1. Welcome to Tacoma World!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

Bed covers impact on MPG???

Discussion in '2nd Gen. Tacomas' started by larsotra, Apr 25, 2011.

  1. Apr 25, 2011 at 8:11 AM
    #1
    larsotra

    larsotra [OP] New Member

    Joined:
    Apr 25, 2011
    Member:
    #55505
    Messages:
    1
    Gender:
    Male
    First Name:
    Travis
    SW WISCONSIN
    Vehicle:
    2005 TRD,SR5 Sport
    Readylift SST Lift Kit 3'', MBRP Cat-Back Exhaust, K&N CAI, 33'' BFG, 18'' Wheels Custom Pin Stripping
    Does anyone have an opinion on bed covers and how they improve MPG????:confused:
     
  2. Apr 25, 2011 at 8:13 AM
    #2
    Capita

    Capita Well-Known Member

    Joined:
    Jun 6, 2009
    Member:
    #18096
    Messages:
    2,673
    Gender:
    Male
    Corner Brook, Newfoundland, Canada
    Vehicle:
    09 TRD Sport Double Cab
    I love my Extang Trifecta tonneau cover but I really don't see any difference in fuel consumption at all
     
  3. Apr 25, 2011 at 8:13 AM
    #3
    Jigzor

    Jigzor Well-Known Member

    Joined:
    May 19, 2009
    Member:
    #17413
    Messages:
    3,115
    Gender:
    Male
    Pennsylvania
    Vehicle:
    13 Subaru WRX Premium White Pearl
    Road Armour Mudflaps, Extreme Contact DWS Tires,Sunroof,Heated Seats,Navigation,STI Shift Knob
    Zero.
     
  4. Apr 25, 2011 at 8:33 AM
    #4
    wiscdave

    wiscdave Lets Do It!

    Joined:
    Mar 20, 2008
    Member:
    #5392
    Messages:
    2,551
    Gender:
    Male
    Northern Wisconsin
    Vehicle:
    Tundra Rock Warrior
    Past ride - 3" OME 885s&Shocks/ TSB 1.5AAL/ AX184 Rims 285 Firestone destination ATs/ 2 Shallow mount P310s in Supercrew Box - Punch 601s, Beefed up Hunter Brush guard, Tint, Fog light mod, AFE Drop in, AC and Fog light mods, scangauge
    I think mine gives me a 0.5mpg - 1 mpg. Less drag..
     
  5. Apr 25, 2011 at 8:35 AM
    #5
    joneill03

    joneill03 Look away, I'm hideous!

    Joined:
    Oct 26, 2009
    Member:
    #24912
    Messages:
    3,353
    Gender:
    Male
    First Name:
    Johnny-5
    Chantilly, VA
    Vehicle:
    Silver 2010 OR
    didn't see much if any improvement with mine. Highway driving might be more affected by it though.
     
  6. Apr 25, 2011 at 8:36 AM
    #6
    MAXTacoma

    MAXTacoma Well-Known Member

    Joined:
    Feb 15, 2007
    Member:
    #917
    Messages:
    4,341
    Gender:
    Male
    Vehicle:
    Lexus GS 350
    When I had my Undercover on I didn't notice any change.
     
  7. Apr 25, 2011 at 8:46 AM
    #7
    Jdevine80

    Jdevine80 Member

    Joined:
    Jan 13, 2011
    Member:
    #49192
    Messages:
    16
    Gender:
    Male
    First Name:
    Josh
    Fort Collins, CO
    Vehicle:
    '11 V6 DC TRD Sport 6 Speed
    Nothing in town and not much with mixed but with total highway driving I did notice a 1-1.5 mpg increase. I take the same highway trip often and I've done it several times with and without the cover and the results are consistent.
     
  8. Apr 25, 2011 at 8:56 AM
    #8
    Tombs

    Tombs Member

    Joined:
    May 29, 2010
    Member:
    #38016
    Messages:
    22
    Gender:
    Male
    Alabama
    Vehicle:
    2010 Double cab 4x4 Pyrite Mica
    Icon coilovers,2inch AAL,Undercover,Wet Okole,Weathertech
    I have a Undercover.No change in town or on the highway.
     
  9. Apr 25, 2011 at 9:06 AM
    #9
    MJonAgs32

    MJonAgs32 asphinctersayswhat?

    Joined:
    Apr 14, 2009
    Member:
    #15949
    Messages:
    9,211
    Gender:
    Male
    First Name:
    MJ
    Union City, CA (SF Bay Area)
    Vehicle:
    07 Mid-Travel 4x4 DCSB 6spd
    check out my build
    Won't chang your mpg. Mythbusters had an episode on it
     
  10. Apr 25, 2011 at 9:46 AM
    #10
    xxaarraa

    xxaarraa Well-Known Member

    Joined:
    Jun 25, 2010
    Member:
    #39413
    Messages:
    580
    Gender:
    Male
    No change. ONLY mod that will improve MPG is to keep it under 2k rpm. Which is impossible considering 2k in 6th gear is 55 mph. Who the heck drives at 55??
     
  11. Apr 25, 2011 at 10:19 AM
    #11
    robstaco35

    robstaco35 Well-Known Member

    Joined:
    Sep 23, 2010
    Member:
    #43680
    Messages:
    70
    Gender:
    Male
    First Name:
    Rob
    Cape Cod
    Vehicle:
    Tacoma SR5
    mine gave me 0 mpg and maybe even made it a tad worse.
     
  12. Apr 25, 2011 at 11:14 AM
    #12
    Jdevine80

    Jdevine80 Member

    Joined:
    Jan 13, 2011
    Member:
    #49192
    Messages:
    16
    Gender:
    Male
    First Name:
    Josh
    Fort Collins, CO
    Vehicle:
    '11 V6 DC TRD Sport 6 Speed
    Even if it does increase slightly (like I saw at 1, maybe 1.5mpg), it doesn't make it worth buying just for the potential to see an increase in mpg. It would take a very long time to make up the price difference in what you spent on the cover. So if you were going to buy it for what it's intended for, go ahead but not for an mpg increase.
     
  13. Apr 25, 2011 at 11:21 AM
    #13
    carcharias

    carcharias Giggiddy what what

    Joined:
    Jan 9, 2011
    Member:
    #48988
    Messages:
    4,676
    Gender:
    Male
    First Name:
    Mike
    Los Angeles, CA
    Vehicle:
    '11 AC MGM OR
    Kings all-around w/ 700lb coils, Dakar leaf pack, TC uca's, DO single hoop bumper, BAMF bolt-on sliders w/ kickouts, Rigid 20" e-series spot/flood, aFe pro-dry, BFG KM2 255/85/16, silver TRD FJ wheels, WARN M8000-s, Access LE, Grillcraft, BAMF lightbar, BAMF rear dif skid, BAMF LCA skids, window tint, Wet Okoles, WeatherTech floorliners, Silverstar lights, led dome lights, Redline Tuning hood struts, center console lock mod, mag-lite mod, extra d-rings, re-routed exhaust, ATO skids, ATO Hi-Lift mounts, pipe tailgate lock, seatbelt alarm delete, wheel/spare locks, Viper 5901, LoJack... WISHLIST: a golden canary that poops platinum
    Erm... I noticed at least 20 extra miles to my tank after install of my Access LE. Did I drive differently? Maybe, but I continue to get better mileage than when I didn't have it on. I also believe in ghosts and ufo's.

    Check this, though:
    http://www.youtube.com/watch?v=oYO21Frl9Vc&NR=1&feature=fvwp
     
  14. Apr 25, 2011 at 9:56 PM
    #14
    Bodete

    Bodete Well-Known Member

    Joined:
    Jun 3, 2009
    Member:
    #18009
    Messages:
    79
    Gender:
    Male
    Missouri
    Vehicle:
    2009 SR5 DC LB 4x4
    Eibach springs w/ 5100 Bilstein shocks set to "0", Rear TSB
    I was interested about the mpg before and after adding a bedcover. So I calculated mpg for 3 weeks of normal driving before, the average was 18.5 and 3 weeks after averaged 20.25. It did make a small difference.
     
  15. Apr 25, 2011 at 10:21 PM
    #15
    supralight

    supralight Well-Known Member

    Joined:
    Aug 20, 2009
    Member:
    #21479
    Messages:
    674
    Gender:
    Male
    First Name:
    Dan
    Earth
    Vehicle:
    2013 4Runner limited
    may have been the summertime getting there with warmer temperatures, less humid conditions, etc... very hard to prove that your bed cover did the change. I did the test also, but didn't have a scangauge then, and discovered a 5% increase in mileage, but I think it was me creating the difference because I WANTED it.
     
  16. Apr 25, 2011 at 10:49 PM
    #16
    StandingCow

    StandingCow Well-Known Member

    Joined:
    Apr 24, 2009
    Member:
    #16373
    Messages:
    1,808
    Gender:
    Male
    First Name:
    John
    NJ
    Vehicle:
    09 SR5 4x4 V6 access cab
    It won't change your MPG and might even hurt it.
     
  17. Apr 25, 2011 at 10:51 PM
    #17
    OZ-T

    OZ-T All of those moments....will be lost.....in time

    Joined:
    Dec 15, 2009
    Member:
    #27584
    Messages:
    22,035
    Gender:
    Male
    First Name:
    Peter North
    British Columbia
    Vehicle:
    Mag Grey 09 Trd Sport DCLB 4x4
    OME 885x , OME shocks and Dakars , Wheelers SuperBumps front and rear , 275/70/17 Hankook ATm , OEM bed mat , Weathertech digifit floor liners , Weathertech in-channel vents , headache rack , Leer 100RCC commercial canopy , TRD bedside decals removed , Devil Horns by Andres , HomerTaco Satoshi
    They don't .
     
  18. Apr 26, 2011 at 5:17 AM
    #18
    tx_shooter

    tx_shooter Trying to Spread Common Sense and Rational Thought

    Joined:
    Jul 3, 2010
    Member:
    #39745
    Messages:
    7,462
    Gender:
    Male
    First Name:
    Zech (pronounced zak)
    DFW, Texas
    Vehicle:
    06 PreRunner SR5 DC
    anti-theft Marine Corps sticker on back window, loose nut behind the wheel, Firestone Ride Rite air bags
    Didn't their testing method get busted on that one??? If I remember right, they used a shortbed V8 pickup. People have retested it with different vehicle configurations and came up with different results. Not to mention how un-scientific it is to say that testing one truck is the rule for all the other trucks out there.

    The weight of the cover makes a big difference if you see any gain also. I had a fiberglass bed topper on my old F-150 and saw a mileage gain when I took it off. When I replaced the topper with a marine canvas bed cover my mileage went up again on long drives.
     
  19. Apr 26, 2011 at 7:37 AM
    #19
    buddywh1

    buddywh1 Well-Known Member

    Joined:
    Apr 23, 2010
    Member:
    #35825
    Messages:
    1,456
    Gender:
    Male
    Philly PA
    Vehicle:
    07 DC SR5 4x4
    Would seem they should help but I've seen little if any improvement.


    It does seem to feel better at highway speeds though, I believe because it's creating additional down-force. All it needs is to generate one ounce per square inch of down-force (not much when you think about it) that's 3600 ounces (60" * 60") or 225 lbs additional down force. I know it is creating some since it's pressed down against the ribs for the most part, fluttering a little (meaning zero) in a few areas and never being sucked up.
     
  20. Apr 26, 2011 at 7:45 AM
    #20
    TheITguy

    TheITguy Well-Known Member

    Joined:
    Feb 4, 2011
    Member:
    #50515
    Messages:
    45
    Gender:
    Male
    New England
    Vehicle:
    2008 Toyota Tacoma TRD Sport SR5
    In my opinion, it does make a difference, BUT, its not a huge difference tank to tank. It maybe over the life time of the truck which would make it worth it. Just my opinion...... ;)
     
To Top