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Hyundai Sonata Real World MPG



  • Sorry--not 5000, but 500----would need to be going in lots of circles to hit 5000 miles from MD to NJ......
  • crankeeecrankeee Posts: 297
    edited December 2011
    Just bought a 2012 GLS with 205 65x16" tires and noted the GLS has final drive ratio of 3.25 while SE/Ltd have 2.89 with 18" low profile tires. No clue yet about RPMS at highway speed. hoping for 2000 RPM at 70 to get the 35 EPA number. anyone out here have any experience with RPM at highway speed?
  • crankeeecrankeee Posts: 297
    We just returned from first highway trip with 2012 2.4L GLS. Mileage in town has been 22-24 but highway was outstanding. 38 at 67 MPH per computer and at 70-75MPH drops down to 35-36. Car not even broken in.
    have not done manual calc but computer seems close.
    Hills have noticeable negative effect but speed is the biggest variable. At 65 MPH the mileage is phenomenal IMO. Shifting on hills is very smooth - no searching as on some 6-speed automatics. 2.4L and 6-speed very well mated for the car's weight. We also got the GLS with PEP ($750) to get the alloy wheels but avoid the low profile tires. The 205 65 R16" tires at 33 # of air made for a firm ride with some bouncing on bumps but overall a very well mannered car and the MPG was right on the EPA estimate at 70MPH
    Great car and even greater value in one family opinion.
  • longo2longo2 Posts: 347
    " No clue yet about RPMS at highway speed. hoping for 2000 RPM at 70 to get the 35 EPA number. anyone out here have any experience with RPM at highway speed?"

    I was unaware that the Hyundai GLS didn't have a tach. If that is indeed the case, I would suggest you get a ScanGAuge 2 and plug it into to the OBD2 port under the dash just in front of your knee.

    Everything you ever wondered about your cars performance can be set to display. MPG's, Tach, battery charge, gallons used, on and checks the fuel used 2wice every second, and the tach read out is dead on.
  • backybacky Twin CitiesPosts: 18,682
    The GLS does have a tach.
  • crankeeecrankeee Posts: 297
    edited January 2012
    longo: what I meant was we had not driven the car on the highway yet. Just got back and posted message on MPG. Outstanding on the highway with 2000 RPM (it does have a tach) and 67 MPH it got just under 38 on 100 mile trip. 10% speed increase drops it to 35 that makes sense. Great car so far!
  • cpenycpeny Posts: 18
    I've had my hyundai sonata for a year now. it gets the expected gas mileage if you drive at 2000 rpm on the highway. however as hard as I try I cannot get the expected gas mileage in the city. my car has 15,000 miles on it now and I've taken several trips. I do my best to keep the rp m's under 2000 rpm without causing an accident but I cannot get the 25 miles per gallon in the city. if anyone has any ideas I would really like to know because this is lori my overall gas mileage. so far I like the car in the way it drives but with gas prices going up, I may have to switch to a vehicle like the toyota prius. has anyone found the secret to the city gas mileage I would really like to hear it.
  • crankeeecrankeee Posts: 297
    edited January 2012
    We have anew 2012 Sonata GLS and are very impressed with the mileage so far. 22-26 in city with the extremes being all stop and go (22) up to 26 with streches including steady speed (26). My conclusion is that getting the car going is the worst MPG situation so if that is maximized then the MPG is poor. The highway at 67 MPH =2000RPM's and 37.6 on last 100 mile trip. That is outstanding in my world. At 75 it drops to 35-36 best.
    The hybrids get great city MPG with the battery and the Elantra is rated at 29 city. we wanted a more roomy vehicle than a Prius or Elantra and drive a mix of city/highway so it works for us.
  • samiam_68samiam_68 Posts: 775
    Just drive the car normally and don't pay attention to RPM's and you will get better MPG. RPM's have very little to do with fuel economy.
  • crankeeecrankeee Posts: 297
    edited January 2012
    Curious comment. I try to purchase a car model that has a lower final drive ratio that results in fewer RPM's at highway speed. The result is lower fuel use in my experience. Sport models use a higher final drive ratio (read Corvettes, Porsche, HP Mustangs and others), to get fastest speeds in shortest times at th expense of fuel mileage. The newer 6 and 8 speed transmissions allow for higher final drive without sacrificing overall performance.
  • hjc1hjc1 Posts: 183
    I think you will find that the trip computer is off by 2mpg (shows 38 -2mpg= 36) Several other Sonata blogs confirm this. I also found that the speedometer is off by 2 miles (verified by using my GPS)speedometer shows 65 actual 63

    The only true way to verify mpg is by dividing gallons purchased into mileage
  • crankeeecrankeee Posts: 297
    I agree with your last comment. I also did the manual calc and came up 2 MPG less. Strange that Hyundai would elect a program that misstated the actual results. Real test of the car will be the long term durability and how well Hyundai stands behind their stated warranty without a lot of nitpicking and fine print rulings. The internet and forums like this will be a true sounding board for both issues.
  • dgollydgolly Posts: 6
    I am disgusted with MPG performance. I thought I would average out around 30 mpg. Check this out and (anyone) pls comment.

    I've had the 2011 since May 2011. Over 14,456 miles used 530 gallons, average 27.5 mpg. While not great what concerns me is the variability. I've gotten as much as 34, as little as 19.82. Pure highway I can get it up there. City esp. up hills the mpg drops like a rock. But get this: Hyundai did a recal service on June 29 involving the transmission or some such thing, car popping out of drive while you're driving or something. Before the service I was averaging 29.66. After 26.93. That's my real concern, that Hyundai service did something.

    Anyone know anything?
  • dgollydgolly Posts: 6
    (after thought to enable email notice)
  • crankeeecrankeee Posts: 297
    edited January 2012
    We have had the same experience. highway is EPA MPG or even better. The 24 city EPA is hard to mimic with true city stop and go. Add in some freeway and it jumps right back up. I think the EPA test is heavy on California freeway use and light on chicago suburbs stop and go. Most cars struggle to get 20 MPG with true stop and go due to idling time and start from dead stop that kills MPG average. we mayaverage 28 but it requires lots of higway driving which the car prefers. We have no problem with the MPG vs. the EPA estimate. Beautiful car with all the bells and whistles,
    30 MPG city or better in town requirse a low mass roller skate or a car with a $6000 battery that needs replaing ultimately.
    Someday we may enjoy taking ethanol out of the mix to restore the BTU energy of pure gasoline and the resulting 10%+ increase in feul efficiency.
    Ethanol subsidy to farmers and producers allows us to use more gas which
    helps increase the cost of fuel, gas, energy and federal governemnet debt but we prefer the old efficiency of pure carbon fuel - NOT corn!
  • dudleyrdudleyr Posts: 3,426
    Ethanol has about 60% of the energy of gasoline so if the fuel is 10 % ethanol you lose 40% of 10% or about a 4% hit on fuel economy.

    Still significant though.
  • I also am having a problem with my 2012 Sonata Limited gas mileage. I'm getting 19 mpg compared to the 24 mpg on the sticker. That's 20% less. My highway mileage is 30 mpg compared to the 34 mpg on the sticker.
    I also love my Sonata but I am so very disappointed with the gas mileage. Perhaps when the car breaks in further the gas mileage will improve, but I am not counting on that to happen.
  • targettuningtargettuning Posts: 1,371
    Arrrrgh! I almost wish the EPA would not "advertise" fuel economy listings as posted on all vehicles. Invariably owners, such as yourself believe these numbers to be guaranteed no matter the weather..driving style...traffic conditions...mechanical condition of the vehicle...summer or winter..type of fuel blends etc, etc etc.. I am weary of defending the vehicle as being "to blame" . Once and for all, these numbers are derived in a controlled set of tests performed by the EPA and probably, while able to be met or even exceeded by a certain number of drivers are basically in optimal circumstances. Everything conspires to produce lower actual numbers for most. In short, enjoy the drive and rejoice a car as large,comfortable and quick as the Sonata is can still get economy numbers that were reserved for cars in much smaller size/performance classes not too many years ago. Again, city driving is comprised of stop, then go (slowly) then stop again and idle over and over during which YOU get ZERO (00.00) mpg. Please figure it out before you and others complain about "poor" city mileage it really isn't too hard!!
  • crankeeecrankeee Posts: 297
    Could not agree more with your comments. EPA "ESTIMATE" not guarantee. The new model Sonata offers all the creature comforts, size, safety, GREAT warranty, extreme value for the price paid and if all that is not enough, the Hyundai Assurance plan that was offered up till 1/3/2012 to guarantee trade in value if you maintain the vehicle properly. Other than holding your hand in the dark, I don't know what else they could offer.
  • I have no interest in going back and forth on this mileage issue but suffice it to say I live in San Diego where we have the best weather in the world, I do not have a lead foot and try very hard to maximize my gas mileage. I get 19 mpg in the city (20% less than the sticker) and 30 mpg highway (10% less than the sticker).
    Say what you want, but I think Hyundai knows the mpg's are exaggerated.
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