2018 Hyundai Tucson

I am submitting this formal safety complaint regarding my 2018 Hyundai Tucson. The vehicle has 101,900 miles and has been well maintained. Recently, it began experiencing severe performance issues, including difficulty accelerating and consuming oil at an abnormal rate. The dealership diagnosed the problem as a failed catalytic converter with an estimated repair cost of over $8,000. While Hyundai has an active recall on the engine for this model year, they have stated that my specific problem is not covered, despite the fact that the catalytic converter failure appears to be directly related to the engine defect. The oil consumption and acceleration issues raise serious safety concerns, as the vehicle can lose power unexpectedly while driving. I am a teacher, a parent, and have one child with special needs. I have no other form of transportation and am still making payments on a car I cannot safely drive. Hyundai’s refusal to address this issue as part of the known recall leaves me with an unsafe and inoperable vehicle through no fault of my own. I believe this matter warrants further investigation by the NHTSA, as it suggests that related component failures stemming from the defective engine are not being adequately addressed, leaving owners at financial and safety risk. I respectfully request that the NHTSA investigate whether Hyundai is failing to address a known defect’s full scope and to take appropriate action to ensure the safety and fair treatment of affected consumers. Thank you for your attention to this matter.

Evidence package for dealer fraud: demand letter, SMS threats, sales contract, diagnostic report. Catalytic converter failure caused by chronic oil overfill (2+ quarts excess). Symptoms: - Loud whistling noise from exhaust - Severe power loss (unable to reach 60 mph) - Check engine light activation (codes P0011/P000A) Safety risks: 1. Stalling hazard at highway speeds 2. Fire risk from clogged converter 3. Engine seizure due to oil contamination Confirmed by Hyundai dealer (Evansville, IN) on [XXX] - ONE DAY AFTER PURCHASE. Defect existed pre-sale: - Dealer admitted exhaust issue in writing: "probably will be in the exhaust" - Formal demand letter documented hidden defects on 04/28/2025 - Vehicle returned to dealer on 04/24/2025 where it remains Evidence confirms fraud: - Diagnostic report shows pre-existing conditions - Dealer demanded $300 to release vehicle, then $900 for repairs - "As-is" claim invalid due to defect concealment Warning signs appeared immediately post-purchase. Vehicle available for inspection. Legal violations: - Clean Air Act (emissions warranty breach) - KRS 367.110 (deceptive acts) - FTC Used Car Rule (undisclosed defects) INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

29 days after I bought a 2018 Hyundai Tucson. The vehicle started making a ticking noise and stopped accelerating. I called the dealership and they said we didn't get a warranty. I said no that isn't correct, no warranty was offered and after seeing ALL the known engine problems I understand why ken ganley in medina wouldn't offer one. Now not even a month into having this vehicle, I have a brand new 5 year loan and a vehicle that won't move until I put a new engine in it and the dealership won't do anything for me. This is the worst experience I have ever had purchasing a vehicle

Since I purchased the car in 2018 I took great care of it, keeping the services going on time. But recently in October 2024 even tough I did services the oil service’s sign keep on showing up. I then schedule an appointment with a dealer ship near my area in January and they told me that they were no oil in the car. But I show them the date ans mileage on my stickers I specified that is the reason I am here and to double check for me for filtration because something is wrong, they told me that the car was fine. Days after I had to go in my regular service place for another service and on May I drove the car from Massachusetts to New York and in the middle of the way car start shaking, making noise and when I drove it to a shop they diagnose a failed engine. I left the car in Goshen NY in a Hyundai dealer ship and they told me a valve un the engine was burned and that where the problem came from . They said , they fixed it. A friend pick up the car and 30 mnt driving it police came to rescinde her in the highway, they then told me that’s it’s was a failed engine and days after ask for services record, I provide the last 6 times , they asked me from 0 until today. The shop were I take care of the car don’t keep record from so long. Talking about 2018. They said they won’t fixed it without those record . The car is still under warranty with 71321 miles and I have it for 7 years.

My 2018 Hyundai Tucson 2.0L GDI engine with only 79,000 miles was "knocking" and wouldn't accelerate. We pulled over and towed the vehicle to the local Hyundai Dealer who declared "oil level good but failed bearing clearance test". Diagnosed with a rod and bearing failure. They submitted to Hyundai Motor Warranty the vehicle needed new engine. They declined. I know this is covered under the Hyundai Engine 2 Class action lawsuit with the extended 15 year/150,000 mile warranty as a result of the catastrophic engine failures. I have all oil change service records for every 5,000-6,000 miles while I was the second owner, as well as, have obtained another from the dealer who bought it from a rental/lease company starting at 14,000 miles. Hyundai Corporate is claiming "exceptional maintenance neglect" because of one missing oil change record from the rental company that I may not be able to obtain as the paper trail for the rental car company only states first owner was rental/fleet

Component: Engine Vehicle: 2018 Hyundai Tucson VIN: [XXX] Approx. Mileage at Failure: 79,413 miles Incident Date: [XXX] Where It Happened: While driving [XXX] At 79,413 miles, my 2018 Hyundai Tucson (VIN: [XXX}) suffered complete engine failure without warning. The vehicle had been properly maintained (records from Express Oil Change & Tire Engineers), and was operating under normal conditions. The dealership diagnosed total engine failure and quoted $7,723.88 for replacement. They are not replacing the engine with the same type, which may indicate a known issue. There are no active recalls, but similar engines in Hyundai vehicles from this era have been subject to recalls and warranty extensions. I believe this may be due to a manufacturing defect. No injuries occurred, but the failure posed a safety risk while in traffic. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2018 Hyundai Tucson. The contact stated while driving 70 MPH and depressing accelerator pedal, the vehicle started to decelerate. The contact pulled over to the right side of the road and turned off the vehicle. The contact waited for two minutes and attempted to restart the vehicle; however, the vehicle failed to respond as needed. The brake warning light was illuminated. The vehicle was towed to an independent mechanic where it was diagnosed with a misfire in cylinders #1 and #2. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The contact related the failure to NHTSA Campaign Number: 20V543000 (SERVICE BRAKES, HYDRAULIC); however, the VIN was not included. The manufacturer was notified not notified of the failure. The failure mileage was 177,000.