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)
#799 of 955 where is the city mpg
Jan 11, 2012 (8:05 am)
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.
#800 of 955 Re: where is the city mpg [cpeny]
Jan 11, 2012 (8:41 am)
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.
#801 of 955 Re: where is the city mpg [cpeny]
Jan 11, 2012 (8:55 am)
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.
#802 of 955 Reply: where is the city mpg [samiam_68]
Jan 12, 2012 (6:25 am)
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.
#803 of 955 Re: Reply: Sonata MPG [crankeee]
Jan 12, 2012 (9:07 am)
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
#804 of 955 Re: Reply: Sonata MPG [hjc1]
Jan 12, 2012 (10:07 am)
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.
#805 of 955 Re: Reply: Sonata MPG [crankeee]
Jan 22, 2012 (12:31 pm)
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?
#806 of 955 Re: Reply: Sonata MPG [dgolly]
Jan 22, 2012 (12:33 pm)
(after thought to enable email notice)
#807 of 955 Re: Reply: Sonata MPG [dgolly]
Jan 22, 2012 (3:38 pm)
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!
Jan 23, 2012 (8:47 am)
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.