2018 Hyundai Santa Fe Complaints

ENGINE,ENGINE AND ENGINE COOLING — Filed 05/14/2026

See attached letter for complaint

POWER TRAIN,SERVICE BRAKES — Filed 04/13/2026

On April 13, 2026, I arrived home and parked the vehicle, engaging the traditional shifter into the "Park" position and turning off the engine. After exiting and standing on the ground to retrieve a purse from the cabin, the vehicle spontaneously and rapidly began reversing. ​As the vehicle gained momentum, I was struck by the driver-side door, which knocked me down and resulted in the vehicle running over me. The vehicle only stopped its rearward movement once it collided with a neighbor's parked car. Only after the vehicle began moving did the horn begin blaring, indicating a delayed rollaway alert. ​This incident resulted in a fractured ankle that required surgical intervention. Despite the traditional shifter being placed in "Park" and the engine being off, the vehicle failed to remain stationary, representing a catastrophic failure of the parking pawl or transmission engagement.

ENGINE — Filed 04/06/2026

My wife was driving the vehicle by the left lane on route 9A northbound on elmsford at a speed around 35 mph. The vehicle suddenly came to stop completely while driving. My wife tried to start it but it didn't start. We called the police to come help us due to the ongoing traffic while the towing was on its way. Our mechanic told us the engine was seized and needs a replacement. The vehicle is a 2018 and has only 118000 miles. We do oil changes periodically every 3000 miles.

ENGINE — Filed 12/18/2025

Catastrophic Engine Failure - Cam phasers blew apart and severely cracked the valve covers. This occurred with no prior warning lights. Minutes before failure, there was engine hesitation and noise and then severely reduced power, causing a safety issue while driving. Vehicle was towed to local Hyundai dealer who identified the cam phaser failure ausing external engine damage of the valve covers and complete loss of oil. This occurred only 3,000 miles after an oil change.

ENGINE — Filed 01/21/2026

Engine Issues: A week ago, on two separate occasions, my Santa Fe cutoff while driving suddenly. A day later, I noticed a rhythmic knocking upon starting my vehicle. The knocking would increase during acceleration and decrease when I let off. I am only at 83,000 miles on this 2018 vehicle. I took the vehicle in for an oil change and they didn't notice anything off about the oil. Afterwards it slightly improved; however, once I was able to get it to the shop they said there were metal shavings in the engine/oil and it was a complete engine failure costing $12,000 to replace. There were no indicators that there was an issue on the dash.

POWER TRAIN,ELECTRICAL SYSTEM,ENGINE — Filed 02/08/2023

Was driving and car turn off on me and wouldn't start I got it towed to Hyundai and they said my engine went out it had oil and everything we don't know why can stopped working has been sitting in my drive way for 3 years because we don't have 13000 that Hyundai told us

ELECTRICAL SYSTEM,UNKNOWN OR OTHER,ENGINE — Filed 09/15/2024

In September 2024, my 2018 Hyundai Santa Fe experienced an unexpected engine lock-up while driving, creating an immediate safety hazard. Vehicle lost power, began smoking, and posed a potential fire risk. Fire department responded to prevent the engine from catching fire and had to spray the engine compartment with high-pressure water. Following this incident, vehicle remained in Hyundai’s possession for ~9 months for engine-related repairs. When we picked up the vehicle after the prolonged repair period, front-facing camera had completely stopped functioning. This camera has always worked prior to the engine lock-up and was functioning the day of the incident. This was reported to the dealership, Hyundai Motor America. A case manager (Nemesh) took the case. Very supportive, helpful and provided a thorough process for investigating the situation. However, all the sudden case was assigned a new case manager (Bryan) and the process immediately changed and the claim was denied. Given the timing and circumstances, the camera failure appears to be the result of electrical or component damage caused during the engine failure/fire-prevention event. The dealership also confirmed that no independent inspector ever assessed the vehicle for secondary damage despite my repeated requests. Hyundai later denied responsibility without conducting any physical inspection of the damage. This sequence of events — sudden engine failure, required fire-response intervention, prolonged repair, and subsequent electrical component failure — raises significant concerns about safety and the potential for related electrical or wiring issues caused by the engine incident. I am reporting this because the underlying engine failure and fire-risk conditions represent a serious safety defect, and related component failures may indicate broader issues with damage resulting from these events. Also Hyundai not letting the independent inspector assess gives me great concern something was missed.

POWER TRAIN,ENGINE — Filed 03/23/2025

•Year/Make/Model: 2018 Hyundai Santa Fe •Mileage: ~91,502 •Date Purchased: April 2023 Description of Problem / Safety Concern: I am reporting a safety-related engine defect in my 2018 Hyundai Santa Fe. The vehicle has developed engine knocking, metal shavings in the oil, and potential timing chain/bearing failure, all of which create a serious risk of engine failure while driving. The vehicle was purchased at 50,855 miles and currently has 91,502 miles, demonstrating that these serious engine defects developed at relatively low mileage. I have attempted to have the issue addressed under Hyundai’s extended warranty, referencing the TXX8 Service Bulletin which provides specific instructions for inspecting, diagnosing, and submitting claims for this type of engine defect. Despite this, two Hyundai dealers have refused to inspect the vehicle or submit a warranty claim: •Hyundai of Trenton refused to inspect or submit any claim. •A second Hyundai dealer demanded nearly $2,000 in fees ($195 diagnostic, $550 additional, $1,200 bearing test) and then denied coverage citing “no codes,” even after acknowledging metal flakes in the oil filter and noisy valve train. I have also contacted Hyundai Corporate three times (two online complaints, one phone call), but the company continues to direct me back to the dealers without resolving the issue. Safety Risk: The ongoing engine defects jeopardize vehicle safety and could result in catastrophic engine failure while driving. Based on research and reports from other owners, these issues may affect other 2018 Hyundai Santa Fe vehicles with similar Theta II engines

ENGINE — Filed 08/06/2025

Engine stopped abruptly without warning while driving vehicle.

POWER TRAIN,ENGINE — Filed 06/28/2025

I am writing to formally request your review and potential intervention regarding a serious and potentially widespread mechanical issue involving Hyundai vehicles, along with the manufacturer’s refusal to honor their well-advertised 100,000-mile powertrain warranty for subsequent (non-original) owners. I am the current owner of a 2018 Hyundai Santa Fe (VIN: [XXX] ) that is experiencing a Continuous Variable Valve Timing (CVVT) system failure, which has led to a critical engine malfunction. The estimated cost of repairs exceeds $7,000, an unexpected and significant financial burden. Despite the vehicle being well within the 100,000-mile threshold, Hyundai has denied warranty coverage solely on the grounds that I am not the original owner. This policy effectively strips coverage from second-hand buyers and, in my view, is misleading given Hyundai’s extensive advertising of the 10-year/100,000-mile powertrain warranty. It creates a false sense of long-term reliability and warranty protection. This is not an isolated case. Numerous complaints have surfaced from Hyundai owners experiencing similar catastrophic engine and powertrain failures—including CVVT malfunctions, rod bearing issues, and engine seizure—raising serious questions about: The safety and reliability of Hyundai's engine systems; The fairness and transparency of Hyundai’s warranty terms and advertising; Potentially systemic manufacturing or design flaws impacting thousands of vehicles on U.S. roads. I respectfully urge the NTSB to review whether such defects present broader safety implications and to assess whether Hyundai’s current warranty practices reflect responsible corporate and consumer protection standards. Please let me know if additional information is required, including repair estimates, maintenance records, or correspondence with Hyundai representatives. I appreciate your time and attention to this matter that is affecting many vehicle owners beyond my individual case. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)