2015 Hyundai Santa FE Sport problems

ENGINE AND ENGINE COOLING

See Attached Letter For Complaint

NHTSA complaint #11758550 — an unverified report by a vehicle owner.

ELECTRICAL SYSTEM

The vehicle suffered a severe engine overheating failure that created an immediate fire risk and electrical safety signaling failure. A brand-new replacement engine was installed by an authorized dealership in April 2026 under a goodwill warranty and had only been driven ~ 3,100 miles since installation. While operating the vehicle, the air conditioning suddenly stopped functioning. Upon restarting, the check engine light illuminated; however, there was never any dashboard temperature warning indicator, notification, or chime to alert the driver to an active overheating situation. Shortly after, the engine completely disabled itself and died while in transit in a parking lot. AAA was contacted to tow the vehicle. Smoke was visible coming out of the engine's oil dipstick and oil intake spout before being towed. After being towed home, an overwhelming chemical burning odor was noted and continued to get worse. A physical check revealed that the oil level on the dipstick was critically overfilled a full inch above the maximum fill line. The local fire department responded to the scene to mitigate the thermal risk, ordered the battery disconnected due to safety hazards, and deemed the vehicle entirely unsafe to operate or connect to power. This represents a catastrophic failure of critical safety equipment and onboard driver warning networks on a newly installed engine assembly, presenting an active safety and fire hazard to passengers. An official corporate safety case has been opened with Hyundai Motor America under Case Number: 43112676.

NHTSA complaint #11756640 — an unverified report by a vehicle owner.

ENGINE

The vehicle suffered a severe engine overheating failure that created an immediate fire risk and electrical safety signaling failure. A brand-new replacement engine was installed by an authorized dealership in April 2026 under a goodwill warranty and had only been driven ~ 3,100 miles since installation. While operating the vehicle, the air conditioning suddenly stopped functioning. Upon restarting, the check engine light illuminated; however, there was never any dashboard temperature warning indicator, notification, or chime to alert the driver to an active overheating situation. Shortly after, the engine completely disabled itself and died while in transit in a parking lot. AAA was contacted to tow the vehicle. Smoke was visible coming out of the engine's oil dipstick and oil intake spout before being towed. After being towed home, an overwhelming chemical burning odor was noted and continued to get worse. A physical check revealed that the oil level on the dipstick was critically overfilled a full inch above the maximum fill line. The local fire department responded to the scene to mitigate the thermal risk, ordered the battery disconnected due to safety hazards, and deemed the vehicle entirely unsafe to operate or connect to power. This represents a catastrophic failure of critical safety equipment and onboard driver warning networks on a newly installed engine assembly, presenting an active safety and fire hazard to passengers. An official corporate safety case has been opened with Hyundai Motor America under Case Number: 43112676.

NHTSA complaint #11756640 — an unverified report by a vehicle owner.

ENGINE

While I was driving my Theta engine got seized and Hyundai denied extended warranty of power train.

NHTSA complaint #11750711 — an unverified report by a vehicle owner.

ENGINE

Today while driving to church we started hearing a ping noise ever so often. This just started then . After leaving church to go home the pinging noise got louder than the engine stalled and wouldn't start again. I had to have my car towed to my house. That is where it is now. The tow truck driver said that it was a rod. He said that he was mostly sure that it was happened. He stated that he has towed similar ones like mine with the same problem.

NHTSA complaint #11749858 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL

Today while driving to church we started hearing a ping noise ever so often. This just started then . After leaving church to go home the pinging noise got louder than the engine stalled and wouldn't start again. I had to have my car towed to my house. That is where it is now. The tow truck driver said that it was a rod. He said that he was mostly sure that it was happened. He stated that he has towed similar ones like mine with the same problem.

NHTSA complaint #11749858 — an unverified report by a vehicle owner.

ELECTRICAL SYSTEM

For a few months- the ABS light, Downhill assist light, and Slippery road light have all been on. Read it could be due to a bad sensor. Then on Saturday July 4th, I turned the car on and the Ebrake light was on but my ebrake was NOT initiated. Car was making a low humming noise on front passenger side of vehicle as well. I read the ebrake light could come on due to low brake fluid, so I wanted to drive it around the block to further try and diagnose the issue. My car then made a pop noise and started smoking from where the ABS pump is located and my tail lights all started flickering like Christmas lights. I instantly turned the car off and disconnected the battery to prevent an electrical fire. UPON researching- there is a recall for 2015 Santa Fe’s for this exact issue except mine isn’t on the list. I need to talk to someone who has seniority upon this situation because I have called Hyundai Customer service and my local dealership and nothing is being done or nobody cares to resolve this situation. My car is currently at a trusted local garage awaiting repair- I can not tow it back and forth between the garage and a dealership. I rely on my car for my children and work.. I can’t play around waiting for them to inspect it weeks from now. This is a serious issue as my children were also in the car. Everything is VERY similar to the recall on other 2015 Santa Fe’s..

NHTSA complaint #11749067 — an unverified report by a vehicle owner.

SERVICE BRAKES

For a few months- the ABS light, Downhill assist light, and Slippery road light have all been on. Read it could be due to a bad sensor. Then on Saturday July 4th, I turned the car on and the Ebrake light was on but my ebrake was NOT initiated. Car was making a low humming noise on front passenger side of vehicle as well. I read the ebrake light could come on due to low brake fluid, so I wanted to drive it around the block to further try and diagnose the issue. My car then made a pop noise and started smoking from where the ABS pump is located and my tail lights all started flickering like Christmas lights. I instantly turned the car off and disconnected the battery to prevent an electrical fire. UPON researching- there is a recall for 2015 Santa Fe’s for this exact issue except mine isn’t on the list. I need to talk to someone who has seniority upon this situation because I have called Hyundai Customer service and my local dealership and nothing is being done or nobody cares to resolve this situation. My car is currently at a trusted local garage awaiting repair- I can not tow it back and forth between the garage and a dealership. I rely on my car for my children and work.. I can’t play around waiting for them to inspect it weeks from now. This is a serious issue as my children were also in the car. Everything is VERY similar to the recall on other 2015 Santa Fe’s..

NHTSA complaint #11749067 — an unverified report by a vehicle owner.

STEERING

FHW Garage used car dealer [XXX], sold this Hyundai Santa fe 2015 knowing the vehicle is defective. It Stalls and stops in the middle of the road in High Traffic. This Hyundai Santa Fe 2015 Lock up the Steering Wheel, Lock up the breaks, Lock up the gas. it Stalls and stops without Warning then after it freeze and stop it flashes all of the Warning Lights on the dash board. FHW Garage is Falsely Advertising this vehicle in Excellent Condition. Its Advertised on Craigs List, and [XXX]. I was almost in a Serious Accident. [XXX] keeps getting his people in the workshop to Machanically Rig the Vehicle to run and drive until someone gets killed when this vehicle is in a terrible Accident. The Gas Cap dont screw on properly. Fhw Garage [XXX] sold me this Vehicle with full knowlege of the Mechanical Defects, and refuses to give my money back. I paid $5,400 Cash plus traded my car. The Hyundai Santa fe was $6,900. Deceptive Practices Fraud, and Title Jumping. FHW still have the two cars after I purchased them. I would like to see FHW Dealer License Suspended or Revoked. Give my money back and return my car. I will be filing a complaint Affidavit with the FLHSMV. [XXX] lied on the Bill of Sales how much I paid and he put $900 in his pocket. I will also file a complaint to FHW [XXX]. For defrauding me, Misrepresentation saying the Vehicle is in Excellent Condition when its Mechanically Defective, and Dangerous should not be on the road to kill someone. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA complaint #11747002 — an unverified report by a vehicle owner.

ELECTRICAL SYSTEM

FHW Garage used car dealer [XXX], sold this Hyundai Santa fe 2015 knowing the vehicle is defective. It Stalls and stops in the middle of the road in High Traffic. This Hyundai Santa Fe 2015 Lock up the Steering Wheel, Lock up the breaks, Lock up the gas. it Stalls and stops without Warning then after it freeze and stop it flashes all of the Warning Lights on the dash board. FHW Garage is Falsely Advertising this vehicle in Excellent Condition. Its Advertised on Craigs List, and [XXX]. I was almost in a Serious Accident. [XXX] keeps getting his people in the workshop to Machanically Rig the Vehicle to run and drive until someone gets killed when this vehicle is in a terrible Accident. The Gas Cap dont screw on properly. Fhw Garage [XXX] sold me this Vehicle with full knowlege of the Mechanical Defects, and refuses to give my money back. I paid $5,400 Cash plus traded my car. The Hyundai Santa fe was $6,900. Deceptive Practices Fraud, and Title Jumping. FHW still have the two cars after I purchased them. I would like to see FHW Dealer License Suspended or Revoked. Give my money back and return my car. I will be filing a complaint Affidavit with the FLHSMV. [XXX] lied on the Bill of Sales how much I paid and he put $900 in his pocket. I will also file a complaint to FHW [XXX]. For defrauding me, Misrepresentation saying the Vehicle is in Excellent Condition when its Mechanically Defective, and Dangerous should not be on the road to kill someone. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA complaint #11747002 — an unverified report by a vehicle owner.

ENGINE

On 4/25/2026 I lost power on business freeway an orange light flash on along with whining noise I had to steer to right side shoulder for safety. Had it towed to dealership on 4/27/2026 they informed me 3 days later on 4/30/2026 that my car overheated. My car never overheated no smell of coolant nor no steam from the car when I exit to shoulder and turn car off. Retrieved manual from glove compartment it stated it had went into limp model. This has been a constantly nightmare my family could have been planning a funeral. These car manufacturers needs to be held accountable for their vehicle.

NHTSA complaint #11746986 — an unverified report by a vehicle owner.

SERVICE BRAKES

FHW Garage used car dealer [XXX], sold this Hyundai Santa fe 2015 knowing the vehicle is defective. It Stalls and stops in the middle of the road in High Traffic. This Hyundai Santa Fe 2015 Lock up the Steering Wheel, Lock up the breaks, Lock up the gas. it Stalls and stops without Warning then after it freeze and stop it flashes all of the Warning Lights on the dash board. FHW Garage is Falsely Advertising this vehicle in Excellent Condition. Its Advertised on Craigs List, and [XXX]. I was almost in a Serious Accident. [XXX] keeps getting his people in the workshop to Machanically Rig the Vehicle to run and drive until someone gets killed when this vehicle is in a terrible Accident. The Gas Cap dont screw on properly. Fhw Garage [XXX] sold me this Vehicle with full knowlege of the Mechanical Defects, and refuses to give my money back. I paid $5,400 Cash plus traded my car. The Hyundai Santa fe was $6,900. Deceptive Practices Fraud, and Title Jumping. FHW still have the two cars after I purchased them. I would like to see FHW Dealer License Suspended or Revoked. Give my money back and return my car. I will be filing a complaint Affidavit with the FLHSMV. [XXX] lied on the Bill of Sales how much I paid and he put $900 in his pocket. I will also file a complaint to FHW [XXX]. For defrauding me, Misrepresentation saying the Vehicle is in Excellent Condition when its Mechanically Defective, and Dangerous should not be on the road to kill someone. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA complaint #11747002 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING

The contact owns a 2015 Hyundai Santa Fe Sport. The contact stated that while driving approximately 65-70 MPH, the check engine warning light started flashing, and the vehicle stalled. The contact was able to pull over to the side of the road, where the vehicle failed to restart and was towed to a parking lot, where a mobile mechanic diagnosed the vehicle and determined that the engine had seized. The vehicle was towed to the residence and then towed to the dealer, where it was diagnosed. The dealer informed the contact that the engine had failed, and there was sludge in the engine oil. The dealer informed the contact that the engine replacement could not be covered due to missing oil change documentation prior to the ownership of the vehicle. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 155,000.

NHTSA complaint #11730805 — an unverified report by a vehicle owner.

ENGINE

Engine failed while driving down the road, car was looked at by two mechanics with no known reason for engine failure so car was took to Hyundai of murfreesboro for diagnostic testing and was there for a total of 12 days for inspection, in which during that time i as asked to submit maintenance records for vehicle which i provided 18 pages of oil changes, other records. I was then told my claim was denied by Hyundai due to maintenance neglect as worded by the technician through a text message “is not proceeding with coverage on the engine due the cause of engine failure being maintenance neglect ” i received to other valid reason or cause, nor via email or in writing only a text message.

NHTSA complaint #11729381 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING

The contact’s daughter owns a 2015 Hyundai Santa Fe Sport. While the owner was driving approximately 70 MPH, the engine started making a knocking sound. There were no warning lights illuminated. The driver called the contact and was advised to pull over to the side of the road and turn off the vehicle. Once the vehicle was turned off, it was towed to a certified mechanic who was unable to diagnose the vehicle. The vehicle was then towed to another mechanic, who diagnosed the vehicle with engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The vehicle was then towed to a dealer, who confirmed the failure and that the engine needed to be repaired. The dealer informed the contact of a Class Action Lawsuit for the engine failure and that the engine could be repaired; however, because the vehicle had not received the software update for Hyundai Campaign: (Hyundai TXXM Warranty Extension Number: 966/953/TXXM); the vehicle was no longer eligible to receive the engine replacement. The vehicle was not repaired. The manufacturer was made aware of the issue. The manufacturer opened a case. The failure mileage was 86,204.

NHTSA complaint #11728772 — an unverified report by a vehicle owner.

ENGINE

The contact owns a 2015 Hyundai Santa Fe Sport. The contact stated that the vehicle was taken to the local dealer, where it was diagnosed with a blown engine. The check engine warning light was illuminated. The vehicle was not repaired. The manufacturer was contacted, and the warranty service was declined because the oil maintenance records were not available. The failure mileage was approximately 114,080.

NHTSA complaint #11728707 — an unverified report by a vehicle owner.

EXTERIOR LIGHTING

My 2015 Hyundai Santa Fe with approximately 101,000 miles has experienced gradual deterioration of both low beam headlights. The light output is extremely dim and unsafe for night driving. Visibility is significantly reduced, making it difficult to see lane markings, pedestrians, and road hazards. The issue developed gradually over time and affects both headlights equally, suggesting an internal projector or reflector failure rather than a bulb issue. Bulbs have been checked/replaced, but brightness remains poor. This condition creates a serious safety hazard when driving at night. I am requesting investigation into potential headlight projector or reflector defects.

NHTSA complaint #11721517 — an unverified report by a vehicle owner.

UNKNOWN OR OTHER

SUBJECT: Sabotage of Safety-Related Engine Test via Unauthorized Modification DESCRIPTION: While my vehicle was undergoing an official manufacturer oil consumption test for a potential engine replacement warranty claim, a dealership in Lincolnwood, IL damaged the oil pan threads. Instead of a proper OEM repair, they installed a non-standard, oversized self-tapping "KKB" bolt without my knowledge or consent to conceal the damage. SAFETY RISK: Two independent certified mechanics have verified this as a hazardous "quick-fix." This non-OEM bolt relies on compromised aluminum threads and poses a severe risk of sudden, catastrophic oil loss, which could lead to engine seizure and fire while driving. MANUFACTURER NEGLIGENCE: The manufacturer has been presented with photographic and independent expert evidence confirming this unauthorized modification. Despite the clear safety hazard, the manufacturer has repeatedly delayed resolution through multiple follow-up postponements. CONSEQUENCES: This unauthorized modification has halted the engine safety test, leaving the vehicle with both a failing engine and an unsafe oil pan. The manufacturer has refused to provide safe alternative transportation while the vehicle is in this hazardous state during extreme winter conditions. I am seeking immediate intervention to ensure the vehicle is restored to factory safety standards and the engine safety test is completed.

NHTSA complaint #11714372 — an unverified report by a vehicle owner.

ENGINE

Dealer failure to to remedy engine replacement under settlement. I am entitled under the March 1, 2022, Settlement Agreement (the “E2 Settlement”) due to recurring Theta II engine failures caused by the oil-starvation/connecting-rod bearing defect. Vehicle stalling on highways and heavy traffic, Repeated codes and failures of MAP sensors, VVT solenoids, camshaft position sensors, starters (×3), batteries (×2), turbo wastegate, fuel pump, EVAP canister, thermostats/housings, etc. — all downstream symptoms of oil starvation and bearing failure Hyundai dealers (Hyundai of Palm Springs and others) have continued to misdiagnose and charge me for unrelated repairs while refusing to acknowledge the covered defect in the replacement engine. Relief Demanded Under the E2 Settlement Pursuant to Settlement ¶¶ 4.1, 4.2, 5.1, 5.2, and 6, I demand the following within fourteen (14) days: Full replacement of the failed engine with a new or remanufactured long-block assembly at $0 out-of-pocket cost to me, including all related gaskets, hoses, sensors, turbocharger, and PCM reflash: Full reimbursement of all out-of-pocket repair expenses incurred since the 2022 replacement (approximately $8,178.50+ $150 for two maxed out Triple A cards, and a new rental car for this week at $1500.00 total to date $10,148.50— Reimbursement of all towing and rental-car expenses (receipts enclosed); Compensation for diminished value of the vehicle. Confirmation that the Lifetime Warranty remains in full force on any future engine. In the alternative, a cash buyback of $25,000 in full satisfaction of all claims. This vehicle has suffered two qualifying Theta II engine failures, the second occurring in a warranty replacement engine. Hyundai of Palm Springs continued refusal to properly honor the settlement has caused extreme hardship, safety risks (multiple freeway/intersection stalls), and thousands of dollars in unnecessary expense

NHTSA complaint #11706574 — an unverified report by a vehicle owner.

ENGINE

GDFI MODOR IS BURNING GAS AND OIL TOO QUICKLY Randomly shutting off Burning too much oil

NHTSA complaint #11696760 — an unverified report by a vehicle owner.

POWER TRAIN

I am writing to express my concern regarding an ongoing and persistent issue with excessive engine oil consumption in my 2015 Hyundai Santa Fe, Subject: Severe Oil Consumption Issue - 2015 Hyundai Santa Fe - VIN: [XXX] The vehicle consumes an alarming amount of oil, approximately 1 quart every 300 miles. This rate of consumption is far beyond what is considered normal and strongly suggests a serious mechanical or manufacturing defect. I have already taken the vehicle to a mechanic to diagnose and attempt to resolve this problem. Based on their professional advice, the following parts were recently replaced: 1.Engine Valve Cover Gasket 2.Turbo Charger Oil Line 3.Spark Plugs Unfortunately, despite these repairs, the issue of excessive oil consumption remains unresolved. The rate of oil loss remains consistent and dangerously high. This was first informed by a service center when I took the car for a random check. Then, after traveling 1,000 miles, the engine oil level dropped again. After that, I am keeping an eye on that. This level of oil consumption poses a significant risk to the engine's long-term health and reliability, and it is a major inconvenience and expense for me as the owner. I am deeply concerned that a major engine component may be failing. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA complaint #11689911 — an unverified report by a vehicle owner.

ELECTRICAL SYSTEM

I am writing to express my concern regarding an ongoing and persistent issue with excessive engine oil consumption in my 2015 Hyundai Santa Fe, Subject: Severe Oil Consumption Issue - 2015 Hyundai Santa Fe - VIN: [XXX] The vehicle consumes an alarming amount of oil, approximately 1 quart every 300 miles. This rate of consumption is far beyond what is considered normal and strongly suggests a serious mechanical or manufacturing defect. I have already taken the vehicle to a mechanic to diagnose and attempt to resolve this problem. Based on their professional advice, the following parts were recently replaced: 1.Engine Valve Cover Gasket 2.Turbo Charger Oil Line 3.Spark Plugs Unfortunately, despite these repairs, the issue of excessive oil consumption remains unresolved. The rate of oil loss remains consistent and dangerously high. This was first informed by a service center when I took the car for a random check. Then, after traveling 1,000 miles, the engine oil level dropped again. After that, I am keeping an eye on that. This level of oil consumption poses a significant risk to the engine's long-term health and reliability, and it is a major inconvenience and expense for me as the owner. I am deeply concerned that a major engine component may be failing. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA complaint #11689911 — an unverified report by a vehicle owner.