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What's with the stinking gas mileage?

Discussion in '5th Gen 4Runners (2010+)' started by 4RMoreYears, Dec 13, 2020.

  1. Dec 14, 2020 at 12:22 PM
    #31
    Mtbpsych

    Mtbpsych New Member

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    Have you ever driven a tundra? I have a 2018 crew max stock besides having 285’s and it gets 12mpg, got about 13mpg with stock tires lol the 5.7 is a gas guzzler compared to the 4.0 in the 4runners.
     
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  2. Dec 14, 2020 at 12:40 PM
    #32
    DRobs

    DRobs New Member

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    Do you park it outside at night or have a teenage son with a car?
     
  3. Dec 14, 2020 at 3:23 PM
    #33
    Lightning03

    Lightning03 New Member

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    My PRO got 18 mpg here in CO before I added a lift and 285’s. Now it gets 16 mpg, as others have stated the best way is to calculate by hand at the pump to get accurate mpg.
     
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  4. Dec 14, 2020 at 6:25 PM
    #34
    MeefZah

    MeefZah Curmudgeonly

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    Assholes call travel "overlanding"

    The kid is probably jerking off into the gas tank and bringing down the mpgs by dilution.

    That's what you meant, right?

    Fucking teenagers.
     
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  5. Dec 14, 2020 at 6:43 PM
    #35
    gunsnob

    gunsnob New Member

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    Wow, this conversation went south quickly.
     
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  6. Dec 14, 2020 at 6:43 PM
    #36
    gunsnob

    gunsnob New Member

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    Same here, I am hovering around 16.9.
     
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  7. Dec 14, 2020 at 6:53 PM
    #37
    Sixgunz

    Sixgunz New Member

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    If you could read, you would have seen that I said, "...which is worse than my 5.7 Tundra gets." If you're going to be a donkey hole, PM me and we can discuss this.
     
  8. Dec 14, 2020 at 6:57 PM
    #38
    Mtbpsych

    Mtbpsych New Member

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    :eek::crapstorm:
     
  9. Dec 14, 2020 at 7:10 PM
    #39
    Sixgunz

    Sixgunz New Member

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    I've never got better than 16.5 with it - that was coming back from Flagstaff (downhill) in 2017 on stock wheels. (it's a 16) I bought it new & it's sitting on 285's now. My daughter now drives it as a DD, but I won't base anything on her driving, I'm basing it on when I drove it up until 2 years ago. My wife's 2017 Sequoia doesn't get much better than 16 normally, so if you are/were getting 18, that is awesome.

    Check out the Tundra forum on the E85 problem...there's peeps not getting better than 10 or 11 on their Tundra 5.7's with that issue. Toyota quit selling E85 5.7 motors in California in 2015-ish because of their consumer-favoring lemon laws.
     
  10. Dec 14, 2020 at 10:47 PM
    #40
    mousemeat

    mousemeat New Member

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    they are known for being thirsty....welcome to the forum
     
    4RMoreYears [OP] likes this.
  11. Dec 14, 2020 at 10:56 PM
    #41
    Snickel Fritz

    Snickel Fritz This member likes turtles.

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    If three cans of Sea Foam are added to a brand new tank of 93 octane (ethanol free ONLY!) and you hit a highway where you can consistently keep your RPMs over 3k for 45 second intervals, while ambient humidity is below 40%, and sustain these driving conditions for three hours straight, THEN reset the fuel average, trip meters, and finally disconnect the battery for 1 minute... your economy should improve and be closer to normal again.
    Also, have your driveline checked up to the hubs and CVs, in case you have something giving constant resistance. I once found nearly 70 lbs. of human hair in a box truck's rear shaft.
     
  12. Dec 15, 2020 at 6:37 AM
    #42
    Red_5

    Red_5 New Member

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    You need to figure out if this is (a) a problem with your mileage read-out or (b) a problem with your engine.

    Just hand-calculate your mileage for a tank. It's no big deal. If you're actually getting 10.2 mpg in a stock, brand new T4R then yes, there's something wrong.

    But I expect this is just calibration weirdness of the read-out due to the newness of your rig.
     
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  13. Dec 15, 2020 at 6:57 AM
    #43
    4RMoreYears

    4RMoreYears [OP] New Member

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    I'm up to about 345 miles on the Odometer right now... So, yeah, she's still new, and I'm still breaking her in .... But still..., 10.2 MPG !!????
     
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  14. Dec 15, 2020 at 6:59 AM
    #44
    Toffees

    Toffees Stuff and things

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    Yes; either you're not calculating it (correctly), or driving too fast, or overloaded with junk, or maybe you have a mechanical issue.
     
    Last edited: Dec 15, 2020
  15. Dec 15, 2020 at 7:03 AM
    #45
    4RMoreYears

    4RMoreYears [OP] New Member

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    Just checking: The above is serious, right? (Cuz I'm heading out to buy sea foam RN!)

    Also, what's "CVs?"
     
  16. Dec 15, 2020 at 7:06 AM
    #46
    Toffees

    Toffees Stuff and things

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    That calculation is based on past driving, most of which may be test drives. Do the math yourself on a new tank and you'll be amazed by the improvement in mpg.
     
  17. Dec 15, 2020 at 7:12 AM
    #47
    HondaKen

    HondaKen New Member

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    Please don’t add 3 cans of sea foam and 93 octane fuel combo on the brand new truck. Do as others mentioned. Fill it up, run a few hundred miles, top it off and calculate. Let Toyota rectify this situation.

    it won’t do any harm, except waste money and time to go get it. But it won’t do any good...
     
    Last edited: Dec 15, 2020
  18. Dec 15, 2020 at 7:46 AM
    #48
    glwood54

    glwood54 Stop making me buy stuff!

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    My 2019 was similar when new. That dash readout on mine was in the low 14s for a while, then kept creeping upward. It now stays around 19.2.

    If you currently have 345 miles on the truck, you've barely surpassed what one tank of gas should get you. If you've already filled your tank multiple times, and are going off that dash readout, stop. Turn that readout off, or -0- it out, fill your tank, drive it 'til empty, hand calculate, report back. Basically the same thing @ElectroBoy said back in post #5...if hand calculating a full tank to empty still comes up 10.2 mpg, there's definitely something off.
     
    Last edited: Dec 15, 2020
  19. Dec 15, 2020 at 8:47 AM
    #49
    DRobs

    DRobs New Member

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    That's a little weird... I was more going with someone is stealing his gas.
     
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  20. Dec 15, 2020 at 9:03 AM
    #50
    Snickel Fritz

    Snickel Fritz This member likes turtles.

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    No, I was kidding- sorry!
    The scenario I prescribed is nearly impossible to fulfill though...

    On a serious note, if you are actually experiencing fuel economy this poor, I would absolutely take it up with Toyota corporate, right before you take it up with the dealership... because no new vehicle should be losing nearly half it's MPG rating in the real world, in the year 2020.

    edit:
    CV = Constant Velocity (axle/joint)... the little black rubber plunger looking thingy (CV boot) behind your front wheels is covering it.
     
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  21. Dec 15, 2020 at 10:42 AM
    #51
    mousemeat

    mousemeat New Member

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    70 pounds of human hair ? wtf.....did someone get run over ?
     
  22. Dec 15, 2020 at 10:47 AM
    #52
    ForRun

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    Not sure if this was mentioned. Are you buying your gas at a trusted station? Years back filled up at a shell station on the interstate. Worst tank of gas ever. Had a Corolla and ended up that tank got under 15 highway. Next tank it returned to normal
     
  23. Dec 15, 2020 at 11:07 AM
    #53
    AgentKooper

    AgentKooper New Member

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    Not a serious post, IMO. The OP has barely run through a single tank of gas on a brand new car and hasn't indicated that he's followed much -- if any -- of the advice from other posters. Nothing to see here.
     
  24. Dec 15, 2020 at 11:16 AM
    #54
    flyinhoot

    flyinhoot When in doubt, Throttle out.

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  25. Dec 15, 2020 at 11:16 AM
    #55
    flyinhoot

    flyinhoot When in doubt, Throttle out.

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    Thats at least 6-7 people!
     
  26. Dec 15, 2020 at 12:15 PM
    #56
    MeefZah

    MeefZah Curmudgeonly

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    Assholes call travel "overlanding"
    Oh this is embarrassing
     
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  27. Dec 15, 2020 at 1:49 PM
    #57
    4RMoreYears

    4RMoreYears [OP] New Member

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    WTF ???? Not even gonna engage with such pointless, needless & vacuous stupidity
     
  28. Dec 15, 2020 at 2:18 PM
    #58
    ForRun

    ForRun 4Runner

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    How many years have you waited to use that word in a real life situation?
     
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  29. Dec 15, 2020 at 2:28 PM
    #59
    4RMoreYears

    4RMoreYears [OP] New Member

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    Update from the OP:

    Ok - I called my local Dealer - He told me not to get my panties in a twist too much..... He's heard of this problem before ... And that 11-14 MPG isn't too uncommon with constant short-haul trips (my profile exactly) & with the constant stop & go driving of NYC ... He also claimed that gas here in the NYC-area is now all spiked with anti-coagulants / anti-freeze, and all sorts of other such crap to prevent freezing in our fuel lines... and that this worsens gas-mileage even more

    He also said they won't really do an exhaustive fuel-line workover until at least 3000 miles on the Odometer ... So there ya have it

    I will do a manual MPG count over my next 2 fill-ups and report back.

    Thanks very much everyone for your fantastic input, advice, support, and encouragement (except @AgentKooper ... He's (or she) a douche)

    Greatly appreciated!
     
    Last edited: Dec 16, 2020
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  30. Dec 15, 2020 at 2:39 PM
    #60
    4runningMan

    4runningMan New Member

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    Can you get it out on a highway at 55mph and just drive it for 30 miles and see what the gauge says?
     
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