 at 11:52 PM
    #2
    jdkeller

    jdkeller How many words can be fit in this s

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    Dome light LED, 6000k HID Headlights and fogs, Grillcraft black mesh, rear 5100's, Total Chaos UCA's, 285/75/16 BFG KM2's, Spidertrax spacers, Blacked out emblems, cb,kenwood tm270 ham radio, All Pro 3" leaf pack, Fox 2.0 coilovers, Revenge Fab Sliders, u bolt flip kit, Pioneer avh4200, bed bar with light and antenna, Wet Okoles, Weathertech Mats, Wet Okole Armrests, Rear KR Fab bumper, bed mat, N-Fab spare tire carrier with full size spare on 16" TRD rim, Bedlinered flares and grille. Camburg Spindles, All Pro front fenders.
    Are you calculating it right?
     
  3. Oct 14, 2009 at 12:01 AM
    #3
    jguinn2005

    jguinn2005 [OP] Active Member

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    Yeah. Last time I filled up I put in 17.4 gallons and had 236 miles on my odo since my last fill up. I'm no math guru but I'm pretty sure I've got it right LOL.
     
  4. Oct 14, 2009 at 12:02 AM
    #4
    jdkeller

    jdkeller How many words can be fit in this s

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    Dome light LED, 6000k HID Headlights and fogs, Grillcraft black mesh, rear 5100's, Total Chaos UCA's, 285/75/16 BFG KM2's, Spidertrax spacers, Blacked out emblems, cb,kenwood tm270 ham radio, All Pro 3" leaf pack, Fox 2.0 coilovers, Revenge Fab Sliders, u bolt flip kit, Pioneer avh4200, bed bar with light and antenna, Wet Okoles, Weathertech Mats, Wet Okole Armrests, Rear KR Fab bumper, bed mat, N-Fab spare tire carrier with full size spare on 16" TRD rim, Bedlinered flares and grille. Camburg Spindles, All Pro front fenders.
    im stumped
     
  5. Oct 14, 2009 at 12:04 AM
    #5
    LBtaco

    LBtaco Thread killer

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    the speedo is off also..
    just throwin that out there :confused:
     
  6. Oct 14, 2009 at 12:09 AM
    #6
    gupster88

    gupster88 Well-Known Member

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    what size tires are you running?
     
  7. Oct 14, 2009 at 12:10 AM
    #7
    blackhawke88

    blackhawke88 wo ai ni bao bei ^_^

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    I have your exact numbers but I have 265/75s, exhaust, intake and LT. you should be getting better MPGs. By the way, EPA MPGs are measured at 55 MPH. How fast do you cruise on the highway.
     
  8. Oct 14, 2009 at 12:10 AM
    #8
    neslerrah

    neslerrah Taco lovin'

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    do you gas up at the same place? same pump? what's the psi in your tires?
     
  9. Oct 14, 2009 at 12:11 AM
    #9
    RelentlessFab

    RelentlessFab Tacoma offroad armor fabricating beast Vendor

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    Had tons on the old Taco's.... new Tundra is pretty stock
    lets hear a little more about driving style then(when you shift each gear, down shift, speed on highway/freeway or whatever else). Cuz I get 16 or so in town, and like 18-20 highway quite regularly. Thats lifted on 32's with a bunch of extra weight from add-ons.
     
  10. Oct 14, 2009 at 12:11 AM
    #10
    Anathollo

    Anathollo www.saveadane.org

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    Did you start getting crappy mileage AFTER you installed the URD CAI? that might be the reason, or maybe you need to start filing up at a different station. They might have a bad batch of fuel? :confused::confused::confused:
     
  11. Oct 14, 2009 at 12:21 AM
    #11
    jguinn2005

    jguinn2005 [OP] Active Member

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    I've always goten bad mileage with it. Cai or no cai. I've tried filling up at a couple different stations to no avail. All top tier stations though.
     
  12. Oct 14, 2009 at 12:55 AM
    #12
    jguinn2005

    jguinn2005 [OP] Active Member

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    On the highway I typically drive about 70 religiously and don't speed up and slow down. Shifting I typically shift anywhere between 2500-3000 RPM, seems to be the smoothest shift between those RPMs. When I down shift, I typically downshift below my up-shift point, in other worlds when I downshift my RPMs rise to 2000-2500.

    I've recently been filling up at the same station all the time and only on 2 of the pumps (one of them is always occupied) and always in the early morning hours.

    As for the tires 265/70R16
     
  13. Oct 14, 2009 at 12:59 AM
    #13
    jguinn2005

    jguinn2005 [OP] Active Member

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    Some other things that I've noticed. I put 93 in it sometime last summer (2008) with the CAI and didn't notice a difference. However on the CAI topic I have noticed that in the winter I get substantially lower GPMs with the CAI on. Last winter I took it off and put the stock intake back on, got better mileage in the winter months (in the warmer months is makes no difference). I might add that I've never tried the stock intake with 93 octane.
     
  14. Oct 14, 2009 at 1:02 AM
    #14
    neslerrah

    neslerrah Taco lovin'

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    how miles are on your Tacoma?
     
  15. Oct 14, 2009 at 1:05 AM
    #15
    jguinn2005

    jguinn2005 [OP] Active Member

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    Regular oil changes. Tire pressure within specs. etc etc
     
  16. Oct 14, 2009 at 1:09 AM
    #16
    blackhawke88

    blackhawke88 wo ai ni bao bei ^_^

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    hmmm then my guess maybe wheel bearings are bad? Wouldnt be too far fetched
     
  17. Oct 14, 2009 at 1:12 AM
    #17
    neslerrah

    neslerrah Taco lovin'

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  18. Oct 14, 2009 at 1:14 AM
    #18
    jguinn2005

    jguinn2005 [OP] Active Member

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    You know, I thought about that too. However for that to be true they'd have to be bad from the day I bought it with 2 miles on it. I may pull the CAI off and throw some 93 at it and see what I get. I'm going on a little road trip this weekend so that will give the ECU time to adjust during the trip. Last time I swapped out the intake for the stock I would get a bank 2 lean out about every 500 miles. Engine wasn't running too hot and there was no performance issue (minus the slight boost that the CAI gave me). So I'm wondering if I don't have an O2 sensor that's bad that the computer isn't picking up.
     
  19. Oct 14, 2009 at 5:12 AM
    #19
    TBAGRR

    TBAGRR Well-Known Member

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    i have almost the same setup but i have 275/70/17 on mine and a trd cai and i get 17mpg no matter what i do city, highway anything
     
  20. Oct 14, 2009 at 5:20 AM
    #20
    jguinn2005

    jguinn2005 [OP] Active Member

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    Yours a 6 spd?
     
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