CarComplaints.com Notes: The 2011 Sonata has a seriously defective engine that seizes without warning. It was awarded the dubious honor of being the first CarTalk / CarComplaints Turd of the Week in late September 2015.

A class action lawsuit was filed in May 2015 against Hyundai that claims the 2.4L Sonata engine is defective. More info here.

10.0

really awful
Crashes / Fires:
8 / 16
Injuries / Deaths:
2 / 0
Average Mileage:
65,354 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2011 Hyundai Sonata engine problems

engine problem

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2011 Hyundai Sonata Owner Comments (Page 7 of 18)

« Read the previous 20 complaints

problem #224

Oct 152015

Sonata

  • miles

A D V E R T I S E M E N T S

The contact owns a 2011 Hyundai Sonata. The contact received notification of NHTSA campaign number:15V568000 (engine); however, the part to do the repair was unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not expierenced a failure. The VIN was unavailable. VIN tool confirms parts available.

- Bayside, NY, USA

problem #223

Oct 012015

Sonata

  • 59,000 miles
The contact owns a 2011 Hyundai Sonata. The contact stated that while driving at approximately 65 mph, the vehicle decelerated independently and the rpms increased. In addition, the vehicle hesitated without warning and the contact heard an abnormal noise coming from the vehicle. The vehicle was taken to a dealer where the failure was undetermined. The vehicle was not repaired. The contact received a notification of NHTSA campaign number: 15V568000 (engine) however, the part to do repair was unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The approximate failure mileage was 59,000. VIN tool confirms parts not available. Updated 04/20/16

- Cincinnati, OH, USA

problem #222

Nov 062015

Sonata

  • 50,000 miles
The contact owns a 2011 Hyundai Sonata. The contact stated that while driving at 40 mph, there was a knocking noise coming from the engine. The contact received notification of NHTSA campaign number: 15V568000 (engine) and stated that the part needed for the repair was not available. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the failure. The approximate failure mileage was 50,000. Parts distribution disconnect.

- New Britain, CT, USA

problem #221

Jul 012015

Sonata

  • 93,000 miles

A D V E R T I S E M E N T S

I have a 2011 Sonata, complains of excessive oil burn and loud noise.car burns around 1 quats per 1000 miles.dealer done a oil consumption test and found out its burning too much oil.they wants me to replace the engine.I have done all the oil changes at 3000 miles and its well maintained.dealer said everything is fine with my car as per the 2015 engine recall is concerned.they want me to pay for an engine replacement, when its well known that 2011 Sonata engines have manufacturing defect.I found lot of people having same issue end up in engine stall.its a matter of safety.nobody expect a new model car to burn oil like this and dealer will never say that I was low on oil, when I take the car for an oil change.I found out the problem after randomly checking my oil level.it was well below low.all other cars we have need no top up between oil change.I request NHTSA to take this matter seriously.

- Snellville, GA, USA

problem #220

Dec 132015

Sonata

  • miles
I am having trouble starting and completely shutting my car down. When I hit the button to start it I get a rattle noise and the the engine doesn't turn over. When I try to shut it off the display in the car will tell me to shift to park when already in park and the radio will not shut off. I have to re-start the car and move the shift lever from park to drive and back to get it to shut down. This goes on several times some days. Also when I'm driving in automatic, the car will suddenly go into manual first gear and I will have to shift over to manual and back to auto to put it in drive. I had a recall for shift lever problems before but I think there is more to the problem then what they are fixing. This car seems to have many electrical problems. My HVAC also has quit working while driving and had to shut the car down before it would work again.

- Lansing, MI, USA

problem #219

Sep 102015

Sonata

  • 37,000 miles
The contact owns a 2011 Honda Sonata. The contact stated that while driving at approximately 35 mph, there was an abnormal knocking noise coming from the front of the vehicle. The failure recurred numerous times. The vehicle was taken to a dealer where it was not diagnosed or repaired. The contact received notification of NHTSA campaign number: 15V568000 (engine) however, the part to do the repair was unavailable the contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the failure. The failure mileage was approximately 37,000.

- Baltimore City, MD, USA

problem #218

Jul 122012

Sonata

  • miles

A D V E R T I S E M E N T S

Case number 8404334 : hi my name is desiret canales I purchased a car on September of 2010 not even a year later started to hear knocking in the engine in 2012. Took the car to mid island- Hyundai in centereach NY 11720 was told that it was due to "lack of maintenance" that the "short block, gaskets tensioners" needed to be replaced. Dealer didn't not give loaner car had to wait 3 months for repairs to be done in the amount of $3889.43. Then in Oct of the same year while on a trip same knocking noise was heard then engine stopped running. Had the car towed to a dealer in Canada, dealer told us that it was engine failure. We told them that according to mid island Hyundai we got a "new engine". repair were made on the car no charge, had to return to new your in a retail car that was was paid out of pocket. Last month we receive a letter stating that car is being recalled do to the "short block" and other issues with the engine. Letter states that if knocking noise was hear coming form the engine to immediately take it to be serviced. I'm sending this compliant letter so I could be reimburse the full amount of the previous repair done in 2012 of $3889.43. Do to the fact that it wasn't my "lack of maintenance" but do to poor manufacturing of Hyundai. Spoke to a rep regarding this issue, she gave me this case number 8404334. Please contact me at 631-872-1587 or email me at sedano09@hotmail.com I'm also uploading all paper work regarding repairs and recall letter.

- Selden, NY, USA

problem #217

Oct 012015

Sonata

  • miles
The contact owns a 2011 Hyundai Sonata. The contact received notification of NHTSA campaign number: 15V568000 (engine); however, the part to do the repair was unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The VIN was unknown. The contact had not experienced a failure.

- Drexel Hill, PA, USA

problem #216

Dec 082015

Sonata

  • 79,000 miles
There was a recall on the brake switch for 2011 Sonatas. Coincidentally, I am having the issue on my car. Although I have to pay $200 out of pocket for this, I should be reimbursed as this is not coincidental and it should have been recalled on my vehicle. Now the engine is being recalled. This vehicle is terrible and unsafe!

- Fort Wayne, IN, USA

problem #215

Oct 092015

Sonata

  • 1,113 miles
The contact owns a 2011 Hyundai Sonata. The contact stated that the engine experienced stalling while driving approximately 55 mph. The vehicle was taken to the dealer where the failure could not be diagnosed. The contact received notification of NHTSA campaign number: 15V568000 (engine )however, the part to do the repair was unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the failure. The failure mileage was approximately 1,113. Parts distribution disconnect.

- Melvin, KY, USA

problem #214

Nov 022015

Sonata

  • miles

A D V E R T I S E M E N T S

The contact owns a 2011 Hyundai Sonata. The contact received notification of NHTSA campaign number: 15V568000 (engine) however, the part to do the repair was unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. VIN toll confirms parts not available.

- North Augusta, SC, USA

problem #213

Dec 012015

Sonata 4-cyl

  • miles
2011 Hyundai Sonata. Consumer writes in regards to engine recall notice. The consumer stated the engine blew, not long after the warranty ended. The consumer received recall 15V568000 after the fact.

- Walton, KY, USA

problem #212

Dec 032015

Sonata 4-cyl

  • 17,200 miles
The contact owns a 2011 Hyundai Sonata. While starting the engine, a loud noise emitted from under the hood and smoke released from the exhaust system. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was 17,200. Updated 02/19/16 the consumer also stated there was a recall on the brakes. Update 02/22/16.

- Lake Wylie, SC, USA

problem #211

Oct 132013

Sonata

  • miles
For the last 2.2 years my Sonata limited has not kept a stable coolant level. We first noticed the problem when on a trip in Arizona when we checked the oil just to be safe. I was about 1K from needing an oil change. We added 50/50 coolant and drove home and immediately made an appt with the dealership. They said they didn't find a problem and sent me away. This issue continued, coolant would be low or gone between oil changes (3K miles). I have taken the car back at least 4 times and although they have "fixed" a couple of potential issues, the problem persists. I have lived in extremely warm climates all of my life and I have never had a car where the coolant seemed to vanish for no reason and not leave a trace. I am now at 52,370 miles and am concerned that there may be damage and I will not have a warranty soon. I am considering the song-beverly warranty rights. Please help!

- Azusa, CA, USA

problem #210

Aug 032015

Sonata

  • miles
The contact owns a 2011 Hyundai Sonata. The contact received notification of NHTSA campaign number: 15V568000 (engine); however, the parts to do the repair were unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure. The VIN was unavailable. Parts distribution disconnect.

- Jacksonville, FL, USA

problem #209

Nov 292015

Sonata

  • 45,100 miles
I have owned this car for 4 1/2 years and it is my everyday vehicle. I entered the vehicle and started it like any other day and proceeded to drive to my destination. As I was traveling, acceleration felt normal. I went through an intersection, making a left hand turn and continuing on. Upon coming to the next intersection, the light turned red so I came to a complete stop. As I did, I looked across the dashboard and noticed suddenly every possible indication signal was lit. As the light turned green I attempted to use the gas pedal to start driving forward only to find that the gas pedal had suddenly gone stiff and it was clear that the engine was off. I was forced to put the car into park, return the key to its starting position and restart the car entirely. I then continued on my way but very cautiously leery after this episode. I continued on for another couple of miles and as I saw traffic ahead of me I began to slowly engage the parking break to start decelerating slowly and all of a sudden the engine stalled and cut off again, this time while the car was still traveling! I desperately used all of my strength to press on the again stiff break pedal while finally thinking to use my other foot to attempt to engage the emergency break as the car was still in motion and cars were coming to a complete stop just ahead of me! Hyundai has stated recently that there is a known recall involving similar malfunctions but tells me that it is not "finalized" and the "vehicle is completely drivable while they work on this" and I was advised I would have to pay out of pocket to even have the inspection done at this time.

- Phoenix, AZ, USA

problem #208

Oct 012015

Sonata

  • miles
The contact owns a 2011 Hyundai Sonata. The contact received notification of NHTSA campaign number: 15V568000 (engine) however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

- Miami, FL, USA

problem #207

Nov 172015

Sonata

  • miles
The contact owns a 2011 Hyundai Sonata. The contact received a notification for NHTSA campaign number: 15V568000 (engine). However, the remedy for the recall was not yet available. The contact believed that the manufacturer had exceeded a reasonable amount of time for the recall repairs. The dealer was contacted, who made the contact aware that until a remedy was determined they were unable to provide any assistance. The manufacturer was made aware of the delay. The contact had not experienced the failure listed in the recall. VIN tool confirms parts not available.

- Powhatan, VA, USA

problem #206

Mar 072015

Sonata

  • 58,000 miles
Called Hyundai to find out steering column needs to be repaired. Employee then told me he wasn't sure why a recall hasn't been issued. He was currently working on a steering column for the same make and model as my vehicle. Engine has recall waiting on final results. Engine stalled and is loud.

- Locust Grove, GA, USA

problem #205

May 152015

Sonata

  • 110,000 miles
The contact owns a 2011 Hyundai Sonata. While driving at approximately 55 mph, the engine stalled without warning. The vehicle was towed to an independent mechanic where it was diagnosed that the engine failed and needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The VIN was included in NHTSA campaign number: 15V56800 (engine); however, the part to do the repair was unavailable. The failure mileage was approximately 110,000.

- Bear, DE, USA

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