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4 Bangin, Fuel Sippin, Full Tank Challenge!

Discussion in '4 Cylinder' started by 2TRunner, Aug 29, 2011.

  1. Mar 29, 2013 at 7:56 AM
    #901
    cwoodruff08

    cwoodruff08 New Member

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    Hello!

    This is my first post to the forum. I just bought my Tacoma, a 2013 double cab 2.7L pre-runner. I have to say I am shocked at the mileage. Totally blows away what the window sticker said. Filled up a week ago and last night pulling into the driveway my fuel light came on at 400 miles exactly.

    IMG_20130329_064011_842.jpg
     
  2. Mar 29, 2013 at 9:53 AM
    #902
    Rackster

    Rackster Well-Known Member

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    Welcome to the mix!! Great first tank. Enjoy the truck!!
     
  3. Mar 29, 2013 at 9:55 AM
    #903
    Rackster

    Rackster Well-Known Member

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    Yes, great number for a 4x4. I was wondering though how Rich or WWs would do with one of our trucks for a couple of weeks.

    Gents - what kind of MPGs do you think you'd get with a 4x4 driven like you do your 5-lugs??
     
  4. Mar 29, 2013 at 9:57 AM
    #904
    KodiakToyTRD

    KodiakToyTRD Well-Known Member

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    388 and 12 gallons, 28.2 average.

    But I haz FR-S 4 banger...

    :cool:
     
  5. Mar 29, 2013 at 10:41 AM
    #905
    Kirk1589

    Kirk1589 Well-Known Member

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    And do the math for power to weight ratio.
     
  6. Mar 29, 2013 at 11:21 AM
    #906
    iroh

    iroh Well-Known Member

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    tonneau
    Finally found that pic. Instantaneous mileage at 45 mph. About right for the v6, my six speed was about 30 mpg give or take at 45 mph

    my 2.7 gets an easy 40 mpg at that speed in 5th if the ground is flat
     
  7. Mar 29, 2013 at 11:22 AM
    #907
    worthywads

    worthywads Well-Known Member

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    I'd need a loaner to know for sure.

    Just guessing I would hope I'd be able to squeeze 24 mpg out of a V6 Auto or Stick, and maybe 26-27 out of an I4 4x4?

    That would be average with much better in summer.
     
  8. Mar 29, 2013 at 11:46 AM
    #908
    iroh

    iroh Well-Known Member

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    tonneau
    I was over 24 twice with the six speed 4x4, above 23 a number of times. It fights tooth and nail. NICE-on is almost a wash, even at 55 mph it would only give 80 mpg thanks to the 1400 rpm idle, but a downhill of sufficient grade to keep speed in coast would give 60 mpg in gear; EOC always works, but the computer is programmed for that high idle so with either a bump or key start it dumps fuel (nooo the cats!) and revs itself well north of 2000 rpm which makes it interesting to wrestle back into the gear you want. DFCO has a two second delay between throttle lift and fuel cut every time so you have to plan ahead on that one.

    Literally the ONLY 'feature' of the six speed for mileage was that acceleration with cruise resume would use between 80 and 90% load for at least five seconds. The 2.7 goes to 100% right blasted now at the push of the button.

    If every other way the 2.7 drives SO MUCH more like a normal vehicle. I had no FAS on my last tank, just lots of cruise at 55 mph and typical planning for traffic. 26 mpg would be easy if you really wanted it.
     
  9. Mar 29, 2013 at 12:09 PM
    #909
    Kirk1589

    Kirk1589 Well-Known Member

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    What are you abbreviating
     
  10. Mar 29, 2013 at 12:47 PM
    #910
    Rich91710

    Rich91710 Well-Known Member

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    Look up "Hypermiling", and keep in mind that many of the techniques can not be used with automatic transmissions.
     
  11. Mar 29, 2013 at 4:31 PM
    #911
    91r100gs

    91r100gs Understand the Voice Within

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    Welcome to the forum and the we hate to buy gas club. Great first tank, at 20K you will get about 2 more MPG
     
  12. Mar 29, 2013 at 5:15 PM
    #912
    Rich91710

    Rich91710 Well-Known Member

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    I generally get close to the "sticker" highway mileage on any vehicle I have because of my commute.
    50 miles each way, 5am it's 65-70 all the way with little traffic.
    Trip home is stop and go. If I could only drive to work and not come home, I'd be pulling consistent 26+.

    I got 16 from my '95 Suburban until I started having multiple issues that prompted me to dump it and get the Taco. It was down to 12 when I sold it, and the guy that bought it said it had dropped to 8.
     
  13. Mar 29, 2013 at 5:20 PM
    #913
    BuzzardsGottaEat

    BuzzardsGottaEat "Pick up some speed.. You'll make it."

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    I'm looking at getting a 1993 VW Jetta SportWagen TDI 5 speed for a Summer commuter :D They're about as hard to find as my Pickup was, though . . .
     
  14. Mar 29, 2013 at 6:15 PM
    #914
    sandstock

    sandstock Member

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    My third tank on my new 2012 Tacoma, hope I can improve on these numbers, would love to get it up to the 26-30MPG range.
    Scan Gauge showing 23.1MPG. Actual pump numbers, 404miles@17.8 gallons=22.7MPG
    [​IMG]
     
  15. Mar 29, 2013 at 6:33 PM
    #915
    iroh

    iroh Well-Known Member

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    Sorry, post was primarily for worthywads, I figured he'd know what I was saying.

    nice-on = no internal combustion engine (but it's on) = neutral coast, engine running.
    EOC = engine off coast, can be synonymous with FAS = forced auto stop
    DFCO = dynamic fuel cut off (fuel cut when decelerating in gear)
     
  16. Mar 29, 2013 at 7:31 PM
    #916
    Rackster

    Rackster Well-Known Member

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    Tough to get a respectable number (relative to the Tacoma) with the big rig. Going from my RWD Ranger to the 4x4 Tacoma, I've given up a couple of MPGs. But I have a truck that fits my needs much better.
     
  17. Mar 29, 2013 at 9:44 PM
    #917
    Kirk1589

    Kirk1589 Well-Known Member

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    I know what it is. LOL idc about the delay or whatevr in the throttle I have a cable attached to mine and not a dumb wire
     
  18. Mar 30, 2013 at 7:24 AM
    #918
    iroh

    iroh Well-Known Member

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    tonneau
    I miss that cable sometimes. So little to go wrong and so cheap to fix if something does.

    Nah I was talking about the logic programmed into the 4.0L engine vs the 2.7L engine. Even though they're both throttle by wire, there's a massive difference in when the fuel cut kicks in.

    With the 4.0L (manual), the engine has to be spinning at least 1600 rpm in gear when throttle is lifted which often necessitates downshifting to trigger it; the throttle plate closes immediately, but for about two seconds it's still giving fuel and not much happens in the way of engine braking then. After that two seconds the loop indicator goes open, the truck lurches, and it slows down. It starts the fuel again at 1200 rpm.

    With the 2.7L, it's so much more simple. Anything between 1000 rpm and some point between 2000-2500 rpm (haven't nailed down its exact spot yet) engages the fuel cut if the throttle plate is closed and there is no delay. I've run into the upper cutoff coming off the highway - no DFCO until sometime on the off-ramp.
     
  19. Mar 30, 2013 at 11:24 AM
    #919
    Rich91710

    Rich91710 Well-Known Member

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    I've been keeping an eye on mine and I'm not going into open loop at higher speeds unless I'm braking with moderate force.

    At 40mph, throttle closed will go into open loop, but rolling down hill at 70, it won't go into open loop until I apply enough braking to make for a noticeable deceleration.
    Releasing the brake will cause it to go back into closed loop. This is all happening in the 1800-2200rpm range.

    Your manual may be programmed differently.
     
  20. Mar 31, 2013 at 1:00 PM
    #920
    cwoodruff08

    cwoodruff08 New Member

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    That's what surprised me about getting 22.6 mpg on mine. On the way to work Im generally 45-70 all the way there. Like you say though the drive home sucks big time. Stop and go to max 40 if I'm lucky. I hate LA traffic!!!
     
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