The car seized up and died when going up a hill

- Woodmere, NY, USA

The contact owns a 2015 Hyundai Sonata. The contact stated that while driving, he heard a rattling noise under the hood. The contact stated also mentioned while taking the vehicle to be serviced for an oil change, the rattling noise began to make a loud knocking noise. The check engine warning light illuminated. The contact mentioned that the independent mechanic informed him that he should not drive the vehicle and that he needed to have the engine checked. The vehicle was then taken to dave hallman Hyundai at 2104 state St, erie, pa 16503, (814) 452-6731 where it was diagnosed that there was an oil sludge build-up and that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure but did not offer any further assistance. The failure mileage was 56,150.

- Union City, PA, USA

Cylinder one misfire causing vehicle to loose power while driving, significant shaking of vehicle. Vehicle had minimal acceleration. Check engine light flashing, remained illuminated when vehicle was safely maneuvered to highway shoulder. Required new spark plug and coil. Vehicle only has approximately 41,000 miles.

- Mooresboro, NC, USA

Takata recall......I was driving my car and I heard a loud noise, shortly thereafter, the car dashboard said that the car was running hot and it shut down in the middle of traffic. I rolled to a stop and put the car in park. I got out the car and look under the car to see if I saw anything because of the noise, and I didn't see anything. I popped the hood and noticed that the antifreeze level was not low and that the pressure was not tight on the radiator hose. So I could not understand why the car was running hot. I closed the hood and got back into the car and started the car back up because it appeared to have cool down. I drove the car to the nearest parking lot and called a tow truck to take the car to the dealership. Once the dealership look at the car, they noticed that the pulley was not on the alternator, the serpentine belt was at the bottom of the car and that was the reason the car was running hot. They said they have never seen anything like that before. New car with only 66,000 miles on it and the pulley on the alternator is completely off while driving is not safe. In rush hour traffic in the city, is not safe for me and my kids.

- Mabelvale, AR, USA

I was on a city street approaching a red light, as I was coming to a stop my car's engine shut off without warning. Oil light, check engine light, and battery light were illuminated. I put my hazards on, put the car in park and attempted to re-start the car with no luck. Car did not make any turning over sounds when trying to re-start. Dashboard lights, radio, powers windows still worked. I called roadside assistance and waited in my car blocking one lane of traffic. After about 10 minutes a passerby pushed my car to the side of the road, at this time I noticed it was very hard to steer and the brakes started to lock up. I put the car in park and waited for the tow truck. While waiting I made several attempts to re-start the car. After about 30 minutes the car restarted and I was able to drive the 3 blocks home. The following morning I had the car towed to the dealership. I was told they couldn't find anything wrong with the vehicle. They could not recreate the issue and no error codes showed up. There were also no error coeds in the log but if the engine shut down it seems like something should be in the log. I'm extremely nervous to drive thinking this can happen again in a more dire situation (like on the freeway). I see other complaints online with this same situation and am concerned for mine and my passengers' safety.

- Oxnard, CA, USA

Performed oil changes at two different auto repair facilities within 4 day span. The reason for this is each service showed overfill on oil dipstick. Showed the service advisers at both facilities. I took vehicle to Hyundai dealer and purchased a replacement oil level indicator as per VIN. They say I had wrong dipstick for engine. Placed replacement dipstick in engine and showed Hyundai service rep that oil level still showed overfill. I had them change oil and they showed me that replacement dipstick registered correct oil level. So, either this engine is operating ( 38000 miles) at under fill, overfill or proper fill level. Been using manufacturers oil viscosity recommendation (5W-20 and dealer used 5W-30 syn/bld).

- San Antonio, TX, USA

Several times when moving from a stop the engine seems to die and starts up.

- Citrus Heights, CA, USA

At about 12:00 pm on 7 April 2017, I was stopped at a red light on a major thoroughfare (50 mph speed limit). When the light turned green, I depressed the gas pedal, but the vehicle failed to move. Instead, it hesitated, bucked a bit, and then lost power altogether. I put the car in neutral and, after a couple of tries, the car restarted. As I accelerated, the car exhibited more hesitation, then operated normally. Ironically, I was on the way to the local Hyundai dealer to pick up our other vehicle and made it there. I reported the problem to the dealer and turned it over to them for diagnosis/repair. The dealer could neither detect any problem nor duplicate the incident. According to their write-up: "scanned for codes. No dtcs at this time. Fuel pressure is normal. 10 mile test drive and update has already been completed....unable to duplicate..." this morning, I learned that Hyundai has recalled 1.2 million vehicles and symptoms of the problem are exactly those that my vehicle exhibited. However, my vehicle is a 2015 model and does not appear to be covered by the recall, notwithstanding the problem I experienced yesterday. In any case, my vehicle has only 26K miles and has been well maintained by the dealer. I suspect it has the problem for which Hyundai is now recalling over a million vehicles.

- Crofton, MD, USA

I purchased new '15 Sonata, my 8th one, but I have not nothing but problems with it. This dealership did all maintenance & repairs & had car a total of 7 times for the same complaint of the car 'bucking, ' like it is hard to shift into the next gear.I was told it was a computer part & it had been replaced, yet the problem continued, other times I was told there nothing could be detected as wrong. My 7th trip, the dealership kept it for 6-7 weeks when they determined the transmission clutch was defective, then they 'lost' the new transmission, before finally fixed it. I drive 100 miles daily to & from work am fearful that something would be wrong. I was almost rear ended by a far away 18 wheeler when the car would not forward. I reported all of this to the dealership. I requested to speak with general manager at least 3 times & was always told he was out, the last time I saw him leave after saying he was not there. So, after the transmission was 'fixed' in February. I called corporate & was told this is the way this vehicle drives as it has a semi-automatic transmission. I am driving a rental with same engine & does not behave like my mine. Within a few days, the car began stalling when trying to excel and the 'check engine light' came on. On the interstate, we slowed down and again it would not go forward. I brought it to another dealership & it has been in the shop for two weeks (March 25th) & they cannot figure out the problem. Corporate offered me $500 in 'free' service due to it the problems. I do not think that is compensation. Corp has agreed to buy car back approx. 2-3 wks ago due to continued problems. I was told the entire process would take 6-8 weeks. I have emailed/called since it is in the shop to expedite the process without response.

- St. Amant, LA, USA

Complete engine failure while driving. No warning and it did not trigger the check engine light

- Proctorville, OH, USA

Car hesitates almost stalls from a stopped position. Almost caused someone to rear end me.

- Citrus Heights, CA, USA

My vehicle shut down in September 2016 while I was driving it on the highway. I pulled off the road immediately and had it towed to the dealer. After numerous attempts they told me it needed a new engine. The entire process took a month and a half. After getting my vehicle back it was driving fine until 2 months later when it shut down while I was driving again. I pulled off the main road, turned it off, and when I turned it back on it worked fine so I drove it straight to the dealer. They told me there was a recall and so I left it there overnight. After getting my vehicle returned to me for the second time, I had it for about three weeks until it broke down again. Again while I was driving it and again on a main road. I pulled off to the side, turned it off and on, and drove it straight to the dealer. They said this time it was the "throttle body" and they would need it for one to two days. Not only do I feel completely unsafe driving this car as it could shut down any minute and cause an accident, but this marks the third time having the same issue with the vehicle. It causes me to take time out of my day and miss work causing me to lose money. It is extremely inconvenient and very frustrating. I do not use this car to drive with my kids anymore as I do not trust it with their lives.

- Miami, FL, USA

I was driving at 6:20 am on the New Jersey turnpike. I was in the left lane and going approximately 70 mph using the scc (smart cruise control). All of the sudden, the lights start flashing and the car completely turns off. Since it was before sunrise, everything was black and I couldn't even see where I was driving, not to mention that the steering wheel became locked. 10 seconds later, the care came back to "life". it did that same intro with the "system check" thing as it does when the car is started from a park position- only I was on the highway going 70 mph. I have never heard of something so absurd, but I guarantee that if this was during rush hour or a busier time during the day- there would have been a major accident!

- Highland Park, NJ, USA

Heat from turbo melted air intake tube

- Walnut, CA, USA

The hose leading to the turbo has melted off. The clamp with hose rubber remain firmly attached to the turbo with the remainder of the hose has fallen below the turbo air inlet. The issue occurred suddenly from one night to the next morning. Under load, the turbo operational noise was extremely loud compared to usual.

- Peachtree City, GA, USA

The contact owns a 2015 Hyundai Sonata. The contact stated that the vehicle failed to accelerate over 40 mph. The check engine warning indicator illuminated. The failure recurred on numerous occasions. The vehicle was towed to a dealer where it was diagnosed several times with oil leaking into the housing. The seals were resealed and the housing was replaced several times, but the failure recurred. The vehicle was towed to the dealer again where it was diagnosed that oil was leaking into the housing unit and caused acceleration failure. The gear needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the issue. The failure mileage was 22,000.

- Jonesboro, ME, USA

The contact owns a 2015 Hyundai Sonata. While backing out of a parking space, the engine suddenly revved and the vehicle accelerated approximately 25 feet. The contact's vehicle crashed into a Jeep and damaged three other vehicle. The failure occurred multiple times prior to this incident and the manufacturer was notified. A police report was filed and there were no injuries. The approximate failure mileage was 13,300.

- Tulsa, OK, USA

White driving either in motion or stopped behind a light, engine starts to shake and stall. This make the car share heavily and nudge forwards and backwards until the call stalls out. Then the dash gets lit up with all the check engine lights. Then, pressing the start button multiple times until the vehicles starts. The car does this every so often. You drive off, it shakes and stalls, it has a hard time starting. Then it starts and everything seems normal. This happens at least 1 or 2 times a month. Currently vehicle at deal service to see what is going on. Google search resulted in other with similar issues. See link below if necessary. "www.carcomplaints.com/Hyundai/Sonata/2015/engine/engine.shtml"

- Irvine, CA, USA

Me and my wife were driving to southern California on a road trip. When accelerating uphill, the transmission downshifted to above 3,500 RPM's. immediately the fuel cutoff and the car would not accelerate. I tried several times but noticed the car would not accelerate past 3,500 RPM's. I immediately went to manual mode and selected a gear that was below 3,500 to make it up the "grapevine" hill. Soon after the check engine light came on. I went to the dealer the next day and they said it was the vcm motor- code P0200A. It was replaced under warranty. The dealer service was great. We were lucky this malfunction didn't happen when my wife was driving alone and needed to pass another vehicle or drive uphill. She would not have been able to accelerate.

- Riverside, CA, USA

While stationary I noticed the car's engine sounded like it was ticking. I drove off about 35 miles per hour when my 2015 Hyundai Sonata limited stalled while driving. The car started shaking while attempting to speed up to keep the vehicle running. I had my passenger who witnessed the incident and we recorded using the cell phone to record the incident. The engine light came on then off again. Eventually it cut off completely. I had to restart and the speed of the vehicle would not go past 50 mph. The engine shook the entire car and sounded like the gears did not want to shift. The dealer was not able to replicate the issue or find any codes on their system. This same thing happen to my 2011 Sonata in which Hyundai refuse to pay in a class action lawsuit because I traded out of the vehicle a year after they replaced the engine. The engine also stalled while traveling at highway speed and started smelling like an electrical fire while smoke came from under the engine. I had to have it towed back to the dealership.

- Forestville, MD, USA