[MD/UD] Fuel Economy
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  1. #1
    Junior Member salvorhardin has not yet proved knowledgeable salvorhardin's Avatar
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    Default Fuel Economy

    Decided to start a thread so 2011 elantra owners can post their fuel economy. So far hoping for better mileage as the engine breaks in. I've averaged a little better than my '05 elantra. I drive about 90% highway-10% city.

    2011 Elantra Limited Automatic:

    Code:
    actual MPG     display MPG     Odo. Miles    avg mph    gallons
      28.68           29.5            437
      32.72           33.0            653
      32.44           33.0            868
      30.15           30.9           1131           42
      32.06           27.9           1370           51
      30.66           31.0           1600           46
      30.97           31.0           2300           44       22.627
    Last edited by salvorhardin; 02-07-2011 at 01:58 PM. Reason: updated info

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  3. #2
    Newbie silvergls has not yet proved knowledgeable silvergls's Avatar
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    Default Re: Fuel Economy

    I should have kept track of my stats like you did. I'll start doing it the next time I do a fill, but I do remember it being somewhat correct. So far this is what I got.
    29mpg
    34mpg
    33mpg
    These were taken by account of the tank register and mileage calculation.

    Drives are about 40% highway and 60% city. Temp average 76 F

  4. #3
    Newbie STWater has not yet proved knowledgeable
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    Default Re: Fuel Economy

    Im in the process of keeping track of my gas mileage and misc. problems on my 2011 Elantra for JD Power (1 of 100 people selected). So far my average is about 30 mpg and im up to 4500 miles on the car and on my 16th fill. I'll scan the copy of my progress and post it when I get a chance.

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  6. #4
    Newbie watts916 has not yet proved knowledgeable
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    Default Re: Fuel Economy

    You guys are getting great mileage. I have 497 miles and have filled up 3 times since picking up the car with a full tank of gas. That is a whopping 13.8 miles per gallon.

    While it is all "city" driving, my 5,400lb. 2005 VW Phaeton with a 4.2L engine does much better.

  7. #5
    Newbie dougert has not yet proved knowledgeable
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    Default Re: Fuel Economy

    Here's a breakdown of my last 5 fuel-ups:

    actual mpg display mpg avg mph
    27.5 28.4 33
    28.2 28.9 32
    30.4 30.4 35
    30.4 30.3 37
    32.5 33.2 44

    You can see where I changed how I was driving to work (I used to drive the non-highway roads. Now I just drive the highway). I also just crossed the 3000 mile mark over the weekend as well.

  8. #6
    EXD SupaMod Ugzz knows a lot about Elantras Ugzz's Avatar
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    Default Re: Fuel Economy

    good job keeping track, seeing some nice numbers. im lovin these 2011s more and more.

    with gas prices so high i end up putting like a few gallons in when im low and the only station nearby is super expensive. then i go fill up at a cheaper place.
    so its too annoying to try and track, course in my 5 year old ride i know its been going downhill and i really just dont want to know anyway lol

  9. #7
    Administrator SuperGLS has information that can be trustedSuperGLS has information that can be trusted SuperGLS's Avatar
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    Default Re: Fuel Economy

    I'd like to see some figures from someone who drives 80-90% highway driving.

    Quote Originally Posted by watts916 View Post
    You guys are getting great mileage. I have 497 miles and have filled up 3 times since picking up the car with a full tank of gas. That is a whopping 13.8 miles per gallon.
    Something is wrong here. Seriously wrong.



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  10. #8
    EXD SupaMod Ugzz knows a lot about Elantras Ugzz's Avatar
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    Default Re: Fuel Economy

    Quote Originally Posted by SuperGLS View Post
    I'd like to see some figures from someone who drives 80-90% highway driving.

    Something is wrong here. Seriously wrong.
    somehow i missed that first time around, yeah though.
    you need to go back to the dealer with this info.. like now

  11. #9
    Newbie dougert has not yet proved knowledgeable
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    Default Re: Fuel Economy

    Quote Originally Posted by SuperGLS View Post
    I'd like to see some figures from someone who drives 80-90% highway driving.
    Since I adjusted my commute, I'm now doing about 90% highway driving, that's also evenly split between 55 and 65 speed limits as well.

  12. #10
    Newbie mcstar has not yet proved knowledgeable
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    Default Re: Fuel Economy

    Wow, I'm glad I got the manual transmission. I've only had it a week now, so I'm not even through the first tank of gas. The night I drove it home from the dealer when it only had 7 miles on it, I got 34.7 on the heads up display. That was about 90% highway driving at 75 mph.

    Then I got to talking to one of my buddies that has hyper-miled over 300,000 miles and he gave me some pointers. Basically, always shift before 2000 rpm and drive like a grandma.

    Well, last night I drove about 40 miles on Farm to Market roads averaging 55 mph. On a flat and straight stretch of 12 miles it held 67.5mpg! Of course as soon as I hit hills and stop signs the average went down quite a bit. It averaged out to about 47.5mpg with 30% stop and go city traffic for the entire 40 mile trip. I will be interesting to see the actual tank mpg after my first fill-up.

    Another tip, reset the MPG gauge while cruising at a fixed speed and take note of the mpg. For the first 10 miles or so it will be very sensitive since it has a small number of values to average. Now, drop the cruise down by 5-10 mph and note the new mileage. With a MT at a fixed speed, mpg will be strongly tied to speed/rpm minus losses from wind and road conditions. ATs are a little less strongly correlated due to torque converter losses.

    Most of the time you can pick your mpg by picking a fixed speed. Faster = < mpg

  13. #11
    Newbie JTH1018 has not yet proved knowledgeable JTH1018's Avatar
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    Default Re: Fuel Economy

    When I filled mine up the other day for the first time my display showed I was at 27.1 avg mpg, but since the dealer filled the tank when I got it, I'm not sure if they had reset everything so my ODO was at 261.2 and it took 10.147 gallons so I figured roughly 25.74 avg mpg. I've put about 50 all city miles on it since I filled it up myself and averaged about 25 mph (according to the display) and here's what i got....


  14. #12
    Administrator SuperGLS has information that can be trustedSuperGLS has information that can be trusted SuperGLS's Avatar
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    Default Re: Fuel Economy

    I've never found anything but a full tank of gas to be a good representation of real life fuel economy. That's probably just me though. MPT is what I like to hear about.



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  15. #13
    Junior Member NPMountaineer has not yet proved knowledgeable NPMountaineer's Avatar
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    Default Re: Fuel Economy

    I'm still on my 1st tank, but I'm at 33.2 which has probably been 80/20 highway/city. I have the auto tranny.

  16. #14
    You best be trollin foo UrbanerMezei knows a lot about Elantras UrbanerMezei's Avatar
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    Default Re: Fuel Economy

    If you guys cut your speed down from 75 to 70 mph you'd notice a lot of difference. I found with my 07 M/T that if I kept the RPM around 3000 to 3200 the gas millage was great, any higher and you might as well drop a match in your gas tank.

  17. #15
    Super Moderator hyunelan2 knows a lot about Elantras hyunelan2's Avatar
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    Default Re: Fuel Economy

    Rule of 5:

    For every 5mph over 60mph, you lose 5% fuel economy.

    40mpg @ 60... 38mpg @ 65... 36.1 @ 70, and so-on.

    (This is due to increased wind causing more power to be needed to overcome wind resistance).
    • Past: 2002 Elantra GLS (sold in 2010), 2003 Tiburon GT (Sold in 2014)
    • Present: 2004 Santa Fe GLS, 2004 Saab 9-3 Arc, 2010 Suzuki Equator Sport
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  18. #16
    You best be trollin foo UrbanerMezei knows a lot about Elantras UrbanerMezei's Avatar
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    Default Re: Fuel Economy

    As a rule of thumb I set my cruise at about 110 km/h 70 mph anything else becomes suicidal with the drivers up here.

  19. #17
    Junior Member NPMountaineer has not yet proved knowledgeable NPMountaineer's Avatar
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    Default Re: Fuel Economy

    Filled up last night. 1st tank avg 34.8.

    Reset it and made a 30 minute run of interstate going home and got 46.9 mpg! This was in hilly areas going between 60 and 80 mph.

  20. #18
    Newbie dougert has not yet proved knowledgeable
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    Default Re: Fuel Economy

    Quote Originally Posted by UrbanerMezei View Post
    If you guys cut your speed down from 75 to 70 mph you'd notice a lot of difference. I found with my 07 M/T that if I kept the RPM around 3000 to 3200 the gas millage was great, any higher and you might as well drop a match in your gas tank.
    I've been keeping my speed to between 65-70mph, and noticed that the "sweet spot" for rpms is around 1800. If I keep them to close to there, I average close to 38mpg according to the display.

    Quote Originally Posted by SuperGLS View Post
    I've never found anything but a full tank of gas to be a good representation of real life fuel economy. That's probably just me though. MPT is what I like to hear about.
    For my last tank, I broke the 400 mile mark. I drove 400.1 miles, and filled up with 10.3 gallons, for an average mpg of 38.8!
    My drives have been about 95% highway driving.

  21. #19

    Default Re: Fuel Economy

    u cant physically do 65-70 n keep ur tach at 1800. unless u were making 2 separate statements about that. 65-70 is around 3,000rpm's. in my 03 elantra anyways...

    unless the 2011 has ridiculously long gears... then it is possible and nevermind.

    as a matter of fact... does anybody know if theres a longer 5th gear i can swap into my transmission? 03 elantra. let me know i want a longer 5th gear.

  22. #20
    Junior Member NPMountaineer has not yet proved knowledgeable NPMountaineer's Avatar
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    Default Re: Fuel Economy

    Quote Originally Posted by Pete03GLS View Post
    u cant physically do 65-70 n keep ur tach at 1800. unless u were making 2 separate statements about that. 65-70 is around 3,000rpm's. in my 03 elantra anyways...

    unless the 2011 has ridiculously long gears... then it is possible and nevermind.

    as a matter of fact... does anybody know if theres a longer 5th gear i can swap into my transmission? 03 elantra. let me know i want a longer 5th gear.
    I ran it at 65 mph today on a flat stretch and it was at 2100 rpm. This is in the auto. The manual may be able to go lower.

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