2015 Hyundai Santa Fe Sport: engine failure

Filed Jul 15, 2026 · Engine · TN

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

Filed Apr 13, 2026 · Engine · 155,000 miles · GA

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.

Filed Apr 6, 2026 · Engine · TN

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.

Filed Apr 2, 2026 · Engine · 114,080 miles · HI

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.

Filed Apr 2, 2026 · Engine · 86,204 miles · AL

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.

Filed Jan 29, 2026 · IL

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.

Filed Dec 22, 2025 · Engine · CA

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

Filed Jul 2, 2025 · Engine · GA

Despite regular oil changes and maintenance. Engine failed due to lack of oil at 122,000 miles. Complete oil change was done at 120,000 miles. Tune up completed at 118,000 miles

Filed Apr 11, 2025 · Engine · CT

Oil consumption issues, can cause engine failure while driving. Car burns 2-3 quarts every 1,000 miles car takes just over 5qt to fill. Issues stated at around 70,000 now at 82,000. This is a long standing issue that needs to be addressed on hundreds of thousands of vehicles with the GDI engines

Filed Nov 7, 2024 · Engine · 128,000 miles · MO

The contact owns a 2015 Hyundai Santa Fe Sport. The contact stated that while driving home at approximately 25 MPH, the engine seized with several unknown warning lights illuminated. The contact was able to park the vehicle on the side of the road safely. The contact attempted to restart the vehicle however, the vehicle failed to restart. The vehicle was towed to an independent mechanic for diagnosis. The contact was informed that the engine had seized and needed to be replaced. The vehicle was next towed to the dealer to be diagnosed. The dealer confirmed that the engine had seized and needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure. The approximate failure mileage was 128,000.

Filed May 23, 2024 · Engine · SC

The contact owns a 2015 Hyundai Santa Fe Sport. The contact stated while driving approximately 35 MPH, the vehicle started losing motive power. The contact depressed the accelerator pedal; however, the vehicle continued to lose motive power and then stalled. The contact stated no warning light was illuminated. The contact had the vehicle towed to a local dealer, where it was diagnosed and determined that the engine needed to be replaced. The contact was informed that the engine control software update was not performed, and the vehicle did not qualify for an engine replacement. The vehicle was not repaired. The manufacturer was not informed of the failure. The failure mileage was unknown.

Filed Feb 17, 2022 · Engine · 90,088 miles · FL

The contact's mother owns a 2015 Hyundai Santa Fe Sport. The contact stated that while her mother was driving at an undisclosed speed, the vehicle made an abnormal sound. The contact's mother was able to drive to her residence; however, the vehicle was not able to restart. The vehicle was towed to the dealer and diagnosed with engine failure. The contact was informed that the engine needed to be replaced and that there was a Service Campaign Number: 953 (ECM & Cluster Update - Engine Monitoring Logic Product Improvement) associated with the VIN that was unrepaired. The contact's mother did not receive notification of the Service Campaign. The vehicle was not repaired and remained at the dealer. The manufacturer was made aware of the failure but informed the contact that the vehicle was out of warranty. The failure mileage was 90,088.