Last post on Feb 28, 2011 at 7:18 AM
You are in the Hyundai Sonata
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Hyundai Sonata, Sedan
#18 of 26 Re: 2010 sonata jackrabbit starts [vince17]
Feb 21, 2011 (7:34 pm)
Hi vince17 and others,
I did not understand the problems you mentioned, but I want to share an issue with my Hyundai Sonata 2010 automatic 4 cylinder 175 hp. I got it last feb so its been one year. I didn't drive it much at all (around 7,000 km) and when i did i was really happy with it- i felt smooth and on highways i felt like cruising (i dont speed much anyway).
Recently, i went to my first long trip with the car- the trip was about 1500km. In that trip i noticed that the car isnt that smooth. specially it felt like the engine was having a hard time accelerating. and the acceleration was not smooth at all. usually it was very quick and smooth from stop position, but during the trip i felt it dragging to move from stop. once it finally picked up speed, i also felt the engine was not performing well. on the highway i drove at 120km/hr with around rpm of over 2k. the mielage was over the estimation. 7.8 litres/100km on highway (hyundai says its 7 litres/100km.
i havent driven it much since the trip so cant really say is the reduced performance permanent. should i be worried ? do you think it could be bad quality of gas?
i dont have that much prior driving experience so can't compare with other vehicles i drove.
#19 of 26 Re: 2010 sonata jackrabbit starts [ace_ventura]
Feb 22, 2011 (8:09 am)
Are you in Canada? ( L/100 ). If so, Canadian fuel consumption ratings are based by the Government testing (not Hyundai's) on a "best case" situation travelling at a highway speed of 80Km/hr average. To see the difference the speed can make reset the L/km setting while driving at 80Km, observe the consumption rating and then go to your speed of 120. You will see an increase in consumption due to wind resistance. Also, if your tire pressure has not been checked since the warmer part of the year you will find the cold weather has lowered the pressure leading to higher consumption. If you live in a country such as Australia where it is summer during Jan./Feb. note that hot humid air can also affect performance on any car. I have occasionally felt the reluctant acceleration you experienced, both in summer and winter but it always goes away. 24000 km. on my 2010 4 cyl. Best economy I have obtained is 6.7L/100 cruising at average of 85 on a warm summer day with low humidity and air temp around 22C (no air conditioning required). Worst is 9L/100 on a 20 minute trip starting with a cold engine and air temp of -16C, also at 85Km/hr. To sum up, your fuel consumption isn't bad. Hope this helps.
#20 of 26 Re: 2010 sonata jackrabbit starts [oldguy13]
Feb 22, 2011 (1:25 pm)
Hi Old Guy 13,
many thanks for replying
Yes I am in Canada and the driving conditions were really typical on a canadian winter in one of the trips (very windy and cold). My tire pressure etc should be OK as I just had a oil change from the local hyundai dealer.
I am not too worried about the fuel consumption. I know very few can beat Sonata in that class.
My bigger worry is the acceleration/smoothness issue as it affects driving experience so much. I hope the reluctant acceleration goes away soon, as you suggested it will.
#21 of 26 Re: 2010 sonata jackrabbit starts [ace_ventura]
Feb 22, 2011 (2:58 pm)
Ok ace here is the scoop,The Sonata has a transmission recall,(got mine done while car was inspected) The recal is a reprograming of the transmission.Also is your check engine light on? (dosnt have to be). Secondly I noticed at about 42 mph the tranny "hunts" for the right command,eithier to "lock up" in gear or shift out of lock up (you will see your tach climb and here engigine rev. To me the car feels strained and vibrates with disagreement.I do not like this feeling and another reason I might trade it in.Also it is under warranty,find a good dealer who will work with you so your not slapped with a "hundred dollars please nothings wrong with your car visit" Vince 17
#22 of 26 Re: 2010 sonata jackrabbit starts [vince17]
Feb 22, 2011 (5:13 pm)
thanks Vince 17
yes, i think its exactly the same issue- i just stated my problem in a very "non-technical" way. acceleration was not smooth at all... and at around 40-50km/hour, i feel car not responding at all if i press the accelerator. so im having to press down on the accelerator or keeping the same speed for long time before accelerating.
ill take it to the dealer and try to explain the problem. hopefully the reproramming will improve the situation. i really like the car otherwise..so lets see..
#23 of 26 Re: 2010 sonata jackrabbit starts [vince17]
Feb 26, 2011 (1:15 pm)
Vince, is this a recall as in get a letter in the mail or do you have to ask the dealer about it? I've heard nothing in Canada.
#24 of 26 Jackrabbit Starts
Feb 28, 2011 (5:17 am)
I have a 2008 Sonata GLS with a 2.4. The throttle is extremely touchy indeed. I've been driving it roughly 2.5 months and I'm still getting used to it. Occasionally, I still have an unwanted "jackrabbit start", most often (for some reason) when I'm in reverse. I wish it weren't so, but I doubt it will ever change.
#25 of 26 Re: 2010 sonata jackrabbit starts [oldguy13]
Feb 28, 2011 (7:12 am)
Hey old guy, When I brought the car in for inspection this december the dealer said "We have a recall for the transmisson so we are going to fix it now".They said it was a new recall even before a mailing was sent out.The tech did something with an electronic program I think.Anyhow I hurt my neck while excellerating,the car sometimes has a delay or just takes off.Went yesterday to look at other cars,Hope that helps you ,Vince
#26 of 26 Re: Jackrabbit Starts [ostracized]
Feb 28, 2011 (7:18 am)
Greetings Ostracized, I am a bit fustrated at times with the lack of "smooth accerleration"My 2003 Kia Sedona (sister company to Hyundai) starts and speeds up smooth and fast without delays or jumps,wish my Sonata did too. Vince