06' Sonata Hiway Trip MPG

Discussion in 'Hyundai Sonata' started by Rob, Mar 19, 2006.

  1. Rob

    Rob Guest

    I just took my LX on a 2000 mile round trip with 98% being interstate
    driving. I averaged 27.3 mpg for the trip, with the cruise set on 79mph.
    Computer had my average speed at 66mph.
    Not great MPG but I was completely happy with the car. I loved the trip. ( I
    went alone, No wife and kids) It performed outstanding. Plenty of power and
    nice and quiet. LOVED it.

    Rob, Mar 19, 2006
  2. Rob

    Matt Whiting Guest

    The LX is rated 20/30 by the EPA, right? If so, that isn't too bad
    given the speed you were driving. I'd guess if you'd have driven closer
    to 60 you would have been close to the 30 highway rating.

    I've yet to take my GL on a long trip, but I'm running 27.5 or so
    commuting to work. I really doubt I will break 30 on a trip, but it'll
    be fun to find out. Since my commute is 70% or so highway, I was really
    hoping to be closer to the 70% point between the 24/34 EPA ratings which
    would be 31. I'd even be happy to break 30! So, I'm not real pleased
    with the mileage thus far.

    Overall, the Sonata is a pretty good car and a good value, but it does
    have some serious nits that I hope Hyundai will address and fuel economy
    is one of them. But this isn't nearly as bothersome as that )(#*$)@
    electronic throttle!! :)

    Matt Whiting, Mar 19, 2006
  3. Rob

    Eric G. Guest

    Matt, I know the general area you live in, but I am not sure if you had
    the same warm weather we had a week or two ago, but we were in the 60's
    and 70's for a few days. I just happened to fill my tank right before
    the warm weather hit. My mileage increased 3.6 MPG, to just shy of 26
    MPG, for that tank. And I didn't change my driving one bit.

    I think the warm weather is going to make some big changes to our

    Eric G., Mar 20, 2006
  4. Rob

    Matt Whiting Guest

    Yes, we had that short spell also, but I didn't see any change in my
    mileage. And now winter is back...

    I'm still hoping for that as well.

    Matt Whiting, Mar 20, 2006
  5. Rob

    Deck Guest

    what's this "electronic throttle" stuff??? Something else for me to worry
    Deck, Mar 20, 2006
  6. Rob

    Bob Adkins Guest

    Aye, it'll cause cancer of the foot it will. :)

    I think just about all new cars have "throttle by wire" now, but I may be
    Bob Adkins, Mar 20, 2006
  7. Rob

    Matt Whiting Guest

    The throttle has no mechanical connection to the fuel injection system
    as in the old days with cables and/or linkages. The throttle position
    is measured electronically and this is read by the engine control
    computer which then controls the throttle plate position via a motor and
    the fuel injector via PWM, at least this is what I believe is the case.
    I just got my service manuals a couple of days ago and haven't studied
    this in gory detail yet.

    I'm not worried about mine in the sense of it going bad, although I do
    trust a cable more than rheostats and motors. My complaint is that the
    throttle is overly sensitive and lacks the tactile feedback present in
    mechanical throttles.

    Matt Whiting, Mar 20, 2006
  8. Rob

    Darby OGill Guest

    I think so too Eric. The first trip I took of any length (125 m) with
    temperature above 60 F , my mileage went up by 2+ mpg (28.5)
    Darby OGill, Mar 20, 2006
  9. Rob

    GeoUSA Guest

    Temps and fuel economy... and tire pressure. I'm starting to think
    tire pressure is a significant part of the cold weather equation (tire
    pressure can drop with the temperature). Winter average on my 06 was
    down which was not a big surprise. On a day in the 30s I checked tire
    pressure and found the tires down about 3 or 4 psi. After returning
    the tires to 30psi I noticed my fuel economy is back to averaging above
    21 mpg on two recent tanks.
    GeoUSA, Mar 27, 2006
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