2017 Hyundai Sonata Hybrid

These are unverified consumer reports filed with NHTSA, shown as submitted.

• 12/22/2022· ENGINE

  The contact owns a 2017 Hyundai Sonata Hybrid. The contact stated that while driving at an unknown speed, the engine seized without warning. The vehicle was towed to the local dealer but was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 90,000.

• 12/21/2024· UNKNOWN OR OTHER,FUEL/PROPULSION SYSTEM

  Literally for years I have been taking my car in to Rick Case Hyundai with the complaint of smelling gas even when the car was parked for long periods. Each time they said they fixed with different items. Gas cap, a part on the catalytic converter, etc. The problem never resolved but I noticed it only happened when the tank was more than half full. I got a video of gas dripping out underneath and took the car to Rick Case and gave them the video. My car has been there ten days because they first tried to say it was a seal on the fuel pump. This time I said that seems unlikely cause that only happens when tank is full and persists even after car is parked many hours. Now they report they found a pinhole leak in the gas tank. I will upload the video if this form allows. This does not appear to be a pinhole leak to me. I first noticed this around 2019. Unfortunately the video is MP4 and I cannot upload it.

• 12/12/2022· ENGINE AND ENGINE COOLING,ELECTRICAL SYSTEM

  The contact owns a 2017 Hyundai Sonata Hybrid. The contact stated that while driving approximately 60 - 65 MPH, the red engine warning light illuminated. The vehicle was towed to the local dealer who informed her the vehicle was working as designed. While driving on another occasion, the check engine warning light and the Hybrid System Shutdown and Turn Off Engine message was displayed. The vehicle was towed to the same local dealer where it was diagnosed and determined that the computer chip was faulty. The vehicle was repaired. The contact stated that on another occasion the check engine warning light illuminated again. The vehicle was towed to the local dealer but was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 80,000.

• 12/06/2023· ENGINE

  The contact owns a 2017 Hyundai Sonata Hybrid. The contact stated that after his daughter started the vehicle, the vehicle began to knock and shake violently, and his daughter smelled a burning odor within the interior of the vehicle. No warning lights were illuminated. The vehicle was towed to the dealer, who determined that the connecting rod bearings inside the engine had worn prematurely, requiring the replacement of the engine. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 21V727000 (Engine), but the VIN was not included. The manufacturer was not notified of the failure. The failure mileage was unknown.

• 12/05/2019· VEHICLE SPEED CONTROL,SERVICE BRAKES,FUEL/PROPULSION SYSTEM

  WHILE DRIVING ON THE HIGHWAY, A NOTICE WAS SHOWN ON THE DASHBOARD THAT THE HYBRID SYSTEM AND CRUISE CONTROL SYSTEM WERE NO LONGER FUNCTIONAL. THE VEHICLE THEN STARTED TO ACCELERATE, UPHILL, WITHOUT THE GAS PEDAL BEING ENGAGED. THE VEHICLE WAS TAKEN OFF THE HIGHWAY AND WHEN COMING TO A NEAR COMPLETE STOP THE VEHICLE STOPPED WORKING COMPLETELY. AFTER RESTARTING THE VEHICLE AND DRIVING IT TO A SAFE PLACE TO PARK A NOTICE INDICATED THE BREAKS WERE NO LONGER FUNCTIONAL. THE CAR WAS SUBSEQUENTLY TOWED. THE VEHICLE HAS HAD NUMEROUS REPAIRS SINCE AND IS STILL EXPERIENCING THE SAME ISSUE(S) AS OF 12/05/2019.

• 11/29/2025· STEERING,ELECTRICAL SYSTEM,SERVICE BRAKES

  While traveling 40 mph, car flashes a warning, "Check Hybrid System", and then the car shuts off. No power steering and brakes are difficult. The warning is only 3-5 seconds before everything shuts down. This is definitely a hazard to myself and others. If in traffic at higher speeds, there would certainly be an accident with devastating results.

• 11/29/2021· ELECTRICAL SYSTEM,EXTERIOR LIGHTING

  The contact owns a 2017 Hyundai Sonata Hybrid. The contact received a recall notification for NHTSA Campaign Number: 21V749000 (Exterior Lighting, Electrical System) however, the dealer informed the contact that they would be able to perform the recall repair in approximately five months. The manufacturer was notified of the issue and advised the contact that they could assist with scheduling an earlier appointment with another dealer who was 40 miles away from the contact's residence. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact had not experienced a failure. Parts distribution disconnect.

• 11/27/2023· ELECTRICAL SYSTEM,UNKNOWN OR OTHER,FUEL/PROPULSION SYSTEM

  In May, the engine completely failed as I was driving on the freeway, without cause. It had to be towed to the dealership where luckily the engine was replaced under warranty. Less than 6 months later, the HEV and CEL warning lights came on as I was commuting to work via highway. The car was very low powered, hard to accelerate, and immediately decelerated whenever I started to let off the gas pedal. It struggled to go at or above 60-65 mph. The freeway speed was 70 mph and it was a safety risk for the car to power down. Dublin Hyundai could not replicate the problem, simply recharged the battery and said I was good to go. Less than 1 week later, the exact same thing happened as I started on a road trip. I had to return the car home and get it towed to Stockton Hyundai for diagnosis. This is car is only 6 years old, has been routinely maintained, and just hit 100k miles, for which Hyundai is denying any repair assistance even though there is a lifetime hybrid battery warranty.

• 11/18/2022· SERVICE BRAKES, HYDRAULIC

  The contact owns a 2017 Hyundai Sonata Hybrid. The contact stated that the vehicle was taken to a Kia dealer for oil change and brake fluid flush; however, upon test driving the vehicle after the service, the brake pedal was depressed but went to the floorboard, and the vehicle responded with a significant delay. The Kia dealer was notified of the failure, but the vehicle was not repaired. The contact stated that the failure persisted while driving. There was no warning light illuminated. Additionally, the contact stated that the Kia dealer had diagnosed that the parking brake was inoperable. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 52,000.

• 11/18/2018· SERVICE BRAKES

  I HAVE A HYUNDAI SONATA HYBRID 2017. THE BRAKING SYSTEM CREATES A HOWLING SOUND WHEN THE BRAKE IS APPLIED. IT HAPPENED INTERMITTENTLY. I SENT MY CAR TO THE HYUNDAI DEALER NEAR ME THREE TIMES. THE PROBLEM WAS NOT RESOLVED. ACCORDING TO THE DEALER TECHNICIANS, THEY WERE INFORMED BY HYUNDAI, THE MANUFACTURER THAT THE SOUND WAS NORMAL. I AM CONCERNED ABOUT THE SAFETY OF DRIVING THE CAR. I HOPE NHTSA CAN HELP ME TO RESOLVE THIS ISSUE. THANK YOU.

• 11/16/2023· ENGINE

  The contact owns a 2017 Hyundai Sonata Hybrid. The contact stated while driving 55 MPH, the vehicle became inoperable and made an abnormal sound. The contact parked the vehicle and then had the vehicle towed to a dealer after the vehicle failed to restart. Several warning lights were illuminated. The vehicle was diagnosed. The contact was informed that the engine needed to be repaired or replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 125,000.

• 11/11/2024· UNKNOWN OR OTHER

  My 2017 Hyundai Santa hybrid limited it all started with 11 icons appeared on the dash took it to Hyundai dealership Gainesville to be fixed in July of 2024 dropped it off Wednesday they emailed me with a price of 1563.70 I okay it to be fixed. I picked it up that following Saturday no sooner after leaving halfway home the check engine light came on took it back the following Monday they pulled it in the shop no more than 15 minutes later they pulled it out said they fixed it said if it should happen again to bring it back shortly after leaving check engine light came on again took it back to them and fixed it left check engine light came on again so I took it to Tallahassee Hyundai dealership they changed cabin air filter and engine filter we left the check engine light came on again so we took it back to them again and they found nothing . Then the check engine light was still on then the car wouldn't start so I had to pay to have it towed to Hyundai dealership of Gainesville again told them now the car won't start and it's been there since October 20 2024 spoke to them many times I still haven't gotten any one that can seem to fix my car they don't return phone calls just give me the run around it's my only car I have never heard of a dealership that can't fix there own car they sell . I'm getting nobody that is willing to help me and the car is not paid for im so upset is this the kind of business you provide to your customer's.

• 11/07/2022· STEERING,ENGINE

  The contact owns a 2017 Hyundai Sonata Hybrid. The contact stated that after the vehicle was taken to a local dealer for an unknown recall repair, there were abnormal knocking, clicking, and flapping noises heard intermittently coming from the engine compartment. The contact also stated that the vehicle had reduced power steering assist and was stalling while driving uphill. The check engine warning light and other unknown warning lights were illuminated. The vehicle was taken to a local dealer on three different occasions; however, the mechanics were unable to duplicate the failure. The contact stated that the wiper blades and key fob were replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and a case was opened. The approximate failure mileage was 15,000.

• 11/04/2023· POWER TRAIN,ELECTRICAL SYSTEM,ENGINE

  Engine Shut Off Without Warning problem of the 2017 Hyundai Sonata Hybrid While driving the car on the freeway, it will jerk forward and then shortly after lose power. I pull over (luckily haven't been killed yet) on the side of the freeway. I've taken my car to a Hyundai dealership third times. All Three time I was stranded on a busy california highway. I have looked into this warning over a year and no one seems to know the problem. This should be a recall and all Hyundai dealers should be made aware of what this warning is. We as Hyundai owners need answers and help.

• 10/27/2018· ENGINE

  HEV WARNING LIGHT CAME ON WHEN I STARTED MY CAR. I HEARD A SUCKING AIR SOUND AT WHICH TIME I TURNED OFF THE CAR. I THEN RESTARTED AND NO WARNING LIGHTS WERE ON. LATER THAT DAY WHILE DRIVING HOME THE WARNING LIGHT CAME BACK ON. I PULLED THE CODES AND IT SHOWED P0105 AND P0107. DEALER INSPECTED AND FOUND THE EGR PIPE(C) SEPARATED FROM FLANGE CAUSING UNMETERED AIR LEAK. REPAIRS TOOK FROM 09/26/18-10/02/18

• 10/27/2018· ELECTRICAL SYSTEM

  HEV WARNING LIGHT CAME ON WHEN I STARTED THE CAR IN THE MORNING. I HEARD SOME GRINDING AND A BELT SLIPPING. DIAGNOSED AS GENERATOR PULLEY GRINDING, ALIGNMENT MARKS NOT ALIGNED. IT TOOK FROM 08/31/18 TILL 09/07/18 FOR THE REPAIR TO BE COMPLETED.

• 10/25/2017· ENGINE

  WHILE DRIVING ON A 4 LANE STREET THE CAR SUDDENLY GAVE A MESSAGE 'CHECK HYBRID SYSTEM SHUT OFF ENGINE'. I WAS STOPPED AT A RED LIGHT SO I TURNED OFF THE ENGINE. WHEN I TRIED TO RESTART THE CAR IT WOULD NOT START. IT TOOK 4 TRIED TO GET THE CAR RESTARTED. LATER THAT NIGHT THE CAR WOULD NOT START AT ALL AND I HAD TO HAVE IT TOWED TO THE DEALERSHIP THE NEXT DAY. THE DEALERSHIP COULD NOT FIND A PROBLEM AND I RETURNED TO GET THE CAR. ON THE WAY HOME FROM THE DEALERSHIP I HAD SHUT OFF THE CAR TO RETRIEVE SOME ITEMS AND UPON RETURNING TO THE CAR AGAIN IT WOULD NOT START. ALL OF THE INDICATOR LIGHTS ON THE DISPLAY PANEL WERE LIT BUT THE CAR WOULD NOT DRIVE AND THE SHIFT LEVER WAS LOCKED. RETURNED THE CAR TO THE DEALERSHIP AND THEY REPLACED THE HPCU MODULE. I GOT THE CAR BACK AT THE BEGINNING OF SEPTEMBER AND TWICE IT HAS FAILED TO START. EACH TIME THE DASHBOARD INDICATOR LIGHTS WILL LIGHT UP BUT THE ENGINE WILL NOT START.

• 10/23/2024· VISIBILITY/WIPER

  Windshield wiper motor started to operate slowly and at times stops with wiper blades in middle of windshield.

• 10/18/2021· STEERING

  I lost the ability to steer my car any more than 15 to 20 degrees in any direction while traveling at a maximum speed of 25 mph and within approximately 300 yards of driving. Once steering control became limited a warning was displayed on my dash very briefly saying my high beams were not functioning properly. Then my dash showed 7 different warning icons. My safety and that of others was most definitely put at risk. The dealer told me they had to replace the steering column. He also told me that this type of malfunction only occurs on the Hybrid models of the Sonata.

• 10/11/2023· ELECTRICAL SYSTEM,AIR BAGS

  1) I purchased 2017 Hyundai Sonata Hybrid new. Now for 2nd time, trunk latch won't open trunk. 1st time i paid for a new park on the trunk. Now again, trunk won't open. Dealer states they have to replace rear bumper antenna. 2) Airbag light came on on the dash, and remains on when I start car. Dealer stated it is the driver seatbelt light. I Never had an accident with this vehicle and air bag(s) have never inflated. Dealer stated they will have to replace driver airbag which will cost me $1,436.35. I don't know why I have to pay for a new driver airbag when I bought the car new and never had an accident with the car.

• 09/28/2023· ELECTRICAL SYSTEM,ENGINE

  The contact owns a 2017 Hyundai Sonata Hybrid. The contact stated while driving 60 MPH and taking an exit, the vehicle stalled. There were no warning lights illuminated. The vehicle was towed to the local dealer, where it was diagnosed that the power relay assembly and battery needed to be replaced. The vehicle was repaired, but the failure recurred. The contact stated that the vehicle started but failed to move. The contact stated that the failure was related to TSB Number: 20-01-003H. The manufacturer was contacted, but no assistance was provided. The failure mileage was approximately 142,000.

• 09/27/2023· ELECTRICAL SYSTEM,UNKNOWN OR OTHER

  I first experienced HEV hybrid system issue back in 2022. I took my sonata to the dealership which they had over a month to try to fix the problem which they did for the time. Now a year later I’m back with the same issues and the dealer basically saying they can’t see my car for a month then don’t know how long it’s going to take to fix the issues if the even. Nobody can really tell me what’s wrong with my car. This the second time it’s been a safety hazard while driving on the interstate and the system malfunctions causing a hazard to me and drivers around me because the vehicle has basically cuts off rapidly slowing the vehicle down

• 09/25/2024· ENGINE

  ENGINE OIL MISFIRE ALSO NOTED AS A RECALL ON THE 2016 MODEL AND REPEATEDLY MENTIONED ON LINE AS AN ERROR IN THE 2017 MODEL NOW REACHING SIMLAR MILEAGES. DEALER IS REFUSING TO ACKNOWLEDGE IT AS A PROBLEM AND SAYS THE ENGINE LIGHT SI NOT RECORDING THE ERROR AND YET AN OUTSIDE ANALYSIS SAYS ITS ERROR 0302!! THE SAME AS THE 2016 RECALL NOTICE. THE 2017'S SHOULD BE RECALLED FOR THE SAME FIX

• 09/21/2025· ENGINE

  The engine shut off on the highway on two different days. Vehicle was going between 65 and 70 mph. The vehicle engine shut down and all the warning lights came on. Every one. The vehicle still moved but nothing inside worked, it ran on battery mode for the 17 miles to the dealership with a maximum speed of 60 mph. The risk was the immediate unresponsiveness of the vehicle and the sudden and immediate reduction in speed and power. It presented itself twice in about 2,000 miles. The dealership charged a 491$ diagnostic and found all the warnings and reset it, not reason for it happening and sent me on my way. Then it happened again. Brought back to the dealership and they tried to say they did another diagnostic and called the tech helpline. It took hours and they still don’t have a definitive answer, wanted to try almost 2k in repairs to see if it would fix the issue without any guarantees it would. Warning lights, all of them came on, cruise control, abs, engine light blinking, steering, literally everything and messages started running through the information center.

• 09/18/2020· ENGINE

  WHILE ACCELERATING, ESPECIALLY UP INCLINES, I WOULD HEAR A KNOCKING SOUND, FEEL VIBRATIONS, THE CHECK ENGINE LIGHT WOULD COME ON AND THE ACCELERATION WOULD NOT WORK. I WOULD COAST FOR A LITTLE BIT (UP TO ABOUT A MINUTE) BEFORE THE ACCELERATION WOULD WORK AGAIN PROPERLY. THIS CAUSES A VERY HAZARDOUS SITUATION AS OTHER VEHICLE BEHIND ARE STILL ATTEMPTING TO ACCELERATE WHILE I CAN NOT. THIS HAS HAPPENED TO ME AT LEAST 5 TIMES IN THE LAST MONTH AND A HALF. THE MANUFACTURERS SERVICE CENTER THAT I TOOK THE VEHICLE TO SAID THAT THEY COULDN'T REPRODUCE THE ISSUE SO THERE IS "NOTHING WRONG" WITH THE VEHICLE.

• 09/17/2022· STEERING,UNKNOWN OR OTHER,ENGINE

  My wife and I have been having an intermittent but constant problem with our steering mechanism which our dealer says they cannot replicate and therefore cannot resolve. This constant problem is one that MANY Sonata Hybrid owners have reported online. Our experience is having the steering wheel seize, flashing lights during which the red steering wheel icon with an exclamation point remains on. Our experiences have been in our mobile home park when we are turning left. The last two incidents were when we were blocking our street and vehicles could not pass. A prominent feel in the steering wheel of clicking, clunking, and play in the wheel accompanies these incidents. I had to, as others, to turn the car off and restart to carefully, amidst clicking and clunking, to return the car to our driveway where it will sit until we take frontage roads to our dealer. We recently received a notice from Hyundai that the steering wheel mechanisms' warranty has been extended 15 years from the ending date of the original warranty. The notice indicated that our Sonata Hybrid "may exhibit reduced power steering assist and/or motor driven power driven steering (MOPS)." We believe this is suggesting that MANY complaints have been sent to various authorities regarding this same issue. We now have a much delayed (due to our dealership's backed up service appointments) appointment to again address this problem which they say is not happening because they cannot replicate it. Many online comments indicate that people are scared that themselves, loved ones or others will be involved in a fatality due to this "intermittent" problem. We could not find a Hyundai Regional Manager with whom to correspond. We feel abandoned by Hyundai but hopefully not by the NHTSA.GOV. We are scared and disappointed. Is Hyundai really "committed to providing vehicles of outstanding quality and value" as its August, 2022, EXTENDED WARRANTY NOTIFICATION said. Please help. Hyundai dealers won't.

• 09/12/2025· SERVICE BRAKES

  Vehicle: 2017 Hyundai Sonata Hybrid – 131,700 miles – Maryland registered While driving, my vehicle displayed the warning “Check Hybrid System. Turn off engine.” The dealer diagnosed a failure of the Hydraulic Control Assembly (ABS/Brake Control Unit). This is a safety-critical braking system. The vehicle is unsafe to drive until repaired. Hyundai previously issued recalls for this same component on earlier Sonata Hybrid models (2011–2015), due to risk of brake failure and fire. My 2017 vehicle is experiencing the exact same failure, yet is not currently included in the recall. This defect should be investigated as it compromises safe braking performance and puts drivers and passengers at risk. I am requesting that NHTSA review this issue and consider expanding Hyundai’s recall coverage to include later model years like mine.

• 09/12/2022· ENGINE

  Motor issue. Took vehicle in for routine service. Hyundai Sonata Limited Hybrid year 2017. Purchased and took possession of vehicle in May 2018. Purchase New. Current miles 41,000. When doing routine service, tech discovered that head gaskets were now damp and indicating coolant fluid leak. 1) Failed component - head gaskets. 2) Safety risk - none at this time. Car is functional and operating normally at this time. 3) Dealer discovered issue. 4) Vehicle has not been inspected by someone other than dealer. Exclusive dealer service since purchased. 5) No warning lights or any other such indication of failure. No leaking or wet spots under vehicle when parked. Dealer at this time ordering parts and to schedule service repair. Have called Hyundai and filed a claim on this matter. Concern is that there is a prior recall for the motor regarding internal bearing failure. At that time, vehicle was inspected for this recall and was determined that there is no defect/problem existing or in progress. I am desiring that Hyundai replace the entire motor and not just repair due to the known other mechanical recall. As of this time, there is no determination made on my request.

• 09/11/2023· ELECTRICAL SYSTEM,UNKNOWN OR OTHER,ENGINE

  This issue has happened twice in one month on my Hyundai sonata hybrid that I’ve had for less than 3 years. It is a 2017 model. While driving on the interstate, the car will stop accelerating and all warning lights will come on along with “Check hybrid engine. Turn off engine”. The dealership has yet to find out the problem and cannot tell me what the issue is both times I’ve brought it in (it’s had ti be towed both times). I cannot afford to keep paying for repairs on an almost new car along with the safety concerns of driving it. I am attaching pictures of both times it happened- noting that it is the same warning each time. It looks like multiple owners are having this issue and none has yet to be resolved.

• 09/05/2024· POWER TRAIN

  What component or system failed or malfunctioned, and is it available for inspection upon request? Vehicle stopped accelerating and flashing check engine light went on. Vehicle reported "Check Hybrid System." Dealer believes it was loose pins in a HCULDC connector that may have caused loss of communication. How was your safety or the safety of others put at risk? Lost acceleration on a highway and was nearly hit trying to get off of the road. Has the problem been reproduced or confirmed by a dealer or independent service center? Piazza Hyundai of Pottstown, PA reproduced the issue. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? Dealer secured loose pins. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? No.

• 09/05/2018· ELECTRICAL SYSTEM,ENGINE,FUEL/PROPULSION SYSTEM

  ON THIS PAST LABOR DAY, WHICH WAS 9/3/2018, I PULLED INTO A GAS STATION TO REFUEL MY CAR. SHUT OFF CAR AND HAD KEY FOB WITH ME. PUMPED THE FUEL AND GOT BACK IN THE CAR. NOTHING. CAR WAS INOPERABLE. PRESSED THE START BUTTON, PRESSED THE BRAKES, SHIFTED FROM DRIVE TO NEUTRAL AND BACK, PRESSED THE BRAKE AND THE START BUTTON AGAIN AND NOTHING. DASHBOARD LIT UP LIKE A CHRISTMAS TREE WITH THE KEY FOB LIGHT ON, THE CHECK ENGINE LIGHT ON, ETC. CALLED BLUELINK. THEY TRANSFERRED ME TO A "PHONE PROMPT" SWITCHBOARD. PROBLEM IS THE PHONE SCREEN WOULD NOT OPERATE AS IT WAS FROZEN AS WELL. CALLED AGAIN, LADY STAYED ON THE PHONE WITH ME AND TRANSFERRED ME. THEN WHEN TRANSFERRED SHE WAS ABOUT TO HANG UP WITH THE MESSAGE READ THEY WERE CLOSED. WTF? I AM SUPPOSED TO HAVE ROADSIDE ASSISTANCE. REP FROM BLUELINK TOLD ME TO TOW THE CAR. THERE WAS NOTHING SHE COULD DO AS IT WAS A HOLIDAY. HONESTLY, I WAS FURIOUS. I EXITED THE CAR AGAIN AND SHUT THE DOOR. HAD THE FOB WITH ME. GOT BACK IN AND AGAIN, NOTHING. COULD NOT EVEN TURN THE STEERING WHEEL. GOT OUT AGAIN AND THIS TIME CHECKED FUSES, AND TURNED SWITCH OFF THEN ON FOR ALL FUSES. NOTHING AGAIN. REPEATED THE STEPS AS TYPED EARLIER, AND NOTHING. ABOUT 20 MINUTES LATER I TRIED IT AGAIN AND IT STARTED. I HAVE HAD MY COMMUNICATIONS CENTER REPLACED ONCE ALREADY. ANDROID AUTO WORKED WHEN IT FELT LIKE IT. MY SENSORS FOR BLIND SPOTS TURN OFF AT WILL. MY REAR VIEW CAMERA WORKS BUT THE SENSORS DON'T ALWAYS PICK UP ONCOMING CARS OR PEDESTRIANS. THE CAR IS GOING BACK TOMORROW YET AGAIN. THIS TIME I AM PUSHING FOR LEMON LAW. THE ELECTRICAL SYSTEM IS CRITICAL TO THE FUNCTIONALITY OF THE CAR. I LOVE THE MILEAGE I GET FROM THIS CAR AND EVERYTHING ELSE IS GREAT, BUT I AM NOT RUNNING THE RISK OF DRIVING ON THE INTERSTATE AND THE ELECTRONIC SYSTEM JUST DECIDES TO GO ON A VACATION!

• 09/02/2024· POWER TRAIN,ELECTRICAL SYSTEM,ENGINE

  While driving, car started to lose power. Warning lights started flashing to turn off vehicle to recharge battery. Car lost all power. Car was towed to dealership. Dealer started diagnostic testing, and first thing that was noted is that all oil had drained from car and that crank shaft may now be damaged. Prior to incident, no warning lights came on for service, engine or oil lamp. Dealer and internet searched confirm this has been happening to this model recently.

• 09/01/2026· ENGINE AND ENGINE COOLING

  The contact owns a 2017 Hyundai Sonata. The contact stated that the vehicle experienced excessive oil consumption with an abnormal burning odor. The vehicle was taken to a dealer, and an oil consumption test was performed. The contact was informed that the vehicle passed the inspection. While driving later, the vehicle stalled and was taken back to the dealer, where it was determined that the vehicle was consuming an excessive amount of engine oil, and several DTC including the Knock Sensor Detection System (KSDS) were found. The contact stated that while driving or reversing at various speeds, the vehicle shuddered, made abnormal rattling sounds, entered HEV Lock Mode, and the vehicle stalled. The vehicle occasionally came to a complete stop in the middle of the road and had to be pushed out of the roadway. On other occasions, the driver was able to pull over to the side of the road. The vehicle failed to restart and was towed after stalling. The contact stated that the check engine warning light was illuminated before the vehicle entered HEV Lock Mode, with several unknown warning lights illuminated. The vehicle was towed to the dealer, where several tests, including bearing clearance tests and unknown repairs, were performed; however, the failure persisted. During the final service visit, the dealer diagnosed the vehicle with engine wear and tear and fractured pistons. The dealer determined that the engine needed to be replaced; however, the service manager informed the contact that there was no guarantee that replacing the engine or catalytic converter would resolve the failure due to severe engine damage. The vehicle was not repaired. The manufacturer was notified of the failure and offered loaner vehicle assistance on several occasions; however, coverage for the engine replacement was denied. The failure mileage was approximately 110,000.

• 08/31/2024· UNKNOWN OR OTHER,ENGINE

  This is the seventh occurrence of complete loss of power while driving on the interstate. The hybrid system warning activated, followed by the engine shutting down, and all dashboard lights illuminated with alerts indicating "Shut Off Engine/HEV." An 18 wheeler was pulling out from the shoulder as I was losing power and barely missed getting crushed. The former problems have all been at interstate speeds with similar accident avoided. The service history clearly demonstrates that Hyundai has repeatedly attempted to address this issue by replacing numerous critical components, including the engine, transmission, knock sensor, battery (three times), integrated brake actuation system, and smart cruise control, among others. Despite these extensive repairs, the problem persists. On this latest occasion, less than 4,000 miles and four months since the last major incident, the dealership has proposed replacing the intake manifold, EGR valve, HSG belt, and spark plugs. The belt was changed less than 20K miles ago. and I believe the spark plugs were as well. Each time my vehicle experiences this issue, it is out of commission for weeks or even months at a time, causing significant inconvenience and raising serious safety concerns. I no longer trust this vehicle and I don't believe the many recalls have successfully addressed the root cause of issues with the 2017 Hybrids.

• 08/30/2022· ELECTRICAL SYSTEM,EXTERIOR LIGHTING,ELECTRONIC STABILITY CONTROL (ESC)

  The contact owns a 2017 Hyundai Sonata Hybrid. The contact stated that while his daughter was driving approximately 65 MPH, the vehicle shifted into Limp Mode with several unknown warning lights illuminated. The vehicle was towed to the dealer and several DTC codes were cleared and the accelerator pedal assembly was replaced. Shortly after receiving the repair, the failure reoccurred and the vehicle was towed to the dealer another time. The dealer diagnosed the vehicle and determined that max cylinder #7 had failed to cause a knocking in the engine. The vehicle had not been repaired. The dealer attempted to repair the vehicle under NHTSA Campaign Number: 14V252000 (Electrical System, Exterior Lighting, Vehicle Speed Control, Electronic Stability Control) however, the VIN was not included and the repair was denied. The manufacturer was informed of the failure and confirmed that the VIN was not included. The approximate failure mileage was 91,679.

• 08/25/2025· STRUCTURE

  I was drying my car after washing it(I only use products approved for washing and drying vehicles) when a piece of paint on the hood just peeled off. It has not been wrecked or damaged in any way on the hood so I feel it must be a defective paint job from the factory.

• 08/18/2019· UNKNOWN OR OTHERFire

  DRIVING TO WORK WHEN I HEARD A RATTLING NOISE AND ENGINE LIGHT CAME ON & OFF, THEN I SMELLED AND SAW SMOKE, SO IMMEDIATELY PULLED OUT OF THE FREEWAY TO THE NEAREST EXIT LUCKILY A PARKING LOT BEFORE THE CAR BURST INTO FLAMES.

• 08/10/2024· ELECTRICAL SYSTEM,ENGINE,LANE DEPARTURE

  While driving on the highway, the car loss. The dashboard noted the Blindspot Detention System failed and the dash noted "Hybrid System Warning. Turn off Engine." The vehicle was towed to the dealership. They confirmed a Knock System Sensor had to be replaced. Less than a month after the repair, the same issue occurred on the highway again and the vehicle was towed to the dealership. Vehicle has been at the dealership for over 2 weeks and dealership has confirmed they haven't been able to accurately diagnosis the problem yet. Both incidents have occurred after the dealership addressed the recall campaign related to the engine.

• 08/09/2024· ENGINE

  EGR cooler leaks and slowly burns off engine coolant resulting in the car overheating while driving, forcing a quick exit from the road, or stopping in traffic not to damage the engine. Google search shows this is a very common issue with these hybrids.

• 07/24/2023· ENGINE

  The car started shaking or not running smoothly back in May and then the check engine light came on. I immediately pulled over and inspected under the hood. I saw nothing wrong and the car started fine and check engine light went away. I drove a few more days without any problems but then the same thing happened again. The next day I called the dealership (Bob King Hyundai in Winston-Salem, NC) the earliest appointment was 26 days away. I had no choice but to keep driving it even thought I was terrified every time. It happened a few more times and I took it by Auto Zone and they gave me a DTCs Secondary code of P0303 Cylinder 3 misfire detected No Code(The gentleman informed me that to get a code the light would need to stay on. I told this to the dealership when I took it in for service and diagnosis on 5/30/2023 They called me on 6/1/2023 and told me the mechanic could not find anything and that it could be a vaccum leak and they can clear themselves. About 2 days latter it happened again. I called the dealership back and ask that the Service Manager call me and He still has not called me. I also reported this to corporate Hyundai and that Gentleman stated He could not get in touch with anyone about the issue either. I went ahead and made another appointment which is now scheduled for 8/10/2023. I took it to O'Rielys and they told me the same thing that Auto Zone did Cylinder 3 misfire. I have replaced the gas cap with Hyundai but that didn't help.

• 07/22/2019· STEERING

  MY VEHICLE HAS 65000 MILES AND THE STEERING WOULD FREEZE UP WHILE DRIVING ON A LOCAL STREET AND ALMOST HAD A COLLISSION. FIRST TIME I NOTICED THE PROBLEM WAS WHEN MY VEHICLE HAD 55000 MILEA AND IT WAS UNDER WARRANTY. THEY REPLACED A PART AT THAT TIME AND NOW JUST 2 MONTHS LATER I HAVE THE SAME PROBLEM BUT THE DEALERSHIP REFUSE TO FIX THE PROBLEM. IT IS A SAFETY ISSUE AND IT STARTED WHILE UNDER WARRANTY. CAN YOU PLEASE HELP ME WITH THIS MATTER.

• 07/17/2018· UNKNOWN OR OTHER

  I WAS INFORMED BY AN AUTO MECHANIC THAT HYBRID VEHICLES INVOLVED IN A COLLISION COULD EXPLODE WHEN THE CAR DOOR IS OPENED. HAVE YOU HEARD ANYTHING ABOUT THIS? COULD IT BE TRUE? [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).' *PM

• 07/13/2023· ENGINE

  The contact owns a 2017 Hyundai Sonata Hybrid. The contact stated that while driving approximately 70 MPH with the accelerator pedal depressed, the vehicle started to lose power with the Hybrid and check engine warning lights illuminated. The contact veered to the side of the roadway. The contact shut off and restarted the vehicle however, the vehicle stalled and was not able to be restarted. The vehicle was towed to a dealer where it was diagnosed that the engine needed to be replaced under TSB: 209. The vehicle was repaired, but the failure recurred. The manufacturer was notified of the failure. The failure mileage was approximately 80,000.

• 07/09/2023· ELECTRICAL SYSTEM,ENGINE,FUEL/PROPULSION SYSTEM

  Multiple Error codes popped up on Multiple occasions. Lost power and last code was "Check Hybrid System Shut off Engine" HEV System Error. Battery, Engine, Collison, and Maintenance Error Lights showing on Dashboard. 06/ 22 - Dealership inspected and worked on Safety Recalls only. Nothing else was found. 10/22 - Fix Finder report showed Error code P0455. Vehicles reset itself somehow over the weekend. No issues on Monday morning. 11/22 - Lost all power. Towed to Dealership. They reset codes P0455 and P0456. Test passed w/ no further issues. 07/09/2023 - Driving 65mph and loss power. Multiple Error codes. Slowed to 20mph and made into driveway. HEV Shut off Engine came on as I stopped.

• 06/29/2022· ELECTRICAL SYSTEM,ENGINE

  After travelling on the highway for approximately 1 hour the HEV light along with several other lights came on and the engine powered down. The instructions were to turn off the engine immediately . Luckily I was in the right lane and was able to get to the shoulder of the highway and turn off the engine. Tried several times to restart, but same message came up to turn off engine. Had it towed to closest Hyundai dealer for service. They couldn't look at it immediately, but according to them it started the next day and they drove it around (local driving) for 10 miles with no issues. I took the car back and after driving it again on the highway for 1 hour the same problem occurred and I had to have towed to my local Hyundai dealer. It has been in their shop for over 3 weeks and I still have no answers as to what may have caused the problem.

• 06/22/2022· ENGINE

  The contact owns a 2017 Hyundai Sonata Hybrid. The contact stated that while driving at an undisclosed speed, the vehicle was shaking and hesitated during acceleration with the check engine warning light illuminated. The vehicle was taken to the dealer; however, the dealer was unable to duplicate the failure. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 40,800.

• 06/16/2025· ELECTRICAL SYSTEM

  Odometer Fraud. The contact stated that while attempting to purchase a 2017 Hyundai Sonata Hybrid, it was later discovered that there was a mileage discrepancy. The vehicle was not yet purchased. The vehicle mileage was 87,000, but the contact later discovered that the mileage was 105,000.

• 06/11/2021· LATCHES/LOCKS/LINKAGES

  The trunk will not open by any means, the button inside, the key fob, the mechanical key, the smart trunk open feature. Mine is the Hybrid and does not have fold down back seats. So there is no way to open it from inside or outside only via the inside of the trunk. It just has 28,045 miles. I called the dealer Bob King Hyundai and they did not know if it is under warranty and it will cost $130 just to look at it?

• 06/10/2026· ENGINE

  The Hybrid Electric Vehicle (HEV) system in my 2017 Hyundai Sonata Hybrid Limited malfunctioned. On three separate occasions, the HEV warning light illuminated while I was driving on the highway, followed by a sudden loss of power. The vehicle stalled and stopped running, leaving it inoperable. The incidents occurred in approximately August 2022, November 2023, and February 2026. The vehicle is available for inspection upon request. Each incident occurred while driving on a highway. The vehicle suddenly lost power and stalled in moving traffic, creating a significant safety hazard. I was forced to attempt to move the vehicle out of active traffic lanes while other vehicles were traveling at highway speeds. The unexpected loss of propulsion increased the risk of a crash, serious injury, or death to myself, my passengers, and other motorists. The vehicle was taken to a Hyundai dealership after each incident. However, the dealership did not provide an explanation for the HEV warning light, loss of power, or stalling condition. To my knowledge, no permanent repair was identified, and the problem recurred on multiple occasions. The vehicle was inspected by a Hyundai dealership following each towing event. The vehicle was towed after each incident because it was not safe to drive. To my knowledge, Hyundai did not provide a definitive cause for the failures. The vehicle has not been inspected by police or insurance representatives in connection with

• 06/10/2025· ENGINE AND ENGINE COOLING

  The contact owns a 2017 Hyundai Sonata Hybrid. The contact stated while driving at various speeds, the contact noticed an abnormal ticking sound coming from the engine. There was no warning light illuminated. The vehicle was taken to the dealer, where it was diagnosed with engine failure due to the rod bearings failure. The dealer determined that the engine needed to be replaced and informed the contact that the repair was not covered under an unknown recall due to the mileage. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 183,000.