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:
18 / 84
Injuries / Deaths:
15 / 0
Average Mileage:
71,895 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

Find something helpful? Spread the word.
Get notified about new defects, investigations, recalls & lawsuits for the 2011 Hyundai Sonata:

Unsubscribe any time. We don't sell/share your email.

2011 Hyundai Sonata Owner Comments (Page 4 of 46)

« Read the previous 20 complaints

problem #857

Mar 242023

Sonata

  • miles

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

My engine stop suddently and it wont start it seems like its stuck

- El Paso, TX, USA

problem #856

Jun 062023

Sonata

  • miles
Engine seized at 87337 miles today. Fuel gauge wrong. Left us stranded on the interstate for 3 hours. Couldn't get it off highyway without pushing. No warning or lights before engine blew. All fluid levels correct. Silver Rock and Carvana refuse repair.

- Pima, AZ, USA

problem #855

May 012023

Sonata

  • miles
My engine is knocking/tapping

- Grenada, MS, USA

problem #854

May 022023

Sonata

  • miles

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

The alternator and battery of this vehicle has been switched at least 3 times. Purchased new and all, yet the car keeps getting drained and left powerless. Something is draining the energy of the vehicle and the root to the problem is not known.

- Hialeah, FL, USA

problem #853

Feb 162023

Sonata

  • miles
My engine was replaced under warranty due to the major Theta engine recall, after 20k miles on the new engine its failing too, burning oil, smoking, making loud valve train noise on acceleration, and at time operates very sluggishly and strangely no engine codes, almost like my engine code system was programmed to ignore these issues. My new replaced engine seems to be failing again and they don't care. I'm afraid this car will catastrophically fail or catch fire like I've been reading about.. Because its past the 12k warranty they are declining to fix,12k warranty REALLY "?"!! Here's my concern, I am hearing many many, many stories from others and even the dealer people that Hyundai is replacing the recall engines with BAD faulty engines, some I've heard have received 3 engines. My dealer lied to me saying it was a PCV, the PCV valve was replaced and my engine is still failing like the first engine. Please help, Hyundai is basically getting away with ignoring the recall settlement by replacing the engines with still known faulty engines !

- Corona, CA, USA

problem #852

Apr 112023

Sonata

  • miles
I was accelerating from a county road onto a state road, and the engine quit. The dash board displayed a bunch of tiny colored symbols of which I hadn't seen before. I coasted and pulled into an Elementary School parking lot and braked to a stop. I attempted to restart but got nothing. I smelled something and got out and opened the hood. The bottom end of the motor was on fire! I flagged down a lady and described my situation. She was the principal and went to get a matinance man with a extinguisher. Soon, two guys with water bottles stopped and extinguisher the flames. The principal and matinance man arrived and the guys pushed my Sonata into a parking spot. The principal (nice lady) gave me a ride home. I bought it used, no warranty, from a used car lot. I still owe a lot on it. Up until that point, I liked the car as so did my friends. Having full coverage insurance on it, I'm waiting to see what Allstate is going to do. This happened this past Friday, first week of April in the evening.

- Westville , IN, USA

problem #851

Jan 012020

Sonata

  • 113,329 miles

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

Smell of fuel & starting issues. The car has been taken to the dealer multiple times regarding gas fumes and they could not find anything. And it is currently at a mechanic shop to for same reason. When you start the car it doesnt take long before the whole car smells like gas & the smell is so strong it is suffocating. The car is health & fire risk. Also the car sometimes doesnt want to start for days but the starter, battery, alternator all work & even the mechanic doesnt know whats wrong with it. Apperantly there is no recall & if you search online there are alot of people with same cars complaining about gas smell & starting issues..

- Lake Ronkonkoma, NY, USA

problem #850

Apr 022023

Sonata

  • 50,000 miles
The contact owns a 2011 Hyundai Sonata. The contact stated while driving 15 MPH and making a left turn, the vehicle lost motive power and stalled. The contact was able to coast into a parking lot. The engine, oil, air bag, traction control, and ABS warning lights were illuminated. The vehicle was towed to an independent mechanic who informed the contact that the engine had seized. The vehicle was towed to the local dealer who informed the contact that it would be four to five weeks before being serviced. The vehicle was not diagnosed or repaired. The contact stated that the engine was previously replaced in 2018. The manufacturer was notified and provided a case number. The failure mileage was approximately 50,000.

- Winston Salem, NC, USA

problem #849

Mar 012023

Sonata 4-cyl

  • miles
The NHTSA has filed a Consent Order (RQ17-004) for a Engine Replacement due to safety concerns while driving the vehicle on the road, Vehicle may stall and cause / be involved in a accident. Please make this recall public so the affected vehicles can be properly repaired as the Consent Order states I have reviewed the Consent Order and I will not continue to drive this vehicle, I will not risk being involved in a accident The Hyundai dealership in Alexandria Virginia has refused to repair this recall under the Consent Order, My vehicle Vin# is [XXX] My vehicle has been at this dealership location for over 3 weeks and I was told that they were not going to perform this recall and I noted that If I pick up my vehicle and drive it away and the engine fails, stalls or stops in the middle of the highway and I survive I will have to file a lawsuit in this matter and the dealership still told me to pick up my vehicle. INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

- Fort Washington, MD, USA

problem #848

Feb 232023

Sonata

  • miles
I'm smelling has from under the car and it's got a ticking sound and burning oil it looks like

- Deer Lodge, TN, USA

problem #847

Feb 202023

Sonata

  • miles

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

While driving on highway gas pedal failed and engine turned off. Vehicle had to coast slowly. Attempts to start car worked but could not go faster than 10 miles per hour.

- San Jose, CA, USA

problem #846

Nov 152022

Sonata

  • 160,000 miles
The contact owns a 2011 Hyundai Sonata. The contact stated that while driving at an undisclosed speed, the vehicle lost motive power and stalled. The vehicle was taken to an independent mechanic and was diagnosed with engine failure. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 160,000.

- Fort Campbell, KY, USA

problem #845

Jan 202023

Sonata

  • 62,000 miles
The contact owns a 2011 Hyundai Sonata. The contact stated while driving 60 MPH, the vehicle started stalling without warning. The contact pulled over on the side of the road and the vehicle lost motive power and stalled. The contact attempted to restart the vehicle however, the vehicle failed to restart. The vehicle was towed to an independent mechanic and the contact was informed that the vehicle had experienced the failure listed in NHTSA Campaign Number: 15V568000 (Engine). The contact was referred to the dealer for assistance. The vehicle was towed to the dealer. The manufacturer was contacted and stated that the vehicle needed to be diagnosed by an authorized dealer. The vehicle was not repaired. The failure mileage was 62,000.

- Columbia, SC, USA

problem #844

Jan 202023

Sonata

  • miles
Engine stalled and shut off and wouldn-??t start again

- Columbia , SC, USA

problem #843

Feb 012023

Sonata

  • miles
The car suddenly stopped idling while driving at around 40-45 mph and everything seemed normal until it would not drive but the car was on and then the steering was difficult to pull over to a safe area and the brakes were hard to brake and stop but when it came to a full stop the vehicle dash warning lights were flickering and shut off. When I tried to attempt and start the vehicle it would not start but everything turns on ike normal al the lights except the engine was not on. Also it started smelling like some sort of electrical components were burning or something but I couldn't see any smoke or anything coming from the engine area but it seemed like electrical burn somewhere in the car. The vehicle is very unsafe to drive since there was no kind of warning lights or sounds and just stopped working while driving. The vehicle is well maintained and up to date with maintenance services. It became inoperable and had to be towed home since I ended up stuck in a unsafe spot in the middle of a busy street and waited hours for someone to tow it back to my house because it was already about 1 or 2 in the morning. The next day had hired a mechanic to come and do the diagnostics and repairs and still doesn't start or drive and I had to hire another mechanic to diagnose the problem again and was told that the motor is seized and I would need a new engine and other work done on it as well and so me and my family are stuck without a car which is our only car and no more money to fix the car and have no way to bring my child to school and also take my wife to work and etc etc since this problem and don't know what's wrong with it after spending so much money trying to have it fixed so possibly a lemon car.

- Vallejo, CA, USA

problem #842

Jan 262023

Sonata

  • miles
Unknown

- Columbus, OH, USA

problem #841

Sep 112020

Sonata

  • miles
I was driving my 2011 Hyundai Sonota and it felt like a truck had slammed into the back of my vehicle but it didn-??t, the car was knocking and finally stopped and wouldn-??t accelerate when pushing the pedal. I had to have it towed and the shop didn-??t know what to do and I had it sent to Rick Case Hyundai and I explained the situation about the debris being washed out of the engine and they asked for $1700 just to look at the engine. I had a few recalls and they should have looked at the engine with no problems and no charges. They had my vehicle towed and it took me a few months to figure out what happened to my car? I have been denied EVERYTHING BY HYUNDAI CORPORATE AND TAMMY OFFERED TO LOOK AT THE ENGINE AFTER SENDING THE INFORMATION TO BBB AND SHE SAID SHE WOULD DO IT FREE OF CHARGE BECAUSE THERE IS A RECALL ON THE END

- Social Circle , GA, USA

problem #840

Nov 012022

Sonata

  • 180,000 miles
The contact owns a 2011 Hyundai Sonata. The contact stated that while driving at an undetermined speed, there was an abnormal rattling and ticking noise detected. The air bag warning light illuminated. The vehicle was taken to the local dealer where it was diagnosed that an engine replacement was needed. The dealer requested the maintenance records but denied repair coverage due to old oil in the vehicle. The manufacturer was not contacted. The approximate failure mileage was 180,000.

- Los Angeles, CA, USA

problem #839

Nov 292022

Sonata

  • miles
My husband was accelerating onto a highway and the engine failed. He was able to pull to the shoulder and brake to a stop. He was not able to start the car. He had the car towed to our mechanic and the mechanic reported that the engine seized, the engine had oil in it, and we needed to bring the car to the dealer to have it looked at. There were no lights, sounds, or warnings that there was a problem with the engine. This is the second engine failure for this car. The first failure was a fire and the engine was replaced. The dealer stated that it would take 3 weeks before they could look at the car. We brought it in 3 weeks later, 12/19/22. No-one has looked at the car. We don't know what the problem is, because they still have not looked at it.

- Parlin, NJ, USA

problem #838

Nov 292022

Sonata

  • miles
Engine seased up out of no where in the middle of an intersection no sounds nothing just stopped running

- Port Orchard, WA, USA

Read the next 20 complaints »

Not what you are looking for?