Owners have filed 109 complaints
about the 2021 Hyundai Tucson with NHTSA between 2021 and 2026.
The largest single group is the engine & cooling.
Across this model's run it ranks 17 of 22 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 — 14
Against the median year of the Hyundai Tucson. 50 means typical for this
model; 100 means roughly double.
Severity — 62
11.9% of these complaints
involved a crash, fire, injury or death, against a national rate of
9.7%.
Early failure — 100
67% of failures with a mileage on record happened under
36,000 miles, against a national rate of
29%.
Odometer readings owners gave when they filed. About half of all
complaints include one.
Under 1,000 miles
316.7%
1,000 – 9,999 miles
738.9%
25,000 – 49,999 miles
316.7%
50,000 – 74,999 miles
316.7%
75,000 – 99,999 miles
15.6%
100,000 – 149,999 miles
15.6%
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 2021peak 13Aug 2026
NHTSA investigations into the 2021 Hyundai Tucson
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.
The Office of Defects Investigation (ODI) has received eight Hyundai Motor America (Hyundai) and eight Kia America, Inc. (Kia) Part 573 Recall Reports between 2016 and 2023. The combined 16 safety recalls all involve the antilock braking system (ABS) modules or Hydraulic Electronic Control Units (HECU) manufactured by the equipment supplier Mando. The Part 573 Recall Reports contain varying defect descriptions and differing remedy descriptions for the same or similar equipment supplied by Mando. Safety recalls included in this Audit Query (AQ) review include: Hyundai recalls 20V-520, 20V-543,...
Recalls on the 2021 Hyundai Tucson
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
20V543000
SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE
Hyundai Motor America (Hyundai) recalled certain 2019-2021 Tucson vehicles on September 4, 2020. On December 30, 2020, Hyundai expanded the recall population, and added certain 2016-2018 Tucson vehicles. The Anti-lock Brake Hydraulic Electronic Control Unit (HECU) could corrode internally and cause an electrical short, possibly resulting in an engine compartment fire.
Risk: An engine compartment fire can increase the risk of injury or crash.
Canada — Transport Canada
Canada runs its own recall programme, and its campaigns do not
always mirror the American ones.
Recall 2024552824,695 units in Canada
Label
Issue: On certain vehicles, the compliance label may be missing information in French. The words listed on the label for "Tires", "Rims", "Front" and "Rear" appear in English only, when they should be listed as "Tires/Pneus", "Rims/Jantes", "Front/Avant" and "Rear/Arriere". Canadian regulations require this information to be listed on the label in both English and French. Safety Risk: These small errors do not affect vehicle safety. Corrective Actions: This is not a recall. The company has corrected the compliance label for all new vehicles.
Recall 2022244178,064 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 certain vehicles equipped with a 2.0 L Nu GDI engine. For the Sonata model, only the Sonata Hybrid and Plug-In Hybrid (PHEV) models are affected by this campaign. This is an expansion of R0180 (Transport Canada #2021-575). Any vehicle that received a software update under campaign R0180 does not require this 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: Hyundai will notify owners by mail and advise you to take your 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 2020648144,700 units in Canada
Brakes
Issue: On certain vehicles, a problem in the control module for the antilock brake system (ABS) could cause it to short circuit. Note: This is an expansion of recall 2020-431. This recall does not affect vehicles equipped with Smart Cruise Control(SCC). Safety Risk: A short circuit could create a fire risk. Corrective Actions: Hyundai will notify owners by mail and advise you to take your vehicle to a dealer to revise the ABS fuse wiring and update the ABS control module, if necessary. Hyundai recommends that you should park your vehicle outdoors, and away from other vehicles or structures until the recall repairs have been completed.
Reports where the owner recorded a crash, a fire, an injury or a death.
at 65,000 milesElmsford, NYFire
ENGINE
The contact owned a 2021 Hyundai Tucson. The contact stated that while driving at 10 MPH, an abnormal clicking sound was coming from under the hood. No warning lights illuminated. In addition, the contact managed to pull over to the shoulder of the road, where white smoke was noticed leaking from under the hood, and the intensity was increasing while the smoke turned black. The local fire department arrived on scene to extinguish the fire. The source of the fire was not identified. It was unknown if a Fire report was filed. A police report was filed. No injuries were sustained, and medical attention was not sought. The vehicle was towed to the contact's residence. The vehicle was deemed a total loss as it was majoily consumed by the fire. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 65,000.
NHTSA complaint #11715856 — an unverified report by a vehicle owner.
Cleveland, OHFire
UNKNOWN OR OTHER
I was trying to defrost my windows and my air was on so I clicked the air off so the heat could come on and I started smelling a matalicky smell. I drove to a stop light and when I stopped the back windshield popped and then shattered. I then went to drive again to take the car home and I started to see smoke. Once the light changed I continued to drive to get the car home I happened to look through the rear view mirror and saw fire in the trunk , once I saw the fire I pulled over on a street and stopped the car and then all the sirens in the car started going off so I turned the car off got out and called 911.
NHTSA complaint #11691247 — an unverified report by a vehicle owner.
Sunrise, FLCrash1 injured
SEAT BELTS
On [XXX], the vehicle was involved in a complex multi-impact accident. It was struck by a vehicle on the passenger (right) side and, simultaneously, by another vehicle on the driver's (left) side. (Police Report). During this sequence of collisions, and despite the magnitude of the impact, I must express my extreme concern that the left side airbag (driver's side) did not deploy. This failure caused Mr. [XXX] , the undersigned, to suffer a neck injury as a direct consequence of the incident. Even more seriously, the right-side passenger, Ms. [XXX] , sufferedsevere internal injuries, including three small intestine perforations, according to medical reports. These injuries resulted from improper pressure or malfunction of the seatbelt for that seat. These combined failures, the non-deployment of an essential airbag in impact, and the serious internal injuries caused by the seatbelt represent unacceptable deficiencies in the vehicle's safety systems. We believe that these injuries could have been avoided or mitigated if the safety components had functioned properly, as expected in an accident situation of this magnitude. Therefore, I am at a loss to understand: 1. Why the left side airbag did not deploy during the impact. 2. Why the right passenger seatbelt caused such serious internal injuries, including the three diagnosed intestinal perforations. We also require that concrete and immediate action be taken to address and compensate for the serious injuries suffered by the vehicle's occupants, as this has caused psychological and work- related harm. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11675342 — an unverified report by a vehicle owner.
Sunrise, FLCrash1 injured
AIR BAGS
On [XXX], the vehicle was involved in a complex multi-impact accident. It was struck by a vehicle on the passenger (right) side and, simultaneously, by another vehicle on the driver's (left) side. (Police Report). During this sequence of collisions, and despite the magnitude of the impact, I must express my extreme concern that the left side airbag (driver's side) did not deploy. This failure caused Mr. [XXX] , the undersigned, to suffer a neck injury as a direct consequence of the incident. Even more seriously, the right-side passenger, Ms. [XXX] , sufferedsevere internal injuries, including three small intestine perforations, according to medical reports. These injuries resulted from improper pressure or malfunction of the seatbelt for that seat. These combined failures, the non-deployment of an essential airbag in impact, and the serious internal injuries caused by the seatbelt represent unacceptable deficiencies in the vehicle's safety systems. We believe that these injuries could have been avoided or mitigated if the safety components had functioned properly, as expected in an accident situation of this magnitude. Therefore, I am at a loss to understand: 1. Why the left side airbag did not deploy during the impact. 2. Why the right passenger seatbelt caused such serious internal injuries, including the three diagnosed intestinal perforations. We also require that concrete and immediate action be taken to address and compensate for the serious injuries suffered by the vehicle's occupants, as this has caused psychological and work- related harm. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11675342 — an unverified report by a vehicle owner.
Chicago, IL1 injured
STRUCTURE:BODY
Panoramic sunroof spontaneously exploded when driving on highway. No warning. Sounded like a gunshot. Had to pull over on the highway and clean off as much glass as I could so it did not cause injury or damage to other motorists. Looks like many other Tucson owners are experiencing similar issues. Has not been inspected yet as dealerships and insurance are closed today.
NHTSA complaint #11573848 — an unverified report by a vehicle owner.
Henderson, NVCrash1 injured
AIR BAGS
AIR BAG ON DRIVERS SIDE DID NOT OPEN SAME THING WITH MY 2019 ELANTRA 3 YEARS AGO
NHTSA complaint #11559824 — an unverified report by a vehicle owner.
The most recent complaints
In the owners' own words, exactly as filed with NHTSA.
Dayton, OH
POWER TRAIN
See attached document for complaint.
NHTSA complaint #11758305 — an unverified report by a vehicle owner.
Dayton, OH
ENGINE AND ENGINE COOLING
See attached document for complaint.
NHTSA complaint #11758305 — an unverified report by a vehicle owner.
at 7,800 milesOrlando, FL
ENGINE
The contact owns a 2021 Hyundai Tucson. The contact stated that while driving at an undisclosed speed, the engine blew. No warning lights were illuminated. There was white smoke coming from the hood of the vehicle. The vehicle was towed to the dealer; however, the vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 7,800.
NHTSA complaint #11756204 — an unverified report by a vehicle owner.
Irwin, PA
UNKNOWN OR OTHER
This vehicle burns oil at an alarming rate. I am getting oil changes every 3K miles, and when I take it in, the dipstick is dry. I receive no oil lights to tell me it is low. I just had to get spark plugs and the mechanic at the garage told me this was due to the oil consumption issue in these vehicles. I am at 71,000 miles.
NHTSA complaint #11752252 — an unverified report by a vehicle owner.
Denver, CO
ENGINE
I was driving down [XXX] from my house.My engine light started to flash.I tried to accelerate my car barely went 10 miles an hour.I got Home 2 minutes later.There was major knocking.I had the car towed to [XXX], Hyundai, the only code that is showing up on the diagnostics, is P1326 there is an open class action lawsuit for this exact code. For the rod bearing failure, Hyundai is denying the claim, saying there's a gap in maintenance history on a car. I didn't own yet when I bought the vehicle. It passed a 190 point inspection. There's no way there was anything wrong with this vehicle.I am under fifty thousand miles , and if I was on the highway , it could've been deadly i could not accelerate. No other lights were on in the vehicle, except for the flashing engine light.I have already reported to the better business bureau and they have sent it to arbitration. I have contacted the escalation department for Hyundai.They opened up to separate cases.The agent that was assigned to me didn't even get the code from [XXX], they just denied the claim without it.I have the emails to prove that I had to give it to her. I have.\n All my maintenance history, but as you can see from the text message from XXX Hyundai, they are requesting maintenance for a car that wasn't in my possession yet. They're asking for dates from a year before I had the car, I bought it through EchoPark. I have everyone on my side including fFdelity , as I tried to go through Fidelity and they said they couldn't approve the warranty because of the class action lawsuit against Hyundai for that exact manufacturer malfunction. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11751238 — an unverified report by a vehicle owner.
at 44,807 milesDenver, CO
ENGINE
The contact owns a 2021 Hyundai Tucson. The contact stated that while driving at an undisclosed speed, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended. The check engine warning light was illuminated. The vehicle was driven to the shoulder of the road before being driven to the residence. The contact’s neighbor checked the oil level and informed the contact that the oil pan was empty. The oil level was topped off. The contact stated that the vehicle was not due for an oil change for another 200 miles. The vehicle was towed to the dealer where it was diagnosed with engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The contact was informed that there was no oil in the oil pan. The contact was informed to provide the vehicle service records. The contact stated that the failure was a manufacturer's failure. The manufacturer was made aware of the failure, and two cases were filed. The failure mileage was approximately 44,807.
NHTSA complaint #11749638 — an unverified report by a vehicle owner.
Pensacola, FL
FORWARD COLLISION AVOIDANCE: WARNINGS
Forward Collision Avoidance Assist is on and will not go off. Only has 16,900 miles and is newly out of warranty except for 5yr 50,000 bumper warranty. Dealer at Allen Turner says noat way they will cover this because my Vin is not listed in the latest recall. This vehicle was purchased new and has been maintained as required by manufacture . So, I am [XXX] and have purchased new Hyandais before. I do not at this time in my life have the means to fix this issue. Is there any help on this from Manufacture since this is so newly out of warranty and low mileage. I do not know what to expect as to causing a road accident and hurting myself or someone else. My phone is [XXX] and address is [XXX] Email is [XXX]. Kind regards. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11747598 — an unverified report by a vehicle owner.
Forward crash avoidance system keeps activating causing the car to brake on it's own. This was previously fixed on my car once back in 2022 and now in 2026 it is happening again. I have been trying to communicate with Hyundai regarding additional years to current recall but their not going to even though they have known for years this was an issue and included older models than their current recall. This is not a one time issue this is the second time and until fixed it continously caused the vechile to randomly brake, it's going to get someone seriously injured or killed if they don't address it.
NHTSA complaint #11746359 — an unverified report by a vehicle owner.
Auburndale, FL
VISIBILITY/WIPER
My back windshield shattered unexpectedly
NHTSA complaint #11744687 — an unverified report by a vehicle owner.
at 69,493 milesMaple Heights, OH
FORWARD COLLISION AVOIDANCE
The contact owns a 2021 Hyundai Tucson. The contact stated that upon starting the vehicle on several occasions, the message "Check the Forward Collison System" was displayed, and a collision warning light illuminated. The vehicle was taken to a dealer, where it was diagnosed that the forward-looking camera had experienced an open circuit, and unknown parts needed to be replaced. The contact stated that the failure was associated with NHTSA Campaign Number: 26V316000 (Forward Collison Avoidance). The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 69,493.
NHTSA complaint #11743425 — an unverified report by a vehicle owner.
Eldersburg, MD
ENGINE
My car is burning oil. I have returned multiple times to have it serviced and checked for leaks, but no leaks have been found. Before reaching the recommended 3,000-mile oil change interval, the oil level drops below the minimum mark on the dipstick. In addition, my engine has started making a knocking noise, which is very concerning.
NHTSA complaint #11743079 — an unverified report by a vehicle owner.
Eldersburg, MD
FUEL/PROPULSION SYSTEM
My car is burning oil. I have returned multiple times to have it serviced and checked for leaks, but no leaks have been found. Before reaching the recommended 3,000-mile oil change interval, the oil level drops below the minimum mark on the dipstick. In addition, my engine has started making a knocking noise, which is very concerning.
NHTSA complaint #11743079 — an unverified report by a vehicle owner.
Boynton Beach, FL
ELECTRICAL SYSTEM
Vehicle stalled approximately 15 times between April 17 and May 4, 2026, including once on Interstate XXX at approximately 50mph with minor children ages [XXX] and [XXX] in the vehicle. The oil and battery lights illuminated simultaneously at each stall. Diagnosed as ABS module failure first, then left front wheel speed sensor failure on the 2nd occasion, both confirmed by a Hyundai dealership. Multiple warning lights illuminated, including check blind spot and anti lock brake system messages on the dashboard BUT no error codes following the 2nd repair. The vehicle has been inspected and repaired twice by the manufacturer’s dealership with a 3rd repair currently pending as of May 11, 2026. An open case has been filed with Hyundai Motor America regarding this issue. Issue remains unresolved and the vehicle is still at the dealership. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11737345 — an unverified report by a vehicle owner.
Boynton Beach, FL
ENGINE
Vehicle stalled approximately 15 times between April 17 and May 4, 2026, including once on Interstate XXX at approximately 50mph with minor children ages [XXX] and [XXX] in the vehicle. The oil and battery lights illuminated simultaneously at each stall. Diagnosed as ABS module failure first, then left front wheel speed sensor failure on the 2nd occasion, both confirmed by a Hyundai dealership. Multiple warning lights illuminated, including check blind spot and anti lock brake system messages on the dashboard BUT no error codes following the 2nd repair. The vehicle has been inspected and repaired twice by the manufacturer’s dealership with a 3rd repair currently pending as of May 11, 2026. An open case has been filed with Hyundai Motor America regarding this issue. Issue remains unresolved and the vehicle is still at the dealership. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11737345 — an unverified report by a vehicle owner.
Wareham, MA
ENGINE
2 years ago I had the engine replaced. Now on this new engine which has approximately 29k. The mechanic is telling me that I need a new engine. I called Hyundai and their telling me that is not under warranty anymore. What can be done?
NHTSA complaint #11736406 — an unverified report by a vehicle owner.
Morristown, NJ
ENGINE
My 2021 Hyundai Tucson has experienced repeated engine-related failures associated with a knock sensor (P1326) fault that causes the vehicle to enter limp mode and lose power while driving. This issue has occurred multiple times at approximately 15,000, 17,000, 41,000, and 90,000 miles and has resulted in four separate incidents requiring towing. During these events, the vehicle suddenly loses power and cannot maintain normal driving speed, creating a hazardous condition while in traffic. The vehicle has undergone multiple repair attempts, including an ECM update and three knock sensor replacements. Despite these repairs, the issue continues to recur and no root cause has been identified. Hyundai has not provided a permanent fix and has advised continued operation of the vehicle unless the issue occurs again. This ongoing condition presents a safety concern due to the risk of sudden loss of power while driving.
NHTSA complaint #11735611 — an unverified report by a vehicle owner.
Thornville, OH
ELECTRICAL SYSTEM
In October 2025, while the vehicle was still under Hyundai’s 5-year warranty, an authorized Hyundai dealership diagnosed a significant electrical failure affecting the ABS/ESC system on my 2021 Hyundai Tucson. The vehicle was experiencing multiple dashboard warning lights, intermittent key fob malfunction, alarm system failure, and progressive electrical instability affecting safe operation. Dealer diagnostic trouble codes included C120001, C167581, and C164202, with technician notes stating “ABS sensor wiring harness fault found.” The dealership recommended replacement of the wiring harness, estimated at approximately $12,000, but no warranty repair was performed. Since the initial diagnosis, the condition has continued to worsen with additional warning lights and ongoing ABS/electrical system instability. The issue remains unresolved and continues to affect vehicle safety.
NHTSA complaint #11734552 — an unverified report by a vehicle owner.
Cleveland, OH
FUEL/PROPULSION SYSTEM
I just got an oil change and the oil was completely gone although there was no leak found. Not even a week later my oil is low again. There is smoke coming from the back pipes and the gas is burning out quickly. I just purchased the car last year
NHTSA complaint #11728957 — an unverified report by a vehicle owner.
Schaumburg, IL
ENGINE
I already replaced 3 catalytic converters and I am at 31000 miles. They finally decided to do an oil consumption test but it passed. The other day my car started shaking and my ignition coil and spark plugs were also bad which somehow is related to my engine issues.
NHTSA complaint #11727243 — an unverified report by a vehicle owner.
at 89,000 milesGreenville, SC
ENGINE AND ENGINE COOLING
The contact owns a 2021 Hyundai Tucson. The contact stated that while driving at various speeds, the check engine warning light was frequently illuminated on the instrument panel. The contact had taken the vehicle to various independent mechanics and was informed that the engine was consuming an excessive amount of engine oil. The contact had taken the vehicle to a dealer for service, and upon inspection, the contact was informed that the engine needed to be replaced. The contact was provided with an estimate for the engine replacement. The manufacturer was notified of the failure but offered no assistance. The contact was initially informed that the vehicle was covered under warranty; however, the contact was later informed that there was no warranty on the vehicle. The vehicle was not yet repaired. The failure mileage was approximately 89,000.
NHTSA complaint #11726305 — an unverified report by a vehicle owner.
Fontana, CA
ENGINE
While driving on the freeway, my 2021 Hyundai Tucson SE (72,021 miles) suddenly and without warning lost power and entered limp mode. I was able to safely maneuver to the shoulder and exit the freeway. The check engine light came on and is currently flashing. I took the vehicle to AutoZone where code P1326 was retrieved. I then took it to Pep Boys for a full diagnostic where P1326 was the only code present. The Pep Boys report states the vehicle requires immediate attention. The vehicle remains in limp mode and the check engine light is flashing. The vehicle is not being driven as it cannot safely reach freeway speeds. I contacted Hyundai Customer Care and was assigned Case # XXX. I also contacted a Hyundai dealership who attempted to charge a $225 diagnostic fee despite P1326 being a known Hyundai defect covered under recall/service campaign. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11724214 — an unverified report by a vehicle owner.
Darlington, SC
POWER TRAIN
The vehicle experienced a catalytic converter efficiency failure that was confirmed by an authorized dealership in January 2025. The dealer indicated the catalytic converter required replacement; however, the replacement was not performed, and the vehicle was returned to service with an unresolved emissions defect. Less than one year later, the vehicle developed recurring emissions system failure, loss of power, drivability issues, and repeated warning indicators. The vehicle is currently out of service while additional components, including oxygen sensors and spark plugs, are reported to be affected. The manufacturer is declining to replace the catalytic converter and is attributing the condition to oil consumption despite the prior unresolved emissions failure. The issue has been confirmed by dealership diagnostics and has resulted in prolonged loss of use of the vehicle. This appears to be a continuing engine and exhaust/emissions system defect that was not properly remedied when first identified and may affect safe operation of the vehicle.
NHTSA complaint #11716729 — an unverified report by a vehicle owner.
Darlington, SC
ENGINE
The vehicle experienced a catalytic converter efficiency failure that was confirmed by an authorized dealership in January 2025. The dealer indicated the catalytic converter required replacement; however, the replacement was not performed, and the vehicle was returned to service with an unresolved emissions defect. Less than one year later, the vehicle developed recurring emissions system failure, loss of power, drivability issues, and repeated warning indicators. The vehicle is currently out of service while additional components, including oxygen sensors and spark plugs, are reported to be affected. The manufacturer is declining to replace the catalytic converter and is attributing the condition to oil consumption despite the prior unresolved emissions failure. The issue has been confirmed by dealership diagnostics and has resulted in prolonged loss of use of the vehicle. This appears to be a continuing engine and exhaust/emissions system defect that was not properly remedied when first identified and may affect safe operation of the vehicle.
NHTSA complaint #11716729 — an unverified report by a vehicle owner.
Darlington, SC
FUEL/PROPULSION SYSTEM
The vehicle experienced a catalytic converter efficiency failure that was confirmed by an authorized dealership in January 2025. The dealer indicated the catalytic converter required replacement; however, the replacement was not performed, and the vehicle was returned to service with an unresolved emissions defect. Less than one year later, the vehicle developed recurring emissions system failure, loss of power, drivability issues, and repeated warning indicators. The vehicle is currently out of service while additional components, including oxygen sensors and spark plugs, are reported to be affected. The manufacturer is declining to replace the catalytic converter and is attributing the condition to oil consumption despite the prior unresolved emissions failure. The issue has been confirmed by dealership diagnostics and has resulted in prolonged loss of use of the vehicle. This appears to be a continuing engine and exhaust/emissions system defect that was not properly remedied when first identified and may affect safe operation of the vehicle.
NHTSA complaint #11716729 — an unverified report by a vehicle owner.
at 65,000 milesElmsford, NYFire
ENGINE
The contact owned a 2021 Hyundai Tucson. The contact stated that while driving at 10 MPH, an abnormal clicking sound was coming from under the hood. No warning lights illuminated. In addition, the contact managed to pull over to the shoulder of the road, where white smoke was noticed leaking from under the hood, and the intensity was increasing while the smoke turned black. The local fire department arrived on scene to extinguish the fire. The source of the fire was not identified. It was unknown if a Fire report was filed. A police report was filed. No injuries were sustained, and medical attention was not sought. The vehicle was towed to the contact's residence. The vehicle was deemed a total loss as it was majoily consumed by the fire. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 65,000.
NHTSA complaint #11715856 — an unverified report by a vehicle owner.