Prius (2010-12) Fuel :: Crazy Noise Plus Sudden Drop In MPGs
First time Prius owner Aug 2012. First 2 tanks of gas very impressed at 50-51 mpg. Then going slowly (10mph) through a parking lot I heard a strange noise on passenger side underneath the car. The best description is that it sounded like a steel lawn rake being dragged under the car on the asphalt. It lasted for about 30 seconds, then quiet and I have not heard it since. No sign of issues. No dash warning lights.
My next tanks rendered 47.5, 48.5, 46.5, 45.75 mpg. Then in the last 2 tanks suddenly at 41.5 and 42.75 mpg. This seems like a very major drop in mpg. I have been reading the comments regarding outside temp etc. and I will make adjustments. It just seems extreme and the "noise" is now making me wonder if some electrical component failed and is adding to the poor mileage issue.
Sonata I45 (YF - 2011+) :: Sudden Unintended Acceleration
The owner of the car claims that there was sudden unintended acceleration, and it was 09' Sonata.
Video .....
I thought this should be very concerned to us, since we all drive 11' sonata & up. I heard Hyundai installs some kinds of system to prevent this incident to all cars manufactured after May of 2012.
Sonata I45 (YF - 2011+) :: RPMs Suddenly Drop Off While Driving
2011 Sonata GLS, 95,000 miles.
This just started yesterday. While driving, the RPMS suddenly drop off. Depressing the gas pedal doesn't command any power output, even if I floor it, the RPMS continue decreasing and there is absolutely no power. The only way to keep moving is to completely release the pedal and then depress it again.
The transmission has been serviced twice by me and shifts smoothly. Should I plug a scan tool in ?
Sonata I45 (YF - 2011+) :: Front Stabilizer End Link Noise
From day one my 2011 Sonata Limited left front suspension has been very noisy especially over road reflectors or other abrupt irregularities in the road surface at slow speeds. I've always felt I had a bad strut or strut mount but I believe it's the ball socket in the front sway bar end link. Has to replace these to remove a knocking sound and had it go away afterwards? I test drove a 2013 Limited and it was solid and noise free over the same surfaces so I know something isn't right. I also see no aftermarket kits for these. I find the rear ones but not the front.
View 19 RepliesSonata I45 (YF - 2011+) :: Road Noise Coming From The Front
We bought a 2014 hyundai sonata on 28th of october. every thing worked fine. When we test drove we didn't notice the road noise. but yesterday we did notice it and it is unbearable. it sounds like it is coming from the front. I called the dealer and told them this is too much. We asked if we could return the car. we only had it 3 days. The dealer says he can fix it. We think it is a design problem. We just sold our 2009 sonata which was a very good car.
View 24 RepliesSonata I45 (YF - 2011+) :: Front Brake Clanking Noise?
Two months ago I started getting a clanking noise from the right front when I accelerated from a stop, or stopped and moved the car backwards from forwards or vice versa. I pulled the wheel and noticed pretty work brake pads, with the inboard pad completely shot. Car has 34k miles. The left side inboards and outboards were about 50% worn and were worn evenly. Sure enough, I had a sticking lower slide pin on the right. I cleaned everything up and lubed all contact points, and replaced pads and clips. I removed, cleaned and re-lubed all slide pins and holes with the appropriate silicone brake lube, and confirmed that they are siding freely. The problem is that this worked, but did not completely eliminate the problem. The noise still happens about 1 out of every 5-10 starts once the car starts to roll after the brake pedal is released. The rim seems to rotate ok when jacked up and I am not getting a pull. A mechanic buddy of mine said that in these cases he just ends up replacing the whole caliper.
View 9 RepliesSonata I45 (YF - 2011+) :: Creak Noise From Front Passenger Area
I am experiencing a front passenger area body creak noise and recently found a TSB to get it fixed. How much it might cost be to get it done at the dealership or anywhere else?
View 1 RepliesSonata I45 (YF - 2011+) :: 2013 - Front End Clunking Noise Over Bumps
So about a month ago my 2013 Sonata GLS started to make some clunking noise going over the littlest bumps over the road from the front end on both right and left side.
I brought it to one mechanic and they said the rack and pinion needs replacing which is an expensive fix. I couldn't believe that was the problem as I had no leaks and it was on their solid. I ended up taking it to my uncles mechanic and he stated its the stabilizer links on the front right and front left wheels. My way to work has a lot of bad pot holes... so I'm hoping that the stabilizers are actually the problem.
Anyways, tomorrow I will be bringing it to the mechanic to have them both changed. I know a lot have been complaining about this issue and instead of replacing the rack and pinion, I thought I'd try and see if it actually is the stabilizer links and provide a fix for some of the sonata owners on here.
Sonata I45 (YF - 2011+) :: Low Pitch Humming Noise From Front End At Low Speeds
Layely with my 2011 SE I've been getting a low pitch humming noise while traveling at low speeds, mainly going into a stop sign or light and searching for a parking spot. It happens with the AC off as well, not so much a vibration just a low pitch hum, also does it with foot off brake too as I just let it coast. Kind of annoying and want to make sure its good.
View 5 RepliesSonata I45 (YF - 2011+) :: 2013 - Vibration From Front Of Car - Interior Fan Noise?
Heard wicked vibration from front of car (almost like I hit something and it jammed under car) pulled over to realize sound was still there when stopped. after a few seconds realized it was the fan running (on setting 4) now a couple days later sound isn't as bad but still vibrating, doesn't matter where it's blowing (feet, chest, windshield). I bought sonata 20 months ago and has just under 23000 miles...
View 8 RepliesSonata I45 (YF - 2011+) :: 2013 - Front End Noise Like Bad Wheel Bearings
I just got a new Sonata and I find the car has a noise like bad wheel bearings in front, it sounds like driving on really rough pavement.. I have changed the tires and still get this..
View 1 RepliesSonata I45 (YF - 2011+) :: Clicking Or Pinging Noise Under The Passenger Front Door
My husband and I almost bought a used 14 sonata SE last night, but it was contingent on the dealer fixing the clicking or pinging noise going on under the passenger front door. It was going on during the test drive and continued after the car was turned off. The car has 7,000 miles on it. So the dealer took it to a hyundai dealer this morning to have it repaired under warranty, and the hyundai dealer said its a normal new car noise and will work itself out with time - but there's nothing to repair.
I'm aware that sometimes exhaust systems or heat shields ping a few times when the car is turned off? Did it eventually stop? And when? It really is annoying. I'd like to get this car, but he refuses to buy it if it's making this noise.
Sonata I45 (YF - 2011+) :: Random Squeaking Noise Coming From Front Suspension?
So I started hearing these random squeaking noises coming from the front suspension its what it sounds like. This only happens thou when i drive up into a drive way that is slanted. Or any kind of slow making slanted turns (~5-10mph)
I'm not 100% positive but it sounds like the suspension because it only makes noise when the car moves a little when ever i go up a drive way.
Sonata I45 (YF - 2011+) :: Creaking Noise Pops Up Every Now And Then On Front Passenger Side
I have this noticeable creaking noise that pops up every now and then on the front passenger side of the car. Problem is it is hard to replicate to the dealer. I usually notice it going over dips at some times, and most when I make a right turn into a raised road. Otherwise, not a peep out of the car.
View 19 RepliesSonata I45 (YF - 2011+) :: 2012 - Brake Noise From Driver Front Side
Just got a 2012 Limited 2.0T about 3 weeks ago. Didn't notice until last week that there is a noise coming from drivers front tire area at low speed (15-20mph). It sounds like a thin piece a metal is getting snagged and then snapping back into place. Took it back to Hyundai and they pulled the wheel and said everything looks fine and that it's due to new brakes needing to "wear in". At the time it was very limited when you would hear it, in the past week it's increased to an almost constant noise until I get over 20mph. I've searched and can't find anything dealing with this particular noise, what exactly I should look for when I pull everything apart? I'm more inclined to try and fix myself than believe the dealer. I can't seem to isolate it to a particular thing when driving, it does it on turns, going straight, stopping, accelerating.
View 9 RepliesSonata I45 (YF - 2011+) :: 2014 - Hesitation / RPM Drop And Huge Puff Of Gray Smoke
2 days ago, and again twice today, I have had an issue when I need to change lanes and speed up, but when I hit the gas pedal (not flooring it, but significant pressure) I have had the car jerk 3 times while the rpm needle goes up to 6. Then the rpm drops to 2, the acceleration finally kicks in, and a huge puff of grey smoke makes the cars behind me completely disappear.
I've read threads about the smoke with the acceleration, but no one mentioned the jerking and not wanting to actually accelerate at first.
There are 33,000 miles on my car.
I called the dealership and they said it only sounds like it's an issue that something in the engine needs to be cleaned out, and they want to charge me $200 if that's the case.
Should something need to be cleaned out at only 33,000 miles? (mind you I also just had the dealership tell me I didn't need my 30,000 mile tune up yet after doing an inspection).
Sonata I45 (YF - 2011+) :: Getting Increasingly Louder Noise Originating In Left Front Wheel
So I've been getting on increasingly louder noise that's originating in the left front wheel. It sounds like you're driving over road patches (rough spots). It does it worse when shifting the weight to that wheel by taking a right curve. I rotated wheel front to back no change. Brakes look ok. I was thinking wheel bearing but I have no play when I check it. Also it sounds like a general bearing rotation whine that matches road speed.
View 2 RepliesSonata I45 (YF - 2011+) :: Squeal Noise From Front Tires / Loud Humming When Rotated
I bought my 2011 Sonata with 27k miles on it. After a while (few months) I noticed on occasion when turning I would get a screeching/squeal noise from the front tires. Only happened during certain turns (U turns I noticed where higher chance of happening).
I rotated the tires (Front to the rear, Rear to the front), and then there was a loud humming noise. I got it checked with the dealer and they confirmed tires were cupping (uneven treadwear right?) . So now its been 10,000 miles and the noise is the same. I just got an alignment done and there has been not much of a change.
So, other than getting new tires, should I get the tires balanced? Or just rotate them once more so that the rear return to the front again? Will I have to get another alignment done?
Sonata I45 (YF - 2011+) :: Loud Groaning / Creaking Noise Coming From Front Suspension Area
2011 GLS 2.4L auto, 40K, out of warranty
There is a loud groaning/creaking noise coming from the front suspension area. At low speeds, this noise dominates all other noises and is directly related to hitting the gas or pressing the brakes, which produces a forward or backward force on the front suspension and chassis. I can sometimes hear it briefly just by pushing against the parked car.
My hope is that I can just tighten up some bolts and make this go away, but other posts suggest it may be struts, stabilizer links or other non-obvious sources.