Last post on Nov 04, 2013 at 5:25 AM
You are in the Hyundai Sonata
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Hyundai Sonata, Fuel Efficiency (MPG)
#616 of 955 2011 Sonata Turbo MPG
Jan 10, 2011 (10:23 am)
I hate to burst everyone's bubble, but the Sonata Turbo posted mileage is a scam. I purchased a 2011 Turbo in November and have close to 1700 miles. I check the MPG via the "Trip" and manually. The difference between the two is about .5 - .75 mpg. I admit to having a heavy foot, but I had the same foot driving my 2000 Lexus RX300. Would you believe I get the same gas mileage. I am averaging 16-18 mpg driving a 70/30 city/hwy mix. I am so upset because I was going to buy the non-turbo but the guy convinced me the mileage difference was negligible. I then heard Costco gas could be the culprit. So I drove until empty and added an octane booster along with Unocal 76 89 octane. I have been using Unocal since and my mileage actually went up, but only about 1.5 mpg. I know it is not just me because I have a friend at work who purchased the Turbo and he is averaging 20mpg with mixed driving. All the new cars I purchased in the past usually averaged between the posted sticker mileage. This is the first vehicle in 30 years of driving that is so far off base. I am actually contemplating taking action against Hyundai. I would like to hear if anyone else purchased a Turbo and is having the same poor fuel economy.
#617 of 955 Re: 2011 Sonata Turbo MPG [bearsfreak]
Jan 10, 2011 (12:16 pm)
With only 1700 miles on the car I would not really call on the big guns just yet. Why don't you first wait til after the first oil change and change where you get your gas, use Shell or BP gas, then let us know want your getting. I've never heard of Unocal 76 and maybe they way they treat their fuel is not agreeing with the car's engineering. And if after the first oil change your still getting 16-18mpg, consult with your nearest dealer.
By the way. You do know that if your vehicle is getting anywhere within the specified range that's in the fine print on the Maroney Label under the big numbers, that they will tell you it's operating to factory specs. I had tell that to a customer and they just didn't believe me.
Jan 11, 2011 (7:37 am)
The dealer lied. The turbo will only get close to the na cars mpg if it is driven conservatively. Get into the boost a lot and mpg will suffer.
#619 of 955 Re: 2011 Sonata Turbo MPG [LASHAWN]
Feb 02, 2011 (7:58 am)
I do not own a Turbo, I have a 2011 Sonata Limited and I am experiencing awful gas mileage, 18.75 mpg/city driving. I don't do much highway driving for an extended length of time but I would have certainly thought I would get better mileage. I had previously owned a 2003 Toyota Camry and averaged 23/city. I am quite upset, will be meeting with Regional Rep from Hyundai, I hope, but I don't know what to expect since the sticker is: quote "an estimate".
Anybody else having same mileage issues?
#620 of 955 Re: 2011 Sonata Turbo MPG [bertbird]
Feb 02, 2011 (12:40 pm)
Well, right now most of the US is on winter-blend gas which is a reformulation that is supposed to be more emissions-friendly in cold weather. Downside is most folks see a 2-3MPG falloff in their fuel economy. So that might be part of your problem.
There are other things to check to make sure the care is best positioned to maximize fuel economy. Things like making sure all tires are properly inflated, making sure the air filter isn't clogged, etc. You might also try a couple of tanks of gas from a top tier supplier ( http://www.toptiergas.com/retailers.html ) in case your current supplier isn't giving you a quality product.
EPA estimate is 22 city so you're only 3.25 MPG off. That could be due to winter gas, driving style, and your version of city driving (which may differ from my version and from the EPA's version). For instance, I call city driving anything non-highway. But I live in the suburbs and often can go for nice stretches at 40-45 MPH where my car is near peak efficiency.
#621 of 955 2011 Sonata GLS AWEFUL MPG
Feb 04, 2011 (11:20 am)
My wife and I have over 700 miles on the car. We drive it about 70% surburban (not city) and 30. We are very conservative drivers, accellerating and braking very gently we don't speed, never exceeding the speed limit by 10%. It is mostly used with temperatures in the 30s. We use brand name gasoline of the recommended octane. The air conditioner is never on and the windows are closed choosing instead to use the car's filtered air coming through the vents. We never tow anything behind the car, the trunk never has more than a few bags of groceries and at most there is one adult and one toddler passenger. The tires are at 32psi.The car never idles more than 30 seconds except perhaps at traffic signals.
I think I have addressed all the mpg variables above. My wife and I are achieving 13.x mpg, all types of driving combined. We have used several different methods to measure mileage. Hyundai used their own unrealistically conservative test and got 16 mpg.
They will do nothing about this because the car "is operating within design parameters". I have gone up the chain of command even at the corporate level and have been basically told "mileage may vary" and I "have no recourse".
Anybody else with a similar horror story, either the mileage or their refusal to fix an obvious defect?
#622 of 955 Re: 2011 Sonata GLS AWEFUL MPG [hyundailemon1]
Feb 04, 2011 (11:29 am)
wow that is not very good-we also own a '11 sonata GLS but with manual transmission. We average over 30 MPG. The best so far has been 37.6 doing highway driving with the cruise control on. (5 over speed limit) Speed limit on the highway near us is 70 MPH. Our sonata, bought 7/10, has 11,000+ miles
#623 of 955 Re: 2011 Sonata GLS AWEFUL MPG [hyundailemon1]
Feb 04, 2011 (2:35 pm)
Sounds to me like there is something seriously wrong. Could be your driving, but more likely the car. The car will get better mileage when fully broken in, but that still doesn't explain the mileage you're getting now. Do you have a trusted relative or friend that gets good gas mileage in their car? You might swap for a few days and see how they do. You might also try to get a loaner from your dealer and see how you do with that. Or, you might rent a Sonata and see how you do with that one.
This isn't going to cure your problem, but you should be able to figure out where the problem lies.
#624 of 955 Re: 2011 Sonata Turbo MPG [bearsfreak]
Feb 04, 2011 (3:56 pm)
I just bought my car last week and am below 400 miles, but my mileage is not much better than 20 mpg. However I think I have a bigger problem. The car I test drove seemed like a real screamer and threw my head against the head rest when I buried the accelerator. That instantly made me want the car. I was nice to my car during the pre-purchase test drive since I was actually going to buy the car and didn't want to abuse it before the break in. After purchasing, I buried the accelerator on my car and it didn't jump like the test drive car. I don't know if the car is acting normal or if I have a lemon. It just feels like a it is missing about 100 hp. It gets up to 80 mph fast enough to be hang with freeway traffic, but I paid for 274 hp and I want 274 hp. I would like to know other owners' 30-60 mph acceleration time and the general behind the wheel feeling. .
#625 of 955 Re: 2011 Sonata GLS AWEFUL MPG [jlindh]
Feb 04, 2011 (6:51 pm)
My parents bought the 2011 Sonata 2 weeks before we did and are getting twice the mileage.
In terms of driving style we drive conservatively. In fact on the highway where the limit is 55 we don't drive faster than 63 mph, and then we got <23mpg. The EPA statistics Hyundai so fondly embraces and promotes, are for 22mpg in the city and 35 mpg on the highway. The reals world results found at the EPA website: http://www.fueleconomy.gov/mpg/MPG.do?action=mpgData&vehicleID=30105&browser=tru- e&details=on give an accurate picture of how insincere Hyundai is when they tell me 16 mpg is within design parameters.