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Hyundai Sonata Real World MPG

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  • bhmr59bhmr59 Posts: 1,598
    Did that also include any local driving you did in W. VA? I.E. was it for the whole trip, or just the highway miles on the trip? Pretty darn good, even if it's just the highway miles.
  • smokey4smokey4 Posts: 9
    Highway miles only. Filled up before leaving Indiana & W.Va., reset trip computer both times. I've considered installing one of those air intake "Tornadoes", everyone at work claims they get 50-70 miles more per tank of gas with one?
  • nick0924nick0924 Posts: 13
    Have 2003 Sonata, 4-cylinder, automatic, tire pressure
    at 35 pounds, change oil and filter every 2500 miles.

    Bought the car new.

    No problems thus far, car has 34,000, but highway mileage
    at 60-65 mph is never better than 28 to 28.7 (the 28.7 is
    rare) and need to drive conservatively to achieve that.
    Drive 70 mph and it goes down to 27 mpg.

    Combined city roads/country highways (mostly 45 to 55 mph
    with a few traffic lights and stops) comes to 18 to 22 miles per gallon, often just 19.

    This mileage has been pretty much the same since day one.

    Someone wrote about "reflash" to engine and transmission
    computers. Is that likely to help? Any other suggestions?

    When I drive my 1993 Honda Accord, 4-cylinder, automatic
    with 284,000 miles, I get 33 to 34 mpg highway at 70-75 and
    24 to 26 on the country/city trips. Engines are about
    the same.

    Again, zero problems with the Hyundai thus far except
    for the constantly same and disappointing gas mileage.

    We take excellent car of all our cars, as evidenced by the
    Honda Accord.
  • lightfootfllightfootfl Posts: 442
    FYI
    A 2006 Sonata LX V6 with only 600 miles. Having only filled twice, and all around rural (town) traffic, no highway or sustained runs yet. 1st fill was 19.0 the 2d fill was 18.9. I use the a/c about 90% of the time. (Florida) My computer and my personal notes from mile 9 (purchase miles) and with an initial fill-up the day after delivery, for an accurate reference point of beginning, were both used to see the differences (if any). These figures are the average of the computer/notes combined. The difference was negligible. I am looking forward to better mileages as the miles traveled increases. :)
  • tb88tb88 Posts: 242
    To see a significant mileage improvement, don't use the Automatic A/C Control System (p:1-106); but use instead the Manual Control (p:1-108)- Put A/C on L(ow) not a given temperature.
    Avg MPG:25 Highway:30-31.

    Better yet, don't use A/C if you don't have to.

    With the Automatic Control you can't expect more than 20-22.
  • lightfootfllightfootfl Posts: 442
    Thanks, I'll have to look into that for sure. Every little bit of extra mileage helps. :)
  • sonlxsonlx Posts: 21
    Hi, I was wondering if anyone has used any sort of gas treatment product and if it has improved gas mileage at all. I am considering using some STP products but I wanted to get some feedback first. My concern is damage, or even the engine becoming dependent on the product in order to maintain good performance.
    Thank You :D :D
  • tb88tb88 Posts: 242
    It will become addicted to STP and you will have to pay for it!
  • sonlxsonlx Posts: 21
  • hsudoghsudog Posts: 23
    Car now has 2700 miles on it. I've found that highway mileage is highest at about 45-60 MPH, with 33 MPG easily achieved. At 70 MPH, mileage falls to about 29 MPG.

    What kills the Sonata's mileage is stop-and-go traffic either because of traffic jams or suburban stop signs. I've found that getting out of my subdivision with about 12 stops over 6 miles, I get about 17 MPG. Seems as if the Sonata is tuned for very good highway mileage, but crummy city driving mileage.
  • bobadbobad Posts: 1,587
    V6 mileage:

    First check at ~700 miles, 29.1 MPG averaging 39 MPH. Trip meter coincidentally showed exactly 29.1 MPG.

    2nd check at ~1000 miles showed 27.x MPG, average 37 MPH. Trip meter was ~1MPG off.

    I think hsudog is correct that the V6 hates stop and go driving. Maybe because it's hard to not accelerate hard for the pure fun of it. :blush:
  • tb88tb88 Posts: 242
    ...I think hsudog is correct that the V6 hates stop and go driving. Maybe because it's hard to not accelerate hard for the pure fun of it.

    That is the whole idea of gas guzzling!
    Moving a heavy object from stand still requires more energy than keeping it moving (requires far less energy ... less momentum); and of course accelerating hard requires even more energy to move it quicker/ faster! (law of physics!)
  • bobadbobad Posts: 1,587
    That is the whole idea of gas guzzling!

    I know. That's why I used the "embarrassed" emoticar.
  • chacagochacago Posts: 4
    Moderate suburb, moderate hiway, some idiling (wife doing appaisal work) 27.6 700 miles on car

    Moderate suburb, moderate hiwayKeep speeds <60 MPH 29.2 700 miles on car

    All highway averaging about 65 mph 30 MPG 1400 miles on car

    All Highway Averaging 75 mph 28.6 2000 miles on car

    Nice car, good price 15795 + tax and title.
  • johnm1johnm1 Posts: 6
    Go to dealer and say Hyundai Tech told to reprogram both egine and trans computer... Free of charge.
  • nelson55nelson55 Posts: 1
    I made a 430 mile trip on the interstate recently in my GLS V6. I traveled 70-75 mph and averaged 30.9 mpg.

    On a highway traveling 55 to 60 mph I have averaged as high as 34 mph.

    Also, I have found out that Chevron regular gas gets better gas mileage in my car than Shell regular gas. On my trip to my destination I used Chevron, and the return trip I used Shell. The Shell did get as many mpg. Have not tried BP gas yet.

    BTW, around town stop and go traffic, I only get 17-18 mpg like most people. Otherwise, I am satisifed with the highway/interstate gas mileage and the car.
  • ray_h1ray_h1 Posts: 1,134
    I look askance at claims that one brand of gasoline yields superior fuel economy over another brand*. There are just too many variables involved in making a blanket statement like that. One thing too many people fail to take into consideration in assessing one gasoline brand's superiority over another's is whether the initial leg of a trip is net uphill or downhill. The return leg over the same route would be skewed higher or lower in fuel economy accordingly. Way back in 1973 Ford briefly ran a TV ad touting the Ford LTD's superior fuel economy by listing that a 351 cu. in. V8 equipped LTD averaged 23 mpg** from Phoenix to Los Angeles. Big deal - the test car was on a downhill run, overall, toward the Pacific ocean from the lower elevations of the Continental Divide. The reverse trip could easily have been 2-3 mpg or more worse. My most recent round trip to Las Vegas from San Bernardino and back in my '03 Sonata GL (2.7L V6) netted 32.07 mpg on one tank of gasoline. This was on ARCO (BP) 87 pump octane, unleaded, 10% ethanol fuel. The cruise control was set to a speedometer indicated 75 mph; the manual air conditioner was on its arctic blizzard setting.

    *Not at all surprising when considering that the refiners' dirty little secret is freely exchanging gasoline between themselves to cover regional and particular refinery bottlenecks that crop up. The only real chemistry differences are the type and amount of additives they add at the tank farms prior to distribution to retail stations - and even this is subject to federally mandated minimums.

    **Not bad fuel economy for the time what with a 2 1/2 ton car, a carbureted engine without lean-burn technology, and no torque converter lockup on the transmission.
  • tex06tex06 Posts: 3
    My wife and I looked at the Honda Accord, Toyota Camry and Hyundai Sonata at the car show and we were both impressed with the Sonata. I'm planning on replacing my work car this summer, so I have been reviewing the consumers reviews on the Sonata.

    I'm trying to determine whether I want the four cylinder or V6. Gas mileage is important, but nit a deal breaker. All of the responses seem to be on the V6, which is encouraging, but for comparison sake, are there any owners of the four cylinder, who could comment on sufficiency of both power and MPG? Thanks!
  • blnewtoblnewto Posts: 146
    I don't own the 4cyl (we bought the GLS V6) but we gave it a good test drive and I must admit, it's got quite a good amount of power & acceleration for a 4 cyl. It's also quite smooth and refined for a 4cyl. I'd have purchased the 4cyl if we didn't end up w/ such a good deal on the V6, plus the V6 is really a blast to drive :)
  • tex06tex06 Posts: 3
    Thanks for the reply! Have you been satisfied with your purchase of the GLS V-6? What kind of gas milegae have you experienced?
  • blnewtoblnewto Posts: 146
    tex06, we've been very happy w/ our Sonata, and the V6 is such a smooth and powerful motor, it truly adds to the overall refinement of this vehicle in my opinion. We live in a town of 50,000 in New Mexico, so our city driving isn't spent crawling 10mph in rush hour. We're getting 30 MPG Hwy and 24-25 city. Our Hwy miles are cruising at 80 MPH, so we're quite happy w/ the economy of the V6 :)
  • bobadbobad Posts: 1,587
    Here are my last 4 fillups. Mileage is calculated, but the trip computer has always been within ~1 MPG. Total mileage is now ~2500. Cruise is usually set at 74mph. We think we could easily get 32 MPG setting the cruise at 55-60 mph.

    26.10 mpg 39 mph average 70% highway 30% city
    25.56 mpg 38 mph average 70% highway 30% city
    26.56 mpg 39 mph average 70% highway 30% city
    29.68 mpg 51 mph average 85% highway 15% city
  • tex06tex06 Posts: 3
    blnewto, thank you for the information. You've relieved some of my concerns about mileage on the V-6 and now I'm leaning towards that engine! I had an opportunity on a business trip, to rent a GLS with V-6 and loved it! It seemed to me in two days driving experience, to be an amazingly refined car for the money! I've always been a Toyota/Honda guy, but I'm having a hard time reconciling why there is a $4,000 difference in price! How does Hyundai do it?
  • blnewtoblnewto Posts: 146
    I've always been a Toyota/Honda guy, but I'm having a hard time reconciling why there is a $4,000 difference in price! How does Hyundai do it?

    I think it's a combo of Honda/Toyota being able to charge a premium for their vehicles based on reliablity and demand. Also I think Hyundai has a very efficient new factory and also is using price to buy market share. I doubt their making alot on each Sonata, but enough to sustain growth and raise it's presence in the US market.
  • ray_h1ray_h1 Posts: 1,134
    "I think Hyundai has a very efficient new factory and also is using price to buy market share."

    Agree - plus, just maybe, Hyundai's accountants are stupid. If so, Sonata fans should pray that they remain so. ;)
  • bae146bae146 Posts: 10
    Well I just filled my new v6 Sonata up for the first time. Averaged 23 mpg. Sounds good for the first tank. Sure beats my aerostar for fuel economy. Thank goodness the van is gone!!!! :)
  • xenon666xenon666 Posts: 15
    I've been averaging 23.3 mpg with 5800 miles so far. Not bad considering I'm heavy on the throttle at times and have a mixed drive.
  • cirdancirdan Posts: 9
    Bought it Sunday (4/29) and just filled up after ~160 miles. Got 25.3mpg measured, not trip computer, on the first tank. Mostly road miles, but pushing in (within break-in recommendations) to get a feel for the car.
  • seniorjoseseniorjose Posts: 277
    I doubt their making alot on each Sonata,

    Wall Street Journal: Hyundai Motors Corp revenue fell 28% this last quarter due to revaluation of the Korean currency...does this mean that the low prices on the Hyuindais are a thing of the past?
  • ray_h1ray_h1 Posts: 1,134
    In a way Hyundai's caught in a Hobson's choice: raise prices to compensate for revaluation of the Korean won or maintain sales momentum in one of if not their most important export markets? Given Hyundai's (and Korea's in general) take no prisoner attitude about dislodging the Japanese auto cartel's dominance of the American market, guess which way I'm leaning.
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