Owners have filed 1,080 complaints
about the 2014 Hyundai Sonata with NHTSA between 2014 and 2026.
The largest single group is the engine & cooling.
Across this model's run it ranks 6 of 32 worst.
The letter says how bad. This says what kind — whether this year drew
an unusual number of complaints, unusually dangerous
ones, or failures that arrived unusually early.
The dashed ring is 50 — the national norm. Further out is worse.
Complaint volume — 78
Against the median year of the Hyundai Sonata. 50 means typical for this
model; 100 means roughly double.
Severity — 67
13.1% of these complaints
involved a crash, fire, injury or death, against a national rate of
9.7%.
Early failure — 44
26% of failures with a mileage on record happened under
36,000 miles, against a national rate of
29%.
NHTSA files every complaint against a named sub-assembly, not just a
system. This is the difference between knowing it was "the engine" and
knowing which part of it — the list to hand a mechanic.
Body
1234.3%
Brake Lights
617.1%
Bulbs
38.6%
Automatic Emergency Braking
38.6%
Adaptive Cruise Control
38.6%
Sun/Moon Roof Assembly
38.6%
Headlights
38.6%
Latch
25.7%
When it fails
Odometer readings owners gave when they filed. About half of all
complaints include one.
Under 1,000 miles
366.3%
1,000 – 9,999 miles
356.1%
10,000 – 24,999 miles
407.0%
25,000 – 49,999 miles
8214.4%
50,000 – 74,999 miles
10818.9%
75,000 – 99,999 miles
13323.3%
100,000 – 149,999 miles
10618.6%
150,000+ miles
305.3%
When owners complained
A spike years after the car went on sale usually means a part wearing
out on schedule across the whole fleet — the kind of pattern no single
owner can see from inside their own car.
Jan 2014peak 27Aug 2026
NHTSA investigations into the 2014 Hyundai Sonata
An investigation is the step before a recall: the agency has seen enough
complaints to look into a pattern itself. An open one means it thinks
something may be wrong and nothing has been fixed yet.
DP22003Opened 12 Sep 2022Closed 12 Dec 2023ENGINE
Loss of Motive Power
The National Highway Traffic Safety Administration (NHTSA) received a letter dated July 13, 2022, petitioning the Agency to initiate a safety defect investigation into loss of motive power allegations attributed to oil drain pan assembly failures on certain Hyundai Motor America, Inc. and Kia America, Inc. vehicles spanning Model Years (MY) 2005-2021. The Petitioners cited examples of complaints indicating that the subject vehicles were experiencing rapid loss of engine oil due to oil drain plug back outs, resulting in loss of motive power and/or catastrophic engine damage. Additional complain...
EA21003Opened 22 Dec 2021Closed 5 Feb 2024ENGINE
Engine Fires
On March 29, 2019, the Office of Defects Investigation (ODI) opened two Preliminary Evaluations (PE19-003 on Hyundai and PE19-004 on Kia) to broadly investigate incidents of non-crash fires (regardless of origin or operational status of the vehicle) on various model year Hyundai and Kia vehicles. During the PE investigations, Hyundai and Kia issued several recalls to address vehicle fires, including those due to engine failures involving various engine types. The remedies for the engine failure recalls typically involve engine inspection (to detect existing damage), and if necessary, engine...
DP21003Opened 12 Nov 2021Closed 20 Jun 2023VEHICLE SPEED CONTROL:THROTTLE
Throttle control system vulnerabilities
The Office of Defects Investigation (ODI) of the National Highway Traffic Safety Administration (NHTSA) received a petition letter dated October 10, 2021, requesting an investigation of possible defects in the electronic throttle control (ETC) system on certain Kia vehicles resulting in the opening of DP21-003. Accordingly, Model Year (MY) 2005-2016 Kia Optima/K5, MY 2006-2015 Kia Sorento, MY 2007-2016 Hyundai Elantra, MY 2007-2016 Hyundai Santa Fe, MY 2006-2015 Hyundai Sonatas are all part of the subject population. The petition was originally filed as a Vehicle Owner Questionnaire that can b...
EA19001Opened 19 Apr 2019Closed 19 Sep 2024AIR BAGS: AIR BAG/RESTRAINT CONTROL MODULE
Electrical overstress
The Office of Defects Investigation (ODI) opened this investigation to determine if the failure of airbags to deploy during severe crashes, in certain vehicles, was the result of a safety related defect. During the investigation a complex failure was studied that can result in non-deployment of subject vehicle air bags and other restraint system devices in severe crash events. The subject vehicles may be equipped with an airbag control unit (ACU) for the supplemental restraint system (SRS) Electronic Control Unit (ECU) manufactured by ZF-TRW. The ECU receives signals from crash sensors mount...
PE19003Opened 29 Mar 2019Closed 22 Dec 2021ELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES
Non-crash Vehicle Fires
During this Preliminary Evaluation (PE), the Office of Defects Investigation (ODI) assessed the scope, frequency and potential safety-related consequences of non-crash vehicle fires caused by both engine failures and failures of other vehicle systems/components in model year (MY) 2011-2014 Hyundai Sonata and Santa Fe vehicles equipped with Theta II and Lambda II engines (approximately 1.3 million vehicles). ODI also reviewed field data of other Hyundai vehicles equipped with Theta II, Gamma, Nu and Lambda engines (approximately 4.8 million). As a result of this PE, Hyundai has issued NHTSA Rec...
DP18003Opened 21 Aug 2018Closed 10 May 2019ELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES
Non-crash Vehicle Fires
In a letter dated June 11, 2018, the Center for Auto Safety (CAS) petitioned the National Highway Traffic Safety Administration (NHTSA) to initiate a safety defect investigation into non-collision related fires on model year (MY) 2011-2014 Kia Optima and Sorento, and Hyundai Sonata and Santa Fe vehicles. In a letter dated July 24, 2018, CAS requested that MY 2010-2015 Kia Soul vehicles be added to the petition. CAS stated that there is a higher number of complaints to NHTSA regarding non-crash fires on these vehicles compared to other similar vehicles. The Office of Defects Investigation (ODI)...
RQ17004Opened 18 May 2017Closed 22 Dec 2021ENGINE
Scope and Timeliness
NHTSA opened Recall Query (RQ) 17-004 to investigate the timeliness and scope of Hyundai?s Theta II GDI engine recalls (Recall Nos. 15V-568 and 17V-226), and Hyundai?s compliance with reporting requirements. On November 23, 2020, the Agency entered into a Consent Order with Hyundai to administratively resolve NHTSA?s assertions of violations of law in connection with RQ17-004. NHTSA?s assertions included that Hyundai may be liable for civil penalties on multiple grounds, including the untimeliness of Recall Nos. 15V-568 and 17V-226, inaccuracies in Hyundai?s recall reports, and that a required...
Recalls on the 2014 Hyundai Sonata
A complaint is one owner's allegation. A recall is the point at which
the manufacturer or a regulator agreed the defect is real and dangerous
enough to fix for free — however old the car is.
United States — NHTSA
22V312000
FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS
Hyundai Motor America (Hyundai) is recalling certain 2013-2014 Sonata vehicles. The low pressure fuel hose that connects the low pressure fuel pump to the direct injection fuel pump may crack over time, due to heat generated within the engine compartment.
Risk: A cracked fuel hose may leak fuel, which can increase the risk of a fire.
20V121000
FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS
Hyundai Motor America (Hyundai) is recalling certain 2013-2014 Sonata vehicles. The low pressure fuel hose that connects the low pressure fuel pump to the direct injection fuel pump may crack over time due to heat generated within the engine compartment.
Risk: If the fuel line cracks, a fuel leak can occur, increasing the risk of a fire.
18V934000
ENGINE
Hyundai Motor America (Hyundai) is recalling certain 2011-2014 Sonata and 2013-2014 Santa Fe Sport vehicles previously repaired under recall numbers 15V-568 and 17V-226. The high pressure fuel pipe that connects to the fuel pump outlet may have been damaged, misaligned, or improperly torqued during the engine replacement procedure, allowing fuel to leak from the pipe.
Risk: A fuel leak in the presence of an ignition source can increase the risk of a fire.
17V617000
SEAT BELTS:PRETENSIONER
Hyundai Motor America (Hyundai) is recalling certain 2011-2014 Sonata and 2011-2015 Sonata Hybrid vehicles previously repaired under recall campaign 17V-152. The seat belt linkages for both front seat belts may detach from the seat belt anchor pretensioners.
Risk: If the seat belt linkage detaches from the seat belt anchorage, it can not properly restrain the occupant in the event of a crash, increasing the risk of injury.
17V226000
ENGINE AND ENGINE COOLING:ENGINE
Hyundai Motor America (Hyundai) is recalling certain 2013-2014 Sonata and Santa Fe Sport vehicles. Machining errors during the engine manufacturing process may cause premature bearing wear within the engine.
Risk: Bearing wear may result in the engine seizing, increasing the risk of a crash.
17V152000
SEAT BELTS:FRONT:ANCHORAGE
Hyundai Motor America (Hyundai) is recalling certain 2011-2014 Sonata and 2011-2015 Sonata Hybrid vehicles. In the affected vehicles, the seat belt linkages for both front seat belts may detach from the seat belt anchor pretensioners.
Risk: In the event of a crash, if the seat belts detach from the anchor pretensioners, it can increase the risk of injury.
14V434000
POWER TRAIN:AUTOMATIC TRANSMISSION
Hyundai Motor Company (Hyundai) is recalling certain model year 2011-2014 Sonata vehicles manufactured December 11, 2009, through May 29, 2014. In the affected vehicles, the transmission shift cable may detach from from the shift lever pin.
Risk: If the transmission shift cable detaches, the transmission gear selection may not match the indicated gear and the vehicle may move in an unintended or unexpected direction, increasing the risk of a crash. Furthermore, when the driver parks the vehicle, despite selecting the 'PARK' position, the transmission may not be in 'PARK.' If the vehicle is not in the 'PARK' position and the parking brake is not applied, there is a risk the vehicle will roll away as the driver and other occupants exit the vehicle or anytime thereafter. A vehicle rollaway increases the risk of injury to exiting occupants and bystanders.
Canada — Transport Canada
Canada runs its own recall programme, and its campaigns do not
always mirror the American ones.
Recall 2024080353,849 units in Canada
Brakes
Issue: On certain vehicles, brake fluid could leak into the control module for the antilock brake system (ABS) and cause it to short circuit. Note: This recall replaces recall R0246 (Transport Canada recall number 2023-527). For the Sonata model, only the Sonata Hybrid model is affected by this recall. Safety Risk: A short circuit could create a fire risk, even while the vehicle is parked and turned off. Corrective Actions: Hyundai will notify owners by mail and advise you to take your vehicle to a dealership to replace the fuse for the ABS module. Hyundai recommends that you should park your vehicle outdoors and away from other vehicles or structures until the recall repairs have been completed.
Recall 20231043,494 units in Canada
Electrical
Issue: Hyundai is conducting a special service campaign to upgrade the safety plug fuse. On certain Sonata Hybrid (HEV) models, the safety plug fuse in the power relay assembly could blow and cause a sudden loss of hybrid system power. Safety Risk: A loss of hybrid system power may increase the risk of a crash. Corrective Actions: Hyundai will notify owners by mail and instruct you to take your vehicle to a dealership to replace the 125-A safety plug with one that has a 150-A rating.
Recall 202224213,474 units in Canada
Fuel System
Issue: Over time, the fuel feed line to the high-pressure fuel pump could leak. If this happens, there could be a fuel odour or fuel leak in the engine compartment. Note: This recall includes all vehicles that didn't have the fuel feed line replaced under recall R0166 (Transport Canada #2020-084). Safety Risk: A fuel leak can create the risk of a fire. Corrective Actions: Hyundai will notify owners by mail and instruct you to take your vehicle to a dealership to replace the fuel feed line.
Recall 202161251,508 units in Canada
Engine
Issue: Hyundai Auto Canada is conducting a Product Improvement Campaign that provides an update to the engine control module to detect potential problems before an engine fails. An engine failure would cause a sudden loss of power with an inability to restart. Note: This only affects vehicles equipped with a 2.4 L MPI engine. For the Sonata model, only the Sonata Hybrid is affected by this campaign. All vehicles previously included in TC # 2021-033 are now part of this new campaign. Vehicles that were previously repaired under campaign R0181 (Transport Canada #2021-033) do not require this software update. Safety Risk: A sudden loss of engine power could increase the risk of an accident. An engine failure could also create the risk of a fire. Corrective Actions: The company will notify owners by mail. Owners will be instructed to take their vehicle to a dealer to update the software for the engine control module. Note: Hyundai recommends that you should always follow the correct vehicle maintenance schedule, which is printed in the Owner's Manual. If you experience unusual engine noise, reduced power, or a check engine/oil warning light, Hyundai advises you to immediately visit a Hyundai dealership to have your vehicle diagnosed.
Recall 202103346,656 units in Canada
Engine
This campaign was replaced by Transport Canada No. 2021-612. Issue: Hyundai Auto Canada is conducting a Product Improvement Campaign that provides an update to the engine control module to detect potential problems before an engine fails. An engine failure would cause a sudden loss of power with an inability to restart. Note: This only affects vehicles equipped with a 2.4 L MPI engine. For the Sonata model, only the Sonata Hybrid is affected by this campaign. Safety Risk: A sudden loss of engine power could increase the risk of an accident. An engine failure could also create the risk of a fire. Corrective Actions: The company will notify owners by mail. Owners will be instructed to take their vehicle to a dealer to update the software for the engine control module. Note: Hyundai recommends that you should always follow the correct vehicle maintenance schedule, which is printed in the Owner's Manual. If you experience unusual engine noise, reduced power, or a check engine/oil warning light, Hyundai advises you to immediately visit a Hyundai dealership to have your vehicle diagnosed.
Recall 202008413,552 units in Canada
Fuel System
This recall was replaced by Transport Canada Recall No. 2022-242. Issue: Over time, the fuel feed line to the high-pressure fuel pump could crack. If this happens, there could be a fuel odour or fuel leak in the engine compartment. Safety Risk: A fuel leak can create the risk of a fire. Corrective Actions: Hyundai will notify owners by mail and instruct you to take your vehicle to a dealer to complete the required repairs.
Recall 2019640275,533 units in Canada
Engine
Issue: Hyundai Auto Canada is conducting a Product Improvement Campaign that provides an update to the engine control module to detect potential problems before an engine fails. An engine failure would cause a sudden loss of power with an inability to restart. Note: This affects Sonata and Santa Fe Sport equipped with a 2.4 L GDI or 2.0 L Turbo GDI engine, as well as Tucson equipped with a 2.4 L GDI engine. Safety Risk: A sudden loss of engine power could increase the risk of an accident. Corrective Actions: The company will notify owners by mail. Owners will be instructed to take their vehicle to a dealer to update the software for the engine control module. Note: Vehicles previously repaired under Product Improvement Campaign R0153 (TC # 2019-130) do not require this software update. Owners can find additional information at <a href="http://www.hyundaiengineinfo.ca">www.hyundaiengineinfo.ca</a>.
Recall 2019130255,370 units in Canada
Engine
Issue: Hyundai Auto Canada is conducting a Product Improvement Campaign that provides an update to the engine control module to detect potential problems before an engine fails. An engine failure would cause a sudden loss of power with an inability to restart. Note: This affects Sonata and Santa Fe Sport equipped with a 2.4 L GDI or 2.0 L Turbo GDI engine, as well as Tucson equipped with a 2.4 L GDI engine. Safety Risk: A sudden loss of engine power could increase the risk of an accident. Corrective Actions: The company will notify owners by mail. Owners will be instructed to take their vehicle to a dealer to update the software for the engine control module. Note: Vehicles repaired under Service Campaigns, C0336, C0344, or C0347, already have this software update. Owners can find additional information at <a href="http://www.hyundaiengineinfo.ca">www.hyundaiengineinfo.ca</a>.
Reports where the owner recorded a crash, a fire, an injury or a death.
at 200,000 milesCarterville, GAFire
FUEL SYSTEM, GASOLINE
The contact owns a 2014 Hyundai Sonata. The contact stated that after parking the vehicle and leaving it unoccupied, the contact's daughter, who was seated on a porch, called the contact informing her there was grey/blue smoke emitting from the vehicle. The smoke increased, and fire droppings were coming from underneath the vehicle. The contact arrived back at the vehicle and saw the fire coming from underneath the vehicle. The fire started in the engine bay. There was property damage to the driveway, and the fire was eventually extinguished by the fire department. Prior to the fire department, the contact's daughter and neighbors attempted to extinguish the fire with water. The front passenger side tire blew out as a result of the fire. The contact's insurance company informed her that her vehicle was included in NHTSA Campaign Number: 22V312000 (FUEL SYSTEM, GASOLINE), the recall repair was never completed due to the owner being unaware of it. The vehicle was left on the driveway. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 200,000.
NHTSA complaint #11721429 — an unverified report by a vehicle owner.
Carlsbad, CAFire
UNKNOWN OR OTHER
I was driving my 2014 Hyundai Sonata in a rural area when smoke suddenly entered the cabin from the engine compartment. Two bystanders waved me down, alerting me that they could see fire underneath the engine compartment. I immediately stopped the vehicle, turned it off, and exited safely. I attempted to contact 911, but reception was poor. The fire spread from the engine compartment and engulfed the vehicle, producing thick smoke that created a serious safety risk. Emergency services arrived approximately 15 minutes after being notified and extinguished the fire. The vehicle burned for approximately 30 minutes in total resulting in total loss. There were no warning lights or messages prior to the fire. The vehicle has not yet been inspected by the manufacturer, police, or insurance representatives beyond the fire report. It was towed and is being stored on private property awaiting investigation.
NHTSA complaint #11707840 — an unverified report by a vehicle owner.
Sun City Center, FLFire
FUEL/PROPULSION SYSTEM
After having work done to repair the head gasket and spark plug. I was on mile ~300 after repairs and was nearing to fill up at a gas station, I started losing power and notice the check engine light was on and Gas smell filled the cabin. When I stopped the hood started smoking and there was a fire under the engine cover. My Vin is not listed on the fuel line recalls and I believe this is an oversite as it lists, faulty High Pressure hose can rupture and cause engine fires and that is exactly what happen in my case. I believe this Vin was Overlooked and I need the repairs complete. I have not completed any repairs because I believe this should have been recalled.
NHTSA complaint #11673697 — an unverified report by a vehicle owner.
Houston, TXFire
EXTERIOR LIGHTING
Engine light is blinking and put safety of my family in danger. I called the close Huyndai dealer also I have a case number. However, it takes forever for them to answer. I only have this car. I am driver and this how I make living. I have no choice in driving this recall vehicle and kill my self and my family. No body care!
NHTSA complaint #11667606 — an unverified report by a vehicle owner.
Houston, TXFire
ENGINE
Engine light is blinking and put safety of my family in danger. I called the close Huyndai dealer also I have a case number. However, it takes forever for them to answer. I only have this car. I am driver and this how I make living. I have no choice in driving this recall vehicle and kill my self and my family. No body care!
NHTSA complaint #11667606 — an unverified report by a vehicle owner.
Houston, TXFire
FUEL/PROPULSION SYSTEM
Engine light is blinking and put safety of my family in danger. I called the close Huyndai dealer also I have a case number. However, it takes forever for them to answer. I only have this car. I am driver and this how I make living. I have no choice in driving this recall vehicle and kill my self and my family. No body care!
NHTSA complaint #11667606 — an unverified report by a vehicle owner.
The most recent complaints
In the owners' own words, exactly as filed with NHTSA.
Williamsburg, VA
ENGINE
The vehicle suffered an abrupt, internal engine seizure while operating in active traffic at highway speeds. This sudden loss of power created an immediate crash hazard, as the vehicle decelerated rapidly in the travel lane, narrowly avoiding a rear-end collision and putting my family and other motorists at extreme risk. The vehicle was towed immediately to an authorized Hyundai dealership service center where it is currently awaiting the physical recall inspection. Prior to the complete engine failure, there were no warning lights, abnormal gauge readings, dashboard messages, or noticeable performance symptoms. The engine seized completely without warning. The vehicle has an open, uncompleted Federal Safety Recall 162 (NHTSA Campaign Number: 16V729000) for this exact engine manufacturing defect and bearing failure.
NHTSA complaint #11758160 — an unverified report by a vehicle owner.
Victorville, CA
STEERING
I am submitting this complaint because I believe this issue presents a serious safety concern. My 2014 Hyundai Sonata experienced a failure related to the steering angle sensor, causing the ESC, ABS, and traction control warning lights to illuminate while driving. As a result, these important safety systems lost functionality and were no longer available to assist in maintaining vehicle stability and traction during normal driving conditions. This failure occurred without warning and required replacement of the steering angle sensor, followed by a required calibration. A critical steering-related component should not fail under normal driving conditions, especially when its failure can disable multiple electronic safety systems. Drivers may not immediately realize that these systems are no longer functioning, increasing the potential risk during emergency maneuvers, wet road conditions, or sudden avoidance situations. While researching this issue, I found that many other Hyundai owners have reported similar steering and electronic stability control problems. I respectfully request that NHTSA investigate whether steering angle sensor failures, related steering system components, or the associated calibration requirements represent a widespread defect affecting 2011–2014 Hyundai Sonata vehicles. If this issue is determined to be common, I ask that Hyundai be required to address the defect through an appropriate recall or extended warranty program so owners are not responsible for repairs involving a critical vehicle safety system.
NHTSA complaint #11751285 — an unverified report by a vehicle owner.
Saint Louis, MO
ENGINE
The check engine lights blinking, it overheats and it shuts down.
NHTSA complaint #11749925 — an unverified report by a vehicle owner.
Shallotte, NC
UNKNOWN OR OTHER
I was driving my 2014 hyundai sonata that I only had for 3 months when it just quit on me. I pulled over and seen when white smoke was coming from the wires.
NHTSA complaint #11747161 — an unverified report by a vehicle owner.
Shallotte, NC
ELECTRICAL SYSTEM
I was driving my 2014 hyundai sonata that I only had for 3 months when it just quit on me. I pulled over and seen when white smoke was coming from the wires.
NHTSA complaint #11747161 — an unverified report by a vehicle owner.
Shallotte, NC
ENGINE
I was driving my 2014 hyundai sonata that I only had for 3 months when it just quit on me. I pulled over and seen when white smoke was coming from the wires.
NHTSA complaint #11747161 — an unverified report by a vehicle owner.
Boston, MA
AIR BAGS
Updated NHTSA Complaint DraftVehicle Information: 2014 Hyundai SonataVIN: [XXX] Incident Date: XXX Description of Safety Defect:While driving on XXX, the vehicle's engine experienced a catastrophic mechanical failure and completely shut off without warning, causing an immediate loss of motive power. This sudden engine stall created an extreme, hazardous traffic safety risk.A subsequent professional inspection revealed that the vehicle's odometer had been illegally rolled back and tampered with by the selling dealership (Johny's Auto Center in 120 bleu hill ave Roxbury, MA) 02119 prior to purchase. The true, undocumented mileage of the engine is significantly higher than indicated, directly causing this sudden component failure. I am reporting this incident both as a critical vehicle safety defect and as a case of illegal odometer fraud. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11747015 — an unverified report by a vehicle owner.
Boston, MA
STEERING
Updated NHTSA Complaint DraftVehicle Information: 2014 Hyundai SonataVIN: [XXX] Incident Date: XXX Description of Safety Defect:While driving on XXX, the vehicle's engine experienced a catastrophic mechanical failure and completely shut off without warning, causing an immediate loss of motive power. This sudden engine stall created an extreme, hazardous traffic safety risk.A subsequent professional inspection revealed that the vehicle's odometer had been illegally rolled back and tampered with by the selling dealership (Johny's Auto Center in 120 bleu hill ave Roxbury, MA) 02119 prior to purchase. The true, undocumented mileage of the engine is significantly higher than indicated, directly causing this sudden component failure. I am reporting this incident both as a critical vehicle safety defect and as a case of illegal odometer fraud. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11747015 — an unverified report by a vehicle owner.
Boston, MA
ENGINE
Updated NHTSA Complaint DraftVehicle Information: 2014 Hyundai SonataVIN: [XXX] Incident Date: XXX Description of Safety Defect:While driving on XXX, the vehicle's engine experienced a catastrophic mechanical failure and completely shut off without warning, causing an immediate loss of motive power. This sudden engine stall created an extreme, hazardous traffic safety risk.A subsequent professional inspection revealed that the vehicle's odometer had been illegally rolled back and tampered with by the selling dealership (Johny's Auto Center in 120 bleu hill ave Roxbury, MA) 02119 prior to purchase. The true, undocumented mileage of the engine is significantly higher than indicated, directly causing this sudden component failure. I am reporting this incident both as a critical vehicle safety defect and as a case of illegal odometer fraud. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11747015 — an unverified report by a vehicle owner.
Oreland, PA
POWER TRAIN
I am submitting this complaint regarding a serious safety issue involving my Hyundai Sonata. While driving under normal conditions, my vehicle suddenly entered a low-power ("limp") mode without warning. The vehicle would not accelerate beyond approximately 30–35 mph, creating a potentially hazardous situation in traffic. At the same time, the check engine light began blinking. The sudden loss of power significantly reduced my ability to maintain traffic speed and safely maneuver the vehicle. This condition could have increased the risk of a rear-end collision or other accident. I brought the vehicle to an authorized Hyundai dealership (Fred Beans Honda Of Abington PH# 215-392-9020) for diagnosis. The dealership confirmed that the vehicle stored Diagnostic Trouble Code (DTC) P1326, related to the Knock Sensor Detection System (KSDS). According to the dealership, the vehicle entered limp mode as a result of this fault. The abrupt reduction in vehicle power and speed occurred without sufficient warning and created a safety concern. I am reporting this incident so that NHTSA can investigate whether this condition represents a broader safety defect affecting Hyundai Sonata vehicles equipped with the KSDS system. Vehicle Information: Make: Hyundai Model: Sonata Model Year: 2014 I request that NHTSA review this issue and evaluate whether additional action is warranted regarding vehicles experiencing DTC P1326 and associated limp-mode operation.
NHTSA complaint #11741142 — an unverified report by a vehicle owner.
Oreland, PA
ENGINE
I am submitting this complaint regarding a serious safety issue involving my Hyundai Sonata. While driving under normal conditions, my vehicle suddenly entered a low-power ("limp") mode without warning. The vehicle would not accelerate beyond approximately 30–35 mph, creating a potentially hazardous situation in traffic. At the same time, the check engine light began blinking. The sudden loss of power significantly reduced my ability to maintain traffic speed and safely maneuver the vehicle. This condition could have increased the risk of a rear-end collision or other accident. I brought the vehicle to an authorized Hyundai dealership (Fred Beans Honda Of Abington PH# 215-392-9020) for diagnosis. The dealership confirmed that the vehicle stored Diagnostic Trouble Code (DTC) P1326, related to the Knock Sensor Detection System (KSDS). According to the dealership, the vehicle entered limp mode as a result of this fault. The abrupt reduction in vehicle power and speed occurred without sufficient warning and created a safety concern. I am reporting this incident so that NHTSA can investigate whether this condition represents a broader safety defect affecting Hyundai Sonata vehicles equipped with the KSDS system. Vehicle Information: Make: Hyundai Model: Sonata Model Year: 2014 I request that NHTSA review this issue and evaluate whether additional action is warranted regarding vehicles experiencing DTC P1326 and associated limp-mode operation.
NHTSA complaint #11741142 — an unverified report by a vehicle owner.
Oreland, PA
FUEL/PROPULSION SYSTEM
I am submitting this complaint regarding a serious safety issue involving my Hyundai Sonata. While driving under normal conditions, my vehicle suddenly entered a low-power ("limp") mode without warning. The vehicle would not accelerate beyond approximately 30–35 mph, creating a potentially hazardous situation in traffic. At the same time, the check engine light began blinking. The sudden loss of power significantly reduced my ability to maintain traffic speed and safely maneuver the vehicle. This condition could have increased the risk of a rear-end collision or other accident. I brought the vehicle to an authorized Hyundai dealership (Fred Beans Honda Of Abington PH# 215-392-9020) for diagnosis. The dealership confirmed that the vehicle stored Diagnostic Trouble Code (DTC) P1326, related to the Knock Sensor Detection System (KSDS). According to the dealership, the vehicle entered limp mode as a result of this fault. The abrupt reduction in vehicle power and speed occurred without sufficient warning and created a safety concern. I am reporting this incident so that NHTSA can investigate whether this condition represents a broader safety defect affecting Hyundai Sonata vehicles equipped with the KSDS system. Vehicle Information: Make: Hyundai Model: Sonata Model Year: 2014 I request that NHTSA review this issue and evaluate whether additional action is warranted regarding vehicles experiencing DTC P1326 and associated limp-mode operation.
NHTSA complaint #11741142 — an unverified report by a vehicle owner.
Butner, NC
ENGINE
Vehicle Information: Year/Make/Model: 2014 Hyundai Sonata Mileage: less than 120,000 miles Ownership: Second owner Complaint: I am filing a complaint regarding a serious engine failure in my 2014 Hyundai Sonata. My vehicle experienced issues beginning with a faulty knock sensor, which escalated into complete engine failure. This issue appears to be identical to problems that have already been identified in recalls involving similar Hyundai Sonata models. Despite experiencing the same symptoms and failure pattern, my specific VIN is not included in the recall. My vehicle has been well maintained, has under 120,000 miles, and should not have experienced a total engine failure under normal conditions. Based on the known recall issues related to engine defects and knock sensor failures, I believe my vehicle is affected by the same underlying defect. I am concerned that vehicles like mine are being excluded from the recall despite having identical safety-related issues. Engine failure while driving presents a serious safety risk, including potential loss of power, stalling, or inability to accelerate in traffic. I have had the car looked by a professional and advised of the engine failure and this is a common issue with this make and model.
NHTSA complaint #11735760 — an unverified report by a vehicle owner.
Raymore, MO
UNKNOWN OR OTHER
I was driving my vehicle on multiple occasions in which the car started to alarm and say, "Check charging system" at which point the car stopped all together. Also, when the cruise control is engaged, it will turn off automatically. It doesn't matter the speed the cruise control is set at, it will turn off.
NHTSA complaint #11735260 — an unverified report by a vehicle owner.
Riverside, CA
SERVICE BRAKES
ABS module/brakes system goes into limp mode randomly, which causes brake malfunction, throwing codes c1233, c1234 and c1236. There was a recall repair performed by Hyundai about two years ago, however there was two options on NHTSA recall 23V651000/campaign 251. One was to replace a safety plug fuse issue, TSB 23-01-054H . That is the recall they performed. The other recall repair which they did not perform is to replace the ABS module. The Hyundai dealer says I must pay a $225 diagnostic fee for them established they need to do this recall repair . Does that sound correct to you?
NHTSA complaint #11730062 — an unverified report by a vehicle owner.
at 79,000 milesNashua, NH
STEERING
The contact owns a 2014 Hyundai Sonata. The contact stated that while driving at an undisclosed speed, the steering wheel became inoperable. There was no warning light illuminated. The contact stated that after driving over a pothole, the steering wheel became difficult to handle, with a clicking sound coming from the steering wheel. The dealer was contacted; however, the vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure, and a case was opened. The approximate failure mileage was 79,000.
NHTSA complaint #11728583 — an unverified report by a vehicle owner.
Cowarts, AL
UNKNOWN OR OTHER
1. Dash Board has several cracks especially over airbag. 2.The location and severity of the cracks raises concerns regarding the structural integrity of the dashboard during a collision and the potential for obstructed airbag deployment. 3.It has not been inspected. I plan to carry it to the dealer tomorrow. 4.There were no warnings. I just realized the cracks a few weeks ago. I had seen them prior but thought they were part of the design until they became more pronounced.
NHTSA complaint #11727822 — an unverified report by a vehicle owner.
Atlanta, GA
ENGINE AND ENGINE COOLING
The contact owns a 2014 Hyundai Sonata. The contact stated that the vehicle failed to start. The vehicle was towed to the residence and was started. The contact stated that the failure was intermittent. The contact stated that while driving at an undisclosed speed, the vehicle stalled. The check engine warning light was illuminated. The vehicle was taken to an independent mechanic, where it was diagnosed with turbo charger failure. The contact was informed that the turbo charger needed to be replaced. The vehicle was not repaired due to the cost. The manufacturer was not contacted. The failure mileage was unknown.
NHTSA complaint #11727565 — an unverified report by a vehicle owner.
Tallmadge, OH
ENGINE
I had gotten an engine back in 2021 because of a recall, and now the newer engine is burning all my oil up.
NHTSA complaint #11722578 — an unverified report by a vehicle owner.
at 200,000 milesCarterville, GAFire
FUEL SYSTEM, GASOLINE
The contact owns a 2014 Hyundai Sonata. The contact stated that after parking the vehicle and leaving it unoccupied, the contact's daughter, who was seated on a porch, called the contact informing her there was grey/blue smoke emitting from the vehicle. The smoke increased, and fire droppings were coming from underneath the vehicle. The contact arrived back at the vehicle and saw the fire coming from underneath the vehicle. The fire started in the engine bay. There was property damage to the driveway, and the fire was eventually extinguished by the fire department. Prior to the fire department, the contact's daughter and neighbors attempted to extinguish the fire with water. The front passenger side tire blew out as a result of the fire. The contact's insurance company informed her that her vehicle was included in NHTSA Campaign Number: 22V312000 (FUEL SYSTEM, GASOLINE), the recall repair was never completed due to the owner being unaware of it. The vehicle was left on the driveway. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 200,000.
NHTSA complaint #11721429 — an unverified report by a vehicle owner.
Atlanta, GA
ELECTRICAL SYSTEM
Odometer Fraud. The contact owns a 2014 Hyundai Sonata. The contact purchased the vehicle on April 28, 2025, with 28,974 miles from a dealer. On January 20, 2026, while attempting to start the vehicle after being parked for a while, the vehicle lost power and failed to start. The contact walked to an AutoZone nearby, where a mechanic diagnosed that the battery and starter needed to be replaced. The vehicle was repaired while with the mechanic, and the contact was informed that the actual mileage on the vehicle was 170,123. The contact reported the issue to the dealer and was informed that it would be investigated; however, the contact had not received any additional information. The dealer had taken possession of the vehicle and informed the contact that payments were still expected despite the odometer discrepancy. The manufacturer was informed of the failure and the odometer discrepancy. The failure mileage was not provided.
NHTSA complaint #11718409 — an unverified report by a vehicle owner.
Odometer Fraud. The contact owns a 2014 Hyundai Sonata. The contact purchased the vehicle on April 28, 2025, with 28,974 miles from a dealer. On January 20, 2026, while attempting to start the vehicle after being parked for a while, the vehicle lost power and failed to start. The contact walked to an AutoZone nearby, where a mechanic diagnosed that the battery and starter needed to be replaced. The vehicle was repaired while with the mechanic, and the contact was informed that the actual mileage on the vehicle was 170,123. The contact reported the issue to the dealer and was informed that it would be investigated; however, the contact had not received any additional information. The dealer had taken possession of the vehicle and informed the contact that payments were still expected despite the odometer discrepancy. The manufacturer was informed of the failure and the odometer discrepancy. The failure mileage was not provided.
NHTSA complaint #11718409 — an unverified report by a vehicle owner.
Arlington, TX
UNKNOWN OR OTHER
I had recall 162 - engine replacement completed in 2024 , now I have fuel leak at high pressure fuel pump, the pump that is a component of the engine has now failed which was installed during the engine replacement which can cause a major fire
NHTSA complaint #11713805 — an unverified report by a vehicle owner.
Arlington, TX
ENGINE
I had recall 162 - engine replacement completed in 2024 , now I have fuel leak at high pressure fuel pump, the pump that is a component of the engine has now failed which was installed during the engine replacement which can cause a major fire
NHTSA complaint #11713805 — an unverified report by a vehicle owner.
Arlington, TX
FUEL/PROPULSION SYSTEM
I had recall 162 - engine replacement completed in 2024 , now I have fuel leak at high pressure fuel pump, the pump that is a component of the engine has now failed which was installed during the engine replacement which can cause a major fire
NHTSA complaint #11713805 — an unverified report by a vehicle owner.