Sunroof shattered/exploded for no known reason while driving. Resulted in glass falling towards cabin of vehicle as well as loud bang.

- North Attleborough, MA, USA

I have a 2020 Hyundai Sonata limited, recently at 68,089 miles on the odometer my wife was driving and got an engine overheat light and noticed thick white smoke puffing out the exhaust pipe. I told her to pull over when she called me and have it towed to the dealer. Soon after I went to the dealer to look at it because they were saying it would be weeks before they could look at it, and I noticed the coolant reservoir was empty. So, I filled up the reservoir and took it home. Over the next few weeks of driving I noticed the same puffs of white smoke coming out the exhaust every so often and the coolant reservoir draining in a couple days, even though there never was any visible leakage under the car when it was parked. So after a couple weeks of having to top off the coolant every other day I took it back to the dealer and told them what was happening. They were not sure what to do, after a week of troubleshooting they ended up replacing the whole muffler assembly under warranty to fix the issue. So far that seems to have worked. I'm reporting this, because I want NHTSA to investigate these models Hyundai Sonata hybrids 2020-2023 and get Hyundai to engineer a recall solution to this issue, because there seems like hundreds of stories on the internet of people having the exact same issue with these car models. I'm not sure replacing the muffler is a long term solution, unless the replacement mufflers were redesigned. If they are replacing them with simply a new muffler, with the same design flaws as the original I think it will likely fail again just like the original. My car is now at 70,800 miles and the issue seems to be fixed, but I have read many stories on the internet of people having 2 or 3 muffler assemblies replaced on these vehicles and the issue continues to reoccur.

- Locust Grove, VA, USA

Hyundai updated the software for the display and made the font smaller which makes it difficult to read and a safety issue especially when driving at night. I contacted Hyundai and they say that if it is not in the owners manual there is nothing they can do. I have tried to explain to them it is a software issue that came about when their software engineers updated the software and it makes this a safety issue and they have no way to revert back to previous versions.

- San Augustine, TX, USA

Paint on hood of car is peeling off, down to bare metal

- Keystone Heights, FL, USA

My car is a Hyundai sonata hybrid (non plug in) 2020. the issue I have is that when the car transitions from electric motor to the gas engine there can be a small delay resulting in the car not picking up and causing me to almost get hit in different scenarios. (I have not had this checked with a mechanic, Also there was no warning signs from the car indicating that there was a issue)

- Lakewood, NJ, USA

The AC Fan in my car quit working. Took it to a repair shop where I was told that the AC Blower Motor went bad. The blower motor was drawing too much amps and caused the blower motor fuse to melt into the wiring harness for the blower motor along with melting several other fuses nearby including the fuse box. The cost to repair this correctly fixing and addressing all parts damaged was $5000. Because my vehicle is out of warranty due to mileage I contacted Hyundai who stated that I had to go and pay another diagnostic fee at a Hyundai Dealership to have them look at it. They continued to tell me that the vehicle was out of warranty but would not assist in providing information to get the issue resolved at no cost to me.

- Cookeville, TN, USA

while driving to work on 05.20.2022 my sunroof exploded for no apparent reason. I called my insurance company and they told me to take it to my dealership. so I did.

- Canal Winchester, OH, USA

- Shifter system malfunction - Unable to use the shift buttons - Received system error on dashboard that read, "Shifter malfunction! Service immediately." Visited two dealership, who saw a photo of the system error message. Vehicle was inspected by the dealership; however, no support could be given due to the dealership not having a code for the issue. - Dealership was made aware of the issue back in November 2021; however, first available appointment with technician was not until January 2022.

- Marietta, GA, USA

Driving on the Interstate at 65mph the car suddenly goes down to 5mph. Unwanted deceleration! At the same time the dash warning lights come on. Check engine and ABS. This happened 3 times now. 2 times on the Interstate in heavy traffic and once going 35mph on a back road. Miraculously we were able to pull over without any cars slamming into us. This unwanted deceleration happened on July 28, August 18 and Sept 13. Each time after pulling to a safe area we turned the engine off, waited a few minutes and turned it back on. Then resumed normal driving speed. Brought it to the dealer after each time. This shut down started after the car was only 4 months old with 2,983 miles on it.First time they said they couldn't find anything wrong and reset the computer, said if it happens again they will look into it more. The second time they replaced a Body Assy-Throttle and Gasket. The 3rd time they replaced the front wiring assembly control. I have all the repair paper work. We were driving playing Russian roulette wondering when it will happen again. With cars speeding around us we were lucky no one was close on our tail. This is an extremely dangerous situation. Each time it was beautiful sunny weather, two times heading to the beach, 3rd time heading to NH after 2 hrs of driving and one hour stopped, resumed driving for 20 min when it happened. No common denominator. I hope that this is not happening to others. I have reported this issue to Hyundai Motors America and they have offered me $500 and 60 days to release them from any liability or claim. Since I just got my car back finally Sept 20th, I certainly can't say my concerns have been resolved.

- Norwich, CT, USA

The automatic shut off. When the car is locked I can run it for a total of 20 minutes with auto start, when it's unlocked I can run it for a total of 60 minutes. Sometimes because of my job I need to auto start it and run it for longer to either warm up or cool down and it is unsafe to leave it unlocked. There should be an option for me to turn off the time limit and not have it reset every time I restart the car! When I'm shopping and I need to leave my dog inside for instance and it's 91 degrees outside, I should be able to lock my car and let it run for as long as I need to be in the store without worry it will shut off with him inside and suffocate him in the heat. This is another HUGE safety issue!

- Kalispell, MT, USA

The Contact owns a 2020 Hyundai Sonata. The contact stated while driving 60 mph, the vehicle abruptly decelerated to 30 mph. The contact also stated that previously the windshield wipers failed and the driver-€™s side window failed to roll all the way up. The vehicle was towed to the dealer to be diagnosed. The mechanic was unable to retrieve a diagnostic trouble code. The contact stated that the dealer could repair the driver-€™s side window and windshield wipers. The manufacturer was contacted and informed of the failure. The failure mileage was 16,000.

- Chelmsford, MA, USA

The vehicle's fuel gauge (type C) does not accurately adjust for changes in the amount of gas in a timely manner. It normally takes 2-3 days for the gauge to move to full tank even though it is full. Same problem from 1/4 to 1/2 tank, etc. For example, I noticed the panel said I had 11 miles to empty on Friday. The gas gauge showed otherwise. I wasn't near my usual fill station, so I put 5 gallons of gas in the car. It is now Wednesday (5 days later). The gas gauge moved slightly yesterday to almost 1/4 tank, but the fuel tank warning went from 11 to 0 miles left to empty (see attachment). I drove on the highway each day and in the city. I purchased this car July 2020 with a full tank. This problem became evident in Aug 2020. After refilling the tank, the reader showed 111 miles to empty. I informed Hyundai agent of the issue, who had no idea why this was happening. The guage and fuel tank reader finally adjusted after about 3 days. I had 449 miles on the car at that time. I now have over 4,000 with same problem. Apparently, something is faulty, but I don't know what. Auto dealer is baffled. This issue could result in a real fuel shortage while traveling with no gas station nearby.

- Chesapeake, VA, USA

Pushed the park button, showed P on the dash indicator, doors then unlocked. When exited vehicle it began rolling backward, park had not engaged slight hill only. This has happened repeatedly. Pushed button to place the car into reverse and the vehicle would not engage or go anywhere.

- Wentzville, MO, USA

Engine block became infested with rats/mice overnight. I believe this was the result of soy-based components used by Hyundai. No other cars on my block had this problem (I was able to survey the vehicle owners because we all were there waiting for street cleaning to occur.) it seems obvious that the rats/mice were attracted by the materials used by Hyundai and anecdotal reports suggest this is a chronic problem among many car manufacturers, but especially ones that use soy based components such as Hyundai, Land Rover, and Honda.

- New York, NY, USA

The car while I'm driving sometimes the car is unstable also when I turn on the car and I prepare to put it on drive the car apply the emergency brakes by itself. The emergency brake light is on and there is no way to remove it, I have to turn the car on and off continually until finally the car removes the brakes. I was driving on the highway and on the street and while I was doing so the car put on the brakes by itself. One to two months ago I took the car to the dealer and I told them about it but they said that the care needs 2 updates, apparently the car has two recalls. 6 hours later after the update the care wasn't working properly and they kept the car for 3 to 4 days, I got a loner by then. Last week Wednesday 08/05/2020 I took the car again to report the problem and I was told the care would be ready in 5 hours but after 5 hours it wasn't. since I didn't feel safe in the car I told them to keep the car and give me a loaner because the car is going to take one week to fix because they have to order parts, they want to keep the car but they didn't want to give me a loaner. I contact Hyundai corporate to report this incident because it is twice already, and I was told that someone would be in contact with me in the next 48 hours. I missed the call and I have been trying to call to get in contact with them again to fix the problem but every time I call they come with another excuse. The case manager in charge of the case is garrison and the case number 17216875.

- Brooklyn, NY, USA

Rear doors retain water every time it rains. When you open the rear doors water drains out of the car. Brought car to Hyundai dealership who verified the problem and confirmed the problem with other new cars on their lot, on April 21, 2020. Dealership contacted Hyundai corporate for guidance and there has been no response to date.

- Nashua, NH, USA

When it rains water gets inside the doors while parked. Especially the back doors. If it rains hard a cup full of water will come out the door upon opening. I've been told it's a design flaw. I've had it looked at twice and it's still not fixed. Customer service can't have someone come out and look and it because of the virus, so there's nothing that they can do.

- Foster, RI, USA