2018 HYUNDAI SONATA Unknown Or Other Problems

Intermittent no-crank, no-start condition. Dash lights illuminate, push-button start produces no response. Brake pedal applied. Vehicle becomes immobilized without warning. I’ve been stranded on multiple occasions. Unable to commute to work, or home. Most recently on December 19,2025 the car completely shut off while driving on the highway.

Excessive oil consumption. I am routinely getting notifications of low oil about 1,000 miles before the oil change is due. When I bring it in for an oil change it is nearly empty. No signs of leaks anywhere.

My starter failed after 35,683 miles leaving me stranded in a parking lot at night. The life expectancy for a starter is between 100,000and 150,000 miles. Hyundai replaced the part at a cost of $1,139 which is way above what it normally costs to replace a starter. The starter is at the dealership and is not available for inspection. Being stranded in a parking lot made me very uncomfortable and what if the starter had failed in a bad section of town. The problem was confirmed by a Hyundai dealership who replaced the part after I had my vehicle towed to their service department. The only ones who inspected the vehicle was a mechanic at the dealership. There wer no warning lamps or messages, but I did notice the car did not start on the first try before the starter failed. 07/29/2025

Check engine light keeps coming on got it looked at , certain parts replaced & it’s still on something to do with the air filter

When starting car warning lights came on for ABS, AEB, Cruise Control. Cruise control is locked out and not working due to these warnings.

⸻ In early 2024, I brought my vehicle to a Hyundai dealership due to rapid oil loss. I reported having to refill the oil weekly and suspected a leak. They diagnosed a cracked oil pan, claimed to fix it, and returned the car. However, immediately after, the car continued burning oil at an alarming rate. I was forced to buy and add oil every single week, spending hundreds of dollars to maintain drivability. Shortly after the repair, I began experiencing erratic dashboard warnings. The check engine light would frequently come on and off. The oil lamp illuminated every few days. These symptoms were persistent, not isolated incidents. Despite reporting the issue again, I was told the oil burning was “normal” for Hyundai engines and nothing to worry about. That response put my safety and my child’s safety at risk, as I was unknowingly driving a vehicle with worsening engine damage. Eventually, the car stopped running entirely. It was no longer drivable or safe. I took it to a licensed independent mechanic who confirmed there were multiple ongoing oil leaks and extensive engine damage. The issues I originally reported were never properly fixed, and it’s now clear the dealership failed to address the root cause of the oil consumption problem. I also noticed unusual spikes in the odometer after their repair, despite working from home and barely driving. This added further concern that the vehicle’s internal systems may have been compromised or malfunctioning. I believe Hyundai’s failure to act on clear warning signs directly led to this total engine failure and a serious safety risk.

Multiple critical mechanical and safety issues have occurred with my 2018 Hyundai Sonata Sport. The vehicle has experienced persistent engine misfire, a severe oil leak, emissions system failure, and extensive paint deterioration. A certified technician confirmed an active oil pan leak with no dashboard warning lights, posing a fire and stalling hazard. To prevent further damage, I replaced the entire oil pan and spark plugs at a personal cost of approximately $800 at Firestone Complete Auto Care. The check engine light revealed diagnostic code P0420 – Catalyst System Efficiency Below Threshold (Bank 1). An O’Reilly emissions scan confirmed the catalytic converter failure, and emissions status was marked “RED.” The vehicle will not pass an OBD-based emissions test. At 149,219 miles, Hyundai refused warranty coverage due to mileage. A certified Hyundai dealership quoted $3,722 to replace both the catalytic converter and valve cover gasket, which remains unaffordable and unrepaired. In addition, the factory-applied white paint began peeling severely from the hood and roof. Although Hyundai issued a warranty extension for this known defect, the dealership refused to repaint the hood, citing a minor dent — even though the peeling is clearly unrelated. The exposed metal has started to rust, risking structural deterioration. All concerns have been evaluated by certified Hyundai service and independent professionals. These combined mechanical, emissions, and exterior failures raise serious safety and durability concerns. I am filing this report to document manufacturer-related defects that may affect other owners of this model and year.

I have to put a quart of oil in every week. It burns oil.

Panoramic sunroof came loose on highway and bent up 90 degrees making vehicle undrivable.

When I bought the car from Mathews in Marion Ohio the car looked like it was already in some form of accident due to a previous owner and I was unaware what caused the accident or any other problems with the vehicle upon buying. I was not presented with a carfax. I have electrical tape at the bottom of my bumper and there’s a problem with acceleration. It accelerates by itself and veers right when I take my hand off the wheel. I’m afraid to drive my car on the highway. I have complained about this problem to Mathews twice. I am now in a loaner until they figure out what’s going on.

I looked up my car on carfax and it shows a 3 different odometer readings. on 10/14/19 it had 15.125 miles. On 03/04/21 it had 61,284 miles. On 02/01/2022 it had 30,371 miles And finally on 3/3/23 it had 38,269 miles. This clearly shows that somewhere along the line, the odometer was changed. My car has been on the shop on several occasions in the less than 2 year time frame

43000 miles on car. original owner. new battery. car does not cold start in the morning. all electronics light up, but engine doesn't start. This is a known issue from all the posts i found online, yet Hyundai has not issued a recall. I paid 300 for a battery 2 weeks ago and the issue didn't resolve. Now i am being told by dealer it is the starter and it's not covered because my 5 yr warranty is expired (my car is 6 years old). This is a known safety issue across the 2018 Sonata line. This should be a recall or bulletin, instead I have to come up with hundreds of dollars more to replace a starter on a car with ONLY 43,000 miles.

My 2018 Hyundai sonata with only 20,821 had to have the starter replaced on [XXX] because the car would not start. I had 3 different people including AAA road service to verify why it would not start and what the problem was. I end up having my car towed with AAA to a local mechanic shop, Mike Hepler auto repair St. Cloud Florida 34769 407-593-0152, and Mike did the diagnosis saying the starter was bad it was(fried) as he put it. He said he could replace it for $492.17 for part and labor which I accepted for him to do the job. I had left numerous messages (4)for my local Hyundai dealership service department to call me to let get a diagnosis and no one has ever called me back to give them my information or ask any questions.

The paint if pealing off in large sections due to a manufacturer defect in the primer. The flakes can fly onto the windshields of other vehicles causing collisions.

For now the fifth time in the last 16 months the HEV light and engine light has lit up while the car jerks and sputters and dies. Below is the incident report that I filed on or about August 8, 2022. Again at the end of the day yesterday on October 20, 2023 the same issues still arise for the fifth time. See below for a re-cap of the issues I am once again experiencing after Hyundai claims to have fixed the issues: For the fourth time the HEV light (and others) has come on and the dash has lit up while I was driving, with the last three times leaving us stranded in dangerous road situations with little or no power. The light first came on in July 2020 at 40,089 miles. A dealership reset the codes and I had no problems until June 7, 2022 when the lights lit up on the dash again and the car died and I had to have it towed to a local dealership. They could find nothing wrong with it and checked all the wiring and said none of the codes were coming up and that the car ran fine for them when test driving a day or two after I had it towed. So they released the car back to me deeming it good to go. Then only 19 days later on June 26, 2022 the HEV light among other lit up again and the dash indicated to pull over and cut the car off due to the hybrid system. I had it towed to the nearest dealership again. The then looked at it and said they reset all the codes and everything looked to be good to go. Then AGAIN on Aug 8, 2022 (3rd time in two months), we were put in a dangerous situation trying to get the car off a busy highway when the HEV light (and others) again lit up the dash and our power went almost completely out while the engine jerked violently as we tried to avoid being hit by cars while trying to get off the highway before it completely died on us. Four times now Hyundai dealers have shrugged this off saying "we reset the codes" and we can't find an issue. We have been put in dangerous traffic conditions three of these times.

UNKNOWN. I noticed that there was a check engine light on and I took it to autozone to have it checked out, they told me that it was coming back with the code of an o2 sensor. I thought nothing of it until it started not wanting to start right. On July 1, 2023 I took my car in to the dealership for an oil change and they never said anything about why my car was doing a delayed start. It would eventually start but it took at least a minute. I bought a new battery from walmart to put in my car so that it would not do the delayed start, but it kept doing it anyway. Finally decided to take it to a mechanic and the first time that he started it took at least a minute, he realized that he didn't have his computer (code reader) with him so he turned it off. When he returned with the code reader he plugged it in and started the car then it started smoking, smoking turned into fire that caused the entire underside of my hood to melt including engine, electrical harness, belts, battery and much more. If it wasn't for the mechanic's quick thinking by putting out the fire while calling 9-1-1, the fire would have gone to the fuel tank and exploded. Yes, the safety of others was put at risk.

This vehicle consumes one quart of oil every 1000 miles. I have documentation to prove it. Hyundai has done their own asessments and claimed that it consumes less. There was a class action lawsuit filed in California for this issue.

When driving the car on the highway - "check engine - hybrid system" warning lights come on and indicate hybrid system issue and to shut car off immediately. Extreme safety issue as the car goes from highway speeds to 35MPH almost instantly. This has happened seven times now and Hyundai keeps indicating that technicians are following engineering guidance in fixing the issue related to the knock sensor. The seventh occurrence happened on May 23rd of 2023. First one was in December 2021. As Hyundai is unable to correctly fix the issue I have repeatedly asked for them to replace the car since it is an extreme safety issue but they will not do so. Still waiting for diagnosis of the latest occurrence from May 23rd. Hyundai does not acknowledge that this issue is of safety concern and just indicates that the issue has been fixed each time it occurs.

During the drive, check engine lights on then suddenly, HEV warning lights with turn off the engine with critical alert sound. I was drove again after attempting to start several times then again & again... It freaked me out when I drove on the highway, and yet to fixed & afraid to go to the dealer becase of cost & uncertain reasons. This could be big accidents on the highway.

Mileage: 111,325

Hyundai boosted about their emergency response system included with my vehicle and charged extra. They failed to tell me that they were discontinuing the system. If I crash and need assistance bc I'm unconscious, I won't get it.

The White paint is peeling off the vehicle.

2018 Sonata has white paint peeling on hood of car - only 29,930 miles on car

2018 Hyundai Sonata Sport+ with 23K miles that has White Pearl exterior paint. The paint (W8 or WW8) is peeling off from several locations (Hood and Roof). This has been a know issue with this type of paint on Hyundai vehicles but manufacturer is not taking any responsibility that paint or paint job is defective. One can google this issue and thousands of user complaints are there of different forums and messaging boards. Example: https://community.cartalk.com/t/2018-hyundai-sonata-paint-peeling/185473/7 https://www.reddit.com/r/Hyundai/comments/zt5lsk/warranty_extension_for_1718_elantrasonata_white/

This car will not start when it is cold. I have only had this car for over one year and four months. The car ran perfect up until we began to have extreme cold weather. This is so dangerous because it could be an emergency and my car will not start. I have done my research and discovered that this is an ongoing issue with Hyundai. And nothing has been done about it.

For the past 3 Oil changes, I find myself having to add 5 quarts of oil to my car after driving over 1,000 miles from getting my oil change. This third oil change I have added 15 quarts of oil to my car due the check oil light comes on. When I first purchased this car in March 2021, I didn’t experience this issue. I’ve never had to add oil to my vehicle before an scheduled oil change. Whalen the oil is checked due to the light coming on, it’s boned dry.

We drive a 2018 Hyundai Sonata with Hyundai Quartz White Pearl (W8) paint. It has 62000, so just out of regular warranty. Last week I noticed that we were missing a huge chunk of paint on the roof. As a regular passenger of this car, neither of us noticed anything wrong with it until it was gone. It looked like it just bubbled up suddenly and peeled off. We took it into our local Hyundai Dealer and they told us it was out of the 36k mi. paint warranty. They didn't even look at it. We paid for an extended warranty because they served us so well on our other Hyundais up to that point. I called the consumer line like they suggested and found no recalls. When I tried to get a human, I was met with silence. No indication that the call had gone through. I went next door to there collision center and got an estimate anyway. The man there didn't have to see any more than one picture to know that it was a Hyundai. They service multiple of that owner's various different branded dealerships. Obviously, this wasn't his first rodeo with this problem. He quotes $1200 to put a bandaid on the problem. However, there are numerous incidents of consumers facing the same issue with there Hyundai/Kia vehicles. I have a friend who had the same problem on a similar year Acura with pearl paint. I'm filing this complaint because it is obvious that Hyundai/Kia are not going to own up to this. The first class action suit was dismissed and the problem persists. They are still using the paint to this day and the same delamination problems keep appearing. I do not want to be driving down the road and have a huge slab of paint fly off and hit someone else's windshield. This issue needs to be investigated before someone gets hurt, not after.

For the fourth time the HEV light (and others) has come on and the dash has lit up while I was driving, with the last three times leaving us stranded in dangerous road situations with little or no power. The light first came on in July 2020 at 40,089 miles. A dealership reset the codes and I had no problems until June 7, 2022 when the lights lit up on the dash again and the car died and I had to have it towed to a local dealership. They could find nothing wrong with it and checked all the wiring and said none of the codes were coming up and that the car ran fine for them when test driving a day or two after I had it towed. So they released the car back to me deeming it good to go. Then only 19 days later on June 26, 2022 the HEV light among other lit up again and the dash indicated to pull over and cut the car off due to the hybrid system. I had it towed to the nearest dealership again. The then looked at it and said they reset all the codes and everything looked to be good to go. Then AGAIN on Aug 8, 2022 (3rd time in two months), we were put in a dangerous situation trying to get the car off a busy highway when the HEV light (and others) again lit up the dash and our power went almost completely out while the engine jerked violently as we tried to avoid being hit by cars while trying to get off the highway before it completely died on us. Four times now Hyundai dealers have shrugged this off saying "we reset the codes" and we can't find an issue. We have been put in dangerous traffic conditions three of these times.

On the way home from the produce store today, the engine seemed to stall or seize while I was driving and the car reacted in a jerky manner. I kept going, as I was close to home, but could only travel about 20 mph, and it would periodically feel as if it were about to conk out. Check engine light came on at this point. Made it home, but no longer feel safe driving it. Am online now, searching for what to do. What I experienced sounds like the engine recall problem others have experienced, although my 2018 Hyundai Sonata is not on the recall list. Perhaps it should be.

Purchased a certified pre-owned 2018 Hyundai Sonata - found out recently the car is burning/losing oil- A few weeks after having an oil and filter change my oil warning light started flashing while driving.. Checked engine oil and could not believe that oil was almost empty.. Major concern is for major engine malfunction and possible locking up while driving- which could be fatal !!! Now I have to monitor oil levels/consumption every other day- I have contacted Hyundai and they're suggesting that I be without transportation while they take an undetermined amount of time to test the vehicle which is unacceptable !

The shark fin antenna assembly becomes dislodged from its base very easily and can fly off while driving or scraping ice off the roof with minimal force. Hyundai should do a better job attaching the outer shark fin plastic cover to its base.

THE OVERHEAD CONSOLE DOES NOT CLOSE. IT DOES IT ALL THE TIME. I KNOW THERE WAS A RECALL ON IT BUT NOT ON THE 2018 MODEL. IT IS A PROBLEM BECAUSE IT BLOCKS YOUR VIEW ON THE RIGHT SIDE THANK YOU

when the car is cold it would not start. I checked what the problem can be online and it turns out that there are a lot of out cars with the same problem. The problem is starter. sever people after changing the starter there vehicle was fixed. Another problem is sometimes the blind spot warning system does not work. These problems are reported by people with the same car but not by dealers.

UNKNOWN— Engine has been making noises, vehicle keeps breaking down (ENGINE ISSUES, alleged starter) and Hyundai dealerships keep ignoring and not documenting my complaints and passed the vehicle for all inspection after others have documented some of my complaints that I brought to them. They simply didn’t want to do any work because it was covered under bumper to bumper warranty until I threatened to call Hyundai USA with a lawyer and my engine problems were NEVER ADDRESSED or examined by the Hyundai Dealer in my area even though I specifically kept complaining about my car seizing and stopping on me in the middle of the highway with my toddler in the vehicle! It’s doing it again and no one at anything Hyundai cares! I’ve been lied to and passed on for over a year now and the problems list keep getting longer and longer! I was told that the Engine was replaced in March 2019 and that was that..I was dismissed! No more questions asked when I made my complaint directly to Hyundai USA this time!

I purchased my 2018 Sonata on 10/23/21 from South Point Austin with 30-35k miles on it. In the year of owning it, I've had 3 manufacture issues occur. Once on 12/31/20, there was an issue where my car detected an issue, and my maximum speed was 30 MPH while I was on the interstate. It was a sensor issue and covered by my manufacturer's warranty. On 11/11/21, I had to purchase a new starter for $789.26 despite this being a manufacture issue and covered by warranty. There was not a dealership in my area that would look into my car until 2022. They would not cover a rental until at least a diagnosis report came back which they would not begin until 2022. They said the lengthy waitlist for a rental would prevent me from securing a vehicle to use in the meantime. Because I need a functioning car, I had to purchase this out of pocket. On 11/23/21, I had to purchase a new battery. Again, this should be covered by factory warranty, but the dealerships would not look at my car until 2022. I paid $241.14 out of pocket for this. Setting the issue of these unexpected expenses aside, my car does not feel safe to drive and has had several manufacture complications. I had a near fatal accident in my previous Sonata do to a software issue causing the brakes to go out. This line of cars should be looked into for the safety of all.

The trunk latch released failed and is malfunctioned. My safety along side passengers were put at risk when the car experienced a flat tire on the highway far from city limits in extremely hot weather and trunk was not opening to get to spare tire/tools. Trunk had to be forcefully opened after hours to finally to get to spare/tools. There was no warnings prior to this failure.

Coding P0507 Idle air control system Rpm higher than expected P0441 Evaporator emissions incorrect purge flow P0420 Catalyst system below threshold

I am affected by the new decal in regards to my trunk latch and it urgently needs to be fix. It would not open after multiple attempts and a few days later it started working again and now that it’s open it will not close

1. Accelerator malfunctioned as I removed my foot to hit the brakes. The speed increased. When attempted to hit brakes, would not brake. The brake hardened up and car went through bank glass door and window. 2. It malfunctioned. 3. Vehicle is in the body shop. Will take to dealer when done 4. Police and insurance 5. No warnings

ONE OF MY CONTINENTAL PURE CONTACT TIRES FAILED AT HIGHWAY SPEED AT 4,926 MILES. ALL FOUR TIRES WERE PURCHASED NEW FROM MY DEALER ON 11/25/20. MILEAGE AT THAT TIME WAS 47,314. ON1/21/21 WITH AN ODOMETER READING OF 52,240, ONE TIRE DEVELOPED A LEAK AT THE INTERSECTION OF THE SIDEWALL AND TREAD -- THERE WAS NOTHING STUCK IN THE TIRE INDICATING A PUNCTURE -- YET THERE WAS A HOLE IN THE TIRE. THE TIRE COULD NOT BE FIXED SO I HAD TO BUY A DIFFERENT BRAND TIRE TO REPLACE IT BECAUSE THE TIRE SHOP DID NOT CARRY CONTINENTAL TIRES. WITH THE RECENT RECALL OF MANY TIRES BY CONTINENTAL, I AM CONCERNED THAT MY THREE REMAINING CONTINENTAL TIRES MAY NOT BE DEPENDABLE. I CONTACTED CONTINENTAL DIRECTLY AND WAS TOLD THAT THE PURE CONTACT TIRE IN MY SIZE (215/55SR17) IS NOT INCLUDED IN THE RECALL WHILE OTHER SIZES ARE INCLUDED.

Mileage: 52,240

TRUNK LATCH LOCKING ARM CAN BREAK WITH FEW MILES ON THE ODOMETER. WHEN THE ARM BREAKS DUE TO IT BEING PLASTIC CONNECTING TO METAL VIA A STRONG TENSION SPRING, THE EMERGENCY TRUNK RELEASE LEVER IS DEFEATED AND THE TRUNK CANNOT BE OPENED, OR CLOSED IF IT BROKE WHILE OPEN.

Mileage: 28,335

I RENT THIS CAR FROM TOWER RENTALS I PAID 1300$ DAY BEFORE EASTER NO ONE WOULD COME GET IT FIX IT I'M IN QUEENS I GOT MONEY TOLLS AND GAS TOOK TO THEIR REPAIR SHOP IN BRONX YESTERDAY AFTER 4 HOURS THEY TOLD ME NOTHING WRONG SENT ME HOME AFTER THEY DID 50 MIN INSPECTION WHICH IT FAILED. THEY HAVE CAUSED ME TONS OF MONEY PARTS JUMPS TRAVEL TIME LOSS OF WORK AND DO NOT CARE OR REIMBURSE ME THE CAR SITS X TIME WON'T START AGAIN WITHOUT JUMP I SENT NUMEROUS EMAILS ASKING MY YEARLY RECEIPT ALL I'VE PAID STILL NOT GIVEN IT TO ME

Mileage: 50,000

ROUGH VIBRATION SLOWLY COMING UP STEERING WHEN BRAKING TO STOP. COULD BE ROTORS OR TIRES. STARTED A FEW MONTHS AGO.

Mileage: 16,000

I WAS TRAVELING ON THE HIGHWAY WITH NO EXISTING PROBLEMS. I DROVE OFF MY INTENDED EXIT WHEN SUDDENLY MY VEHICLE JERKED REALLY HARD, CHECK ENGINE LIGHT STARTED BLINKING AND MY CAR STARTED SLOWING DOWN ALMOST TO A COMPLETE STOP. DIDN'T KNOW WHAT TO DO SO I JUST KEPT DRIVING AS THE CAR KEPT JERKING AND SLOWING DOWN ON ITS OWN! I STOP BY AN AUTO ZONE WHERE THE GUY COMES OUT AND USES HIS DEVICE TO FIND OUT THE POTENTIAL PROBLEM HE SAYS THE PROBLEM SEEMS TO BE THE KNOCK SENSORS.

Mileage: 30,500

DRIVER STATES VEHICLE DECELERATED WHILE DRIVING, PULLED OFF THE INTERSTATE AND OVER TO SIDE OF THE ROAD VEHICLE CAUGHT FIRE IN ENGINE COMPARTMENT.

Mileage: 11,589

I WAS DRIVING ON AN OPEN INTERSTATE USING SMART CRUISE CONTROL WHEN A MESSAGE POPPED UP ON THE DASH SCREEN: SMART CRUISE CONTROL DISABLED. RADAR BLOCKED. WEATHER CONDITIONS WERE DRY AND MY CAR WAS CLEAN. THERE HAD BEEN NO SNOW ACCUMULATION IN MY AREA NOR ANY IN THE AREA IN WHICH I WAS DRIVING. THERE WERE A FEW CARS AROUND. THE CAR THAT WAS IN FRONT OF ME MADE AN EXIT ABOUT A MINUTE AFTER THE MESSAGE AND INDICATOR LIGHTS APPEARED. THE MESSAGE AND INDICATOR LIGHTS RETURNED TO NORMAL AFTER ABOUT 5 MINUTES. AN HOUR AND A HALF LATER, THE SAME MESSAGE AND INDICATOR LIGHTS APPEARED. THE SKY WAS DARKER WITH A FEW FLURRIES IN THE AIR BUT NO ACCUMULATION. I TURNED OFF SMART CRUISE TO FINISH THE TRIP. I DID NOT EXPERIENCE ANY PROBLEMS WITH SMART CRUISE ON THE 5 HOUR RETURN TRIP. WEATHER CONDITIONS THEN WERE GRAY AND RAINING. THE TRIP IS MOSTLY INTERSTATE BUT THE DESTINATION IS MOUNTAINOUS. I MADE THE TRIP SEVERAL TIMES OVER THE LAST 3 YEARS WITH NO PROBLEMS.

Mileage: 26,000

ENTERTAINMENT SCREEN TURNS OFF AFTER A WHILE AND WILL RESET OR I HAVE TO TAP IT AND MAKE SURE IT GOES BACK ON AND DOES THIS OVER AND OVER AT TIMES. SMOKE COMES OUT EXHAUST WHEN PASSING A CAR SOMETIMES

Mileage: 7,600

WE WERE DRIVING THE CAR LAST NIGHT ON CITY STREETS AND THE HIGHWAY, WHEN WE ENCOUNTERED A BAD SMELL COMING INTO OUR VEHICLE. WE FIRST THOUGHT IT SMELLED LIKE NATURAL GAS COMING FROM THE OUTSIDE AREA WE WERE DRIVING, BUT THEN CONCLUDED AFTER ANOTHER 5 MINUTES OF DRIVING THE CAR THAT IT WAS OUR CAR THAT WAS MAKING THE BAD ODOR OR SMELL. I PULLED OFF THE ROAD, AND SHUT THE ENGINE IN THE CAR OFF. I LOOKED UNDER THE HOOD OF THE CAR TO SEE IF ANYTHING WAS BURNING OR IF SOMETHING LOOKED LIKE IT WAS VERY HOT. I DID NOT DETECT ANYTHING WRONG UNDER THE HOOD. THE COOLANT WAS FINE, AND THE MOTOR OIL WAS GOOD. SO THEN WE GOT BACK IN THE CAR, AND THE SMELL WAS STILL THERE. WE NOTICED THE CELL PHONE WAS SITTING ON THE "SELF" CHARGER THAT THIS CAR HAS AS A FEATURE. WE TOOK THE CELL PHONE OFF OF THIS AREA WHERE IT CHARGES, AND NOTICED THE TOP RUBBER AREA WAS VERY VERY WARM OR HOT TO THE TOUCH. SO WE CONCLUDED THIS HAD TO BE THE AREA THAT WAS CAUSING THIS CAUSTIC SMELL THAT WE WERE BREATHING FOR ABOUT 15-20 MINUTES OF DRIVING. THE TOP SURFACE OF THIS RUBBER PAD AREA DID NOT LOOK BURNT OR DESTRUCTED, SO IT MUST BE UNDERNEATH THIS AREA THAT WHATEVER IS RECHARGING THE CELL PHONES, MAYBE A BATTERY OF SOME SORT, IS NO GOOD. WE WERE AFRAID IT WOULD START A FIRE THE SMELL WAS SO STRONG. SO AFTER A FEW MORE MINUTES, WITHOUT THE CELL PHONE RECHARGING ON THIS AREA, THE SMELL STARTED TO GO AWAY. SO THAT IS WHY WE ARE DEDUCTING THIS MUST BE THE PROBLEM AREA. AND IT COULD BE A SERIOUS ONE. I DROVE THE CAR TODAY, AND THE "STRONG" SMELL DID NOT COME BACK. BUT YOU CAN STILL SMELL THE RESIDUE SMELL FROM LAST NIGHT'S PROBLEM THAT OCCURRED.

Mileage: 14,000

TRUNK LATCH BROKE. ITS A KNOWN ISSUE BY HYUNDAI ON 2017 & 2018 MODELS.

Mileage: 30,500

"MULTIPLE WARNING LIGHTS ARE COMING ON THE DASH FOR ABS FAILURE."CAUSE: 5891R00 HYDRAULIC MODULE ASSEMBLY REPLACED. "SCAN TEST CODES C1741, C2402, C1360 DIAG SYSTEM. LINE CASE NUMBER 2019080600434 PERFORM VOLTAGE AND GROUND TEST PER TECH LINE FOUND ABS HYDRAULIC UNIT INTERNAL FAILURE, REPLACED ABS HYDRAULIC UNIT, PERFORM ALL CALIBRATIONS AND VARIANT CODING CLEAR CODES, RESET ADAPTIVES. PROBLEMS OF YELLOW LIGHT COMING ON ON DASH WAS DURING ACCELERATIONS AND TURNING CRUISE CONTROL ON

Mileage: 19,725

WHILE DRIVING CRASH WARNING, ABS, TRACK AND CHECK BRAKES WARNING LIGHTS WOULD COME ON. HYUNDAI DEALER INITIALLY REFLAGGED ECO BUT LIGHTS CAME BACK. DEALER HAD CAR FOR SEVERAL DAYS AND AFTER CHECKING WITH HYUNDAI TECH CENTER AND GOT TEST CODES C2402 C1741 AND C1360 AND SYSTEM FOUND CONNECTION AT ABS MODULE. ALLEGED FIX WAS TO REPAIR ABNORMAL CONNECTION / CONNECTOR AT ABS MODULE. CAR IS HYUNDAI SONATA 2 LITER TURBO WITH 19639 MILES WHEN BROUGHT TO DEALER FOR DIAGNOSTICS AND REPAIR. WE HAVE PICTURES OF ERROR LIGHTS ON OUR CELL PHONE.

Mileage: 19,600

MY DAUGHTER WAS DRIVING ON THE HIGHWAY WHEN THE CAR STARTED TO BUCK AND WOULDN'T ACCELERATE. THE CHECK ENGINE LIGHT CAME ON AND SHE PULLED OFF THE HIGHWAY. SHE CALLED HYUNDAI AND THEY TOLD HER NOT TO DRIVE THE CAR AND TO HAVE IT TOWED TO A DEALERSHIP. WE WERE THEN TOLD BY HYUNDAI THAT THIS IS A KNOWN PROBLEM. THEY INSTALLED A KNOCK SENSOR WIRING HARNESS AND SAID THEY HOPE THAT DOES THE TRICK BUT IT COULD NEED A WHOLE NEW ENGINE. EXPECTED REPAIR TIME IS 6 WEEKS SINCE PARTS ARE ON BACKORDER. WE HAVE SINCE SPOKEN TO SEVERAL DEALERSHIPS AS WELL AS CONSUMERS AND THERE ARE SO MANY COMPLAINTS THAT SOME PEOPLE HAVE BEEN WITHOUT THEIR CARS FOR MONTHS.

Mileage: 9,400

I CAN NOT GET HYUNDAI TO GIVE ME AN ADEQUATE ANSWER

Mileage: 7,000

I WENT INTO PURCHASING DEALER FOR FIRST OIL CHANGE AT 5100 MILES, THEY FLASHED COMPUTER AND LOADED UPDATE HYUNDAI CAMPAIGN 953 PRODUCT IMPROVEMENT. ABOUT 50 MILES AFTER THE RECALL WAS PERFORMED MY CAR WENT INTO LIMP MODE AND IS BARELY DRIVEABLE. CAR WAS ALSO HESITATING, AND BUCKING A BIT. TOOK IT BACK TO DEALER THEY STATED THE CODE DIDN'T APPLY TO MY CAR AND FLASHED IT AGAIN. IT AGAIN WENT INTO LIMP MODE AFTER 50 MILES OR SO. THE RECALL IS SUPPOSED TO PLACE THE VEHICLE IN LIMP MODE DUE TO ROD BEARING WEAR. MY CAR HAS 5,400 MILES ON IT AND IT NOW AT A DIFFERENT DEALER. GOT INFORMATION FROM THAT DEALER REGARDING A TBS #19-01-002 AND LOOKS LIKE ENGINE REPLACEMENT OR WIRING HARNESS.

Mileage: 5,400

THE LANE DEPARTURE WARNING SOUND DOES NOT HAVE ADEQUATE VOLUME AND THERE IS NO OPTION OR SOFTWARE ADJUSTMENT TO INCREASE THIS VOLUME ACCORDING TO HYUNDAI CORPORATE OR MY LOCAL DEALER SERVICE DEPARTMENT. WITH INCREASED AGE OUR HEARING ABILITY MAY BE LESS THAN WHEN WE WERE YOUNGER, MIXED IN WITH FLUCTUATING ROAD NOISE, THIS SAFETY FEATURE MAY NOT INFORM (AUDIBLE SOUND NOTIFICATION TO LOW) A DRIVER OF LANE DEPARTURE AT THE EARLY DESIRED NOTIFICATION TIME. IN MY OPINION, THIS NON ABILITY TO ADJUST THE VOLUME UP OR DOWN ON THE LANE DEPARTURE SAFETY FEATURE IS A GROSS ENGINEERING FAILURE.

Mileage: 1,484

CAR HAS KEYLESS START. WILL NOT START IN TEMPS BELOW 20 DEGREES F. HAS HAPPENED 4X IN 2 WEEKS. CAR IS 8 MOS OLD / LESS THAN 6K MILES. 1ST 3 TIMES EVENTUALLY STARTED BY RUNNING ENGINE. THE WARNING LIGHTS THAT SHOW ARE CHARGING SYSTEM (RAN ITSELF DOWN TO 57% BATTERY THIS TIME); ENGINE OIL PRESSURE AND MIL LIGHT. THE IMMOBILIZED INDICATOR IS ON BUT THEN GOES OFF. THE TANK IS FULL OF GAS. THE BLUE LINK APP CAN'T REMOTELY START THE CAR. IT STATES THAT THE REQUEST WAS NOT PROCESSED.

Mileage: 5,770

I BOUGHT MY 2018 SONATA IN JANUARY 2018. I HAVE NOTICED THAT IT TENDS TO HESITATE WHEN MAKING TURNS ESPECIALLY RIGHT TURNS. THIS PROBLEM OCCURS RANDOMLY WHEN ACCELERATING FROM STOP OR SLOW MOTION. LAST WEEK, I SLOWED DOWN TO TAKE A NEAR 90 DEGREE LEFT TURN. THE SPEED LIMIT IS 25 MPH ON THIS ROAD. THERE WAS A VEHICLE IN FRONT OF ME - SO, I MAINTAINED A SAFE SPEED AND DISTANCE. AFTER TAKING THE TURN, MY CAR SKIDDED VERY SUDDENLY AS I WAS COMING OUT OF THE CURVE, AND IT WAS ALL I COULD DO TO CORRECT IT AND PREVENT IT FROM HITTING A CONCRETE PILLAR OF THE FREEWAY PASSING ABOVE. THE ROAD APPEARED DRY AND THE CAR IN FRONT OF ME DID NOT HAVE ANY PROBLEMS. WHILE I CANNOT RULE OUT THE PRESENCE OF BLACK ICE, I WAS CONCERNED THAT ONE OF THE WHEEL MAY HAVE LOCKED UP EITHER DUE TO HARDWARE OR SOFTWARE PROBLEMS. I TOOK THE CAR TO THE DEALER TODAY. THE SERVICE DEPARTMENT CHECKED OUT CAR AND THEY DID NOT FIND ANY PROBLEMS. I AM REPORTING THIS INCIDENT SINCE I NOTICED THAT SOME OTHER OWNER COMPLAINED OF ENGINE HESITATION WHEN TAKING TURNS. PERHAPS, OTHER OWNERS MAY BE EXPERIENCING SIMILAR ISSUES.

Mileage: 5,500