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Hyundai Elantra Real World MPG 2012

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  • steven39steven39 Posts: 636
    it's 44,my mistake..i'll be takeing another road trip up there around christmas time so i'll report my mpg once again from that trip....
  • dodgeman07dodgeman07 Posts: 573
    edited November 2011
    Thanks Steve. :)

    I don't own an Elantra nor am I affliated with Hyundai in any way. No horse in this race. :D Here is what I verify if having mileage problems:

    1. Quality of fuel (85 vs. 87 vs. 89 octane | 10% ethanol or no ethanol)
    2. Vehicle load (your total vehicle weight vs. dry curb weight)
    3. Tire pressure (cold tire pressure at 33-35 psi)
    4. Driving speed and acceleration (at speed limit and engine revs)
    5. Driving conditions (wind, hills/mountains, heavy traffic. etc.)

    87 octane, no ethanol fuel runs best for me. I buy name-brand fuel when I can. I keep my vehicle weight to a minimum - nothing unneeded in the trunk or passenger cabin. I set my cold tire pressure at, or a touch above, the manufacturer's recommended psi. If I drive over the speed limit or rev the engine a lot, I expect a mileage penalty. Hilly terrrain and heavy traffic reduce my mileage up to 30%.

    Best of luck!
  • I agree on what your saying. The only thing that I do different is instead of "air" in my tires, I use nitrogen. The hot and cold temps. that everyone has doesn't effect the tire prssure like air does. Air increases with heat, but loses in the cold, or shall we say the air molecules expand an contract acording to temp. an driving conditions. It use to drive me nuts in the winter with air and you car has the TPMS. If it goes below 25.7 PSI, the TPMS light comes on, especially if you don't drive it everyday or 2. Just my 2 cents.
  • I am confused about your method of calculating mpg. My reading of this is the gas you used to drive 440 miles was 10 gallons to refill at the end of your trip plus the amount of gas used to fill your tank from 10 gallons to full at the beginning of your trip. Please be more specific about your methods if my analysis of your method is incorrrect. I cannnot see how you measured starting with 10 gallons in your tank and how you ran your car to bone dry (not possible).
  • g2iowag2iowa Posts: 123
    You lost me on your methodology. I'd have no idea how I'd ever know my tank had exactly 10 gals of fuel in it unless I ran out of gas and then added 10 gals. But running out of gas is a very bad thing to do anymore to modern cars. [Not sure I've seen anything in the manual on the "reserve". Many models have the low fuel light kick in at 1.5 or 2 gals left in tank. So if you added 10 gals when low fuel light kicked in you may actually have as much as 12 gals in tank.] Thinking the way most people do the actual fuel used method is to fill the tank up until the gas pump auto-shut off kicks in. Then stop. Reset trip odo to 0. Drive your distance. Refuel tank from same pump and fuel till auto-shut off kicks in. Then divide miles driven by gals added. This gives the best way to approximate actual fuel economy achieved for that one tank.
  • steven39steven39 Posts: 636
    i find myself haveing to repeat this over and over to make you understand annoying.so hear i go again...read my lips people.........I FILLED UP MY GAS TANK BEFORE STARTING OUT ON MY TRIP WHICH WAS EMPTY WITH THE FUEL LIGHT ON...I PUT IN THE TANK ACCORDING TO THE GAS PUMP AT THE STATION WITH EXACTLY 10 GALLONS OF FUEL.I THEN RESET MY ODOMETER TO 0 AND BEGAN MY JOURNEY.WHEN I GOT BACK HOME ON THE SAME TANK I LEFT WITH THE TRIP ODOMETER SAID 440 MILES AND THE GAS TANK WAS EMPTY.440 MILES DIVIDED BY 10 GALLONS OF GAS=44 MILES PER GALLON..WHAT PART OF THIS EQUATION ARE YOU CONFUSED WITH??..WITH ALL DO-RESPECT IT IS SIMPLE MATH...THANKS.....
  • fushigifushigi Posts: 1,217
    Unfortunately you're not using an accurate method of measurement as you can't say with precision how much gas was in the tank before you added the initial 10 gallons.

    The generally accepted way to measure fuel economy is to fill up the tank until it's full. Don't overfill/top off. Write down your odometer reading. Then go on your trip. When you need to refuel or when you're done with the trip, fill up again. Now, take the miles driven (current odometer reading - the reading you wrote down) and divide it by the number of gallons it took to fill up at the end of the trip. That provides an easy & accurate fuel economy numbers that a consumer can get.
  • steven39steven39 Posts: 636
    i'll keep that in mind when i do my next road trip,thanks for the info....
  • backybacky Twin CitiesPosts: 18,624
    edited November 2011
    A couple of things for the OP to try on the next trip (at Christmas):

    * Reset the average mpg meter at the pump before the trip and at the pump at the end of the trip, so you can compare the computer's mpg to actual (measured) mpg. Would be interesting to know how they compare.
    * Measure mpg as explained in these recent posts, i.e. fill to first click-off both times, and if feasible use the same pump at the same station both times. If that isn't possible, the single-tank average might be inaccurate due to differences in pumps.

    (Posted before I saw #30)
  • i find myself haveing to repeat this over and over to make you understand annoying.so hear i go again...read my lips people.........I FILLED UP MY GAS TANK BEFORE STARTING OUT ON MY TRIP WHICH WAS EMPTY WITH THE FUEL LIGHT ON...I PUT IN THE TANK ACCORDING TO THE GAS PUMP AT THE STATION WITH EXACTLY 10 GALLONS OF FUEL.I THEN RESET MY ODOMETER TO 0 AND BEGAN MY JOURNEY.WHEN I GOT BACK HOME ON THE SAME TANK I LEFT WITH THE TRIP ODOMETER SAID 440 MILES AND THE GAS TANK WAS EMPTY.440 MILES DIVIDED BY 10 GALLONS OF GAS=44 MILES PER GALLON..WHAT PART OF THIS EQUATION ARE YOU CONFUSED WITH??..WITH ALL DO-RESPECT IT IS SIMPLE MATH...THANKS.....

    You have to repeat because your first explaination was very confusing. You are correct it is annoying. Your second explaination was clearer except the ALL CAPS which makes for difficult reading. I was not confuesd about the equations only your explaination. I am not certain about the amount of respect but it is simple math. I have very little confidence your method provides accurate measurement of MPG. It is certainly one I would not have used.
  • rudy66rudy66 Posts: 26
    Boys, Boys, so touchy. The point is, the mpg discussion is about city driving, stop and go, not highway driving at a steady pace with cruise control. As I said before, the gentleman with 44 gallons --- we won't hear from him again when he uses a whole tank with nothing but stop and go traffic.
    Dolf
  • g2iowag2iowa Posts: 123
    Added gas for 3rd time. Only regular unleaded (no ethanol). With colder weather (mostly 30-50 deg F), I don't let her get below half a tank. Went 194.7 miles on 5.917 gals for 32.91 mpg. Trip computer had calculated it at 30.3 mpg. This was about 50% highway/50% city-suburb, but no trip was more than 10 miles one way. And had passenger about half the time. Highway driving was in city-suburb area, so stayed at or under 65 mph. No A/C. Windows up all the time. No cruise control. No ECO. Tires at 32 psi. Now have about 570 miles on the engine. Coming from the car traded in which got about 22 mpg and used premium fuel, I'm pleased. But will admit I'm really trying to max out the fuel economy in a way I never did before.
  • Just leased a 2012 Elantra about a week ago. My regular commute is about 77% highway and 23% city (32 miles one way). I am getting over 37 MPG combined. I am going to verify this next time I fill up and calculate it on my own. My tire pressure is whatever the dealers put it at and I am using the ECO mode. the highway speed limit is 65 mph for half the time, than 60 mph for the other half, I normally do 5 MPH over. I am not using cruise control yet, but will be after 1000 miles

    I am very satisfy with the car so far.
  • backybacky Twin CitiesPosts: 18,624
    The point is, the mpg discussion is about city driving, stop and go, not highway driving at a steady pace with cruise control.

    Huh? Isn't it about all kinds of driving--however people may drive their Elantras? Some people do drive their cars at a steady pace on the highway, with cruise control. And some do stop-and-go city driving. And some do both. And everything in between.
  • fowler3fowler3 Posts: 1,919
    You will not get the best fuel economy in any new car until it has at least 5,000 miles on it. The engine is tight and trying to force it to do better will damage it. Just drive it easy, don't hold a steady
    speed for long periods of time, vary the speed for the first 1,000 miles, regardless of what the manual says. No fast starts and no panic stops.

    When you do a fuel test top off the tank. Note the ODO setting. Then the next time you fill up return to the same gas station and fill from the same pump you used previously. It's the only way to get an accurate number. If your car has a mpg rating on it's instrument display they are usually wrong.
  • fowler3fowler3 Posts: 1,919
    The April winner of the Power Ball jackpot told the news media he was going to buy a 2012 Elantra as soon as he could. His jackpot was $27-million after taxes. :) If I won that much money I would buy one of each style: Tucson, Elantra, and Kia Soul.
  • steven39steven39 Posts: 636
    why not the whole hyundai dealership while he's at it...
  • fowler3,

    You are correct. This is the only reliable way to get a reasonably accurate reading on mpg. And I also agree with your comments on the 5K breakin, driving it easy and varying the speed for the first 1000 miles. Time will tell.
  • Personally, if I won that lottery, I wouldn't even come close to going near a Hyundai dealership :) .
  • backybacky Twin CitiesPosts: 18,624
    edited December 2011
    How about an Equus? The one with recliners in back. Need a chauffeur also of course ;)
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