The contact owns a 2016 Hyundai Tucson. The contact stated that the check engine warning light was illuminated, and there was a ticking sound coming from the front of the vehicle. The vehicle was taken to Auto Zone, where a mechanic diagnosed the vehicle with a knock sensor failure. The knock sensor was replaced. The mechanic informed the contact that the vehicle was included in Manufacturer Campaign: CS966 for the transmission control module (TCM). The vehicle was taken to the dealer, who confirmed that the vehicle was included and the software update was performed. After the vehicle was repaired, the check engine warning light was no longer illuminated; however, approximately 30 minutes later, the vehicle failed to exceed 35 MPH, and the check engine warning light started flashing. The vehicle was returned to the dealer, and the contact was informed that the software update caused the vehicle to enter LIMP Mode to protect the engine. The dealer informed the contact to drive the vehicle for 30 days or a total of 500 -1000 miles, and if the vehicle continued to enter LIMP Mode or failed to operate as needed, to return the vehicle for the engine to be replaced. There were no additional repairs performed. The manufacturer was not informed of the failure. The failure mileage was approximately 125,000.

- Cleveland, OH, USA

Car died/lost power while driving in traffic 11/28/25. Good Samaritan was kind enough to push me off the road out of traffic. Car was towed to Hyundai dealer that day, then 12/1 told engine failure, required engine replacement. Class action lawsuit settlement for engine replacement, but denied by Hyundai because of "neglect", since I am not able to locate all of the service records that they request. Known faulty rotating assembly, and Hyundai has implemented concerted practice of denying warranty coverage for failed engine. Now having to pay almost $8K to replace with new engine, but concern that new engine will have same issue. (multiple posts about this). There was high potential for significant traffic collision, injury due to sudden, catastrophic engine failure. Traumatic experience.

- Los Angeles, CA, USA

While driving on the highway at normal speed, the vehicle suddenly lost power and shut off without warning. There were no warning lights or messages prior to the loss of power. I was able to safely pull over, but the engine would not restart at that time and the vehicle required towing. The sudden engine shutdown occurred in active traffic and created a safety risk due to loss of propulsion. The vehicle later restarted, but I brought it to an authorized Hyundai dealership for inspection. The dealership diagnosed internal engine damage, including piston ring failure and cylinder wall scoring, and advised that the engine would need to be replaced. Since the incident, the vehicle has shown intermittent oil pressure warning lights and reduced performance. The issue has been confirmed by a dealer inspection. The vehicle is currently not considered reliable or safe for regular driving.

- Mankato, MN, USA

My Tucson has been using an absurd amount of oil for the past 30,000 plus miles i had it in the shop for repairs for the exhaust/ turbo leaking due to broken stud bolt that finally was covered under warranty. But did nothing for the burning of oil. No oil leaks. It used a quart for every 500 miles. Now no warranty left i have a cylinder #1 misfire and have replaced sparkplug and will not come out of limp mode. Within a mile of driving the plug is oil fouled and goes back into limp mode. Probably will get no help from Hyundai to rebuild/ replacement of the motor.

- Tuttle, OK, USA

Engine or transmission The vehicle has stalled randomly multiple times on the freeway, business roads and intersections, not accelerating and burning through oil Dealership says they cannot figure out or replicate the issue No check engine light or warning of any kind given

- Converse, TX, USA

The car will fail to accelerate when turning at a stop and starting at times. It-??s very dangerous b/c you can be at a complete stop on the highway and try to start going and the car will sputter out. There is no doubt that something is wrong with the transmission and has been for a year but didn-??t register until 12,000 miles later.the car only has 70,000 miles in it. I kept taking it to Hyundai to be looked at and they kept telling me it was just how the dual clutch transmission works. Now a year later they say it-??s registering as a problem but don-??t want to cover it under the warranty b/c I-??m a second owner. If I was the original owner, it would be covered. If you look at the history of this year and make, you can see there have been issues with this car. I am extremely upset they aren-??t willing to cover the cost. This is my [XXX] daughter-??s car and this has been extremely dangerous to drive. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Dallas, TX, USA

1. "Transmission or ECU" 2. There is a lag and sometimes almost stall when accelerating from a stop. I was turning into a lane from a stop sign and the car decided to not move for 3-4 seconds after pressing accelerator. If people had come around the blind corner when that happened I would have been T boned. 3. All four people living in my house...... and our mechanic. Yes 4.No, because were not paying for something that has had a recall. 5. We inherited this car from my grandmother and she knows nothing about cars so she never thought anything was wrong. Since the day we got it, it has been doing the same thing "DCT CONTROL LOGIC UPDATE & P0128 DTC LOGIC UPDATE (RECALL 149)" #17-01-023

- Rockville, MD, USA

i bought the car used, i took it in for diagnostics on my transmission. they claimed i needed a new one, not claiming i need a new clutch. my car-??s model and year match the DCT recall problems. but not the vin. when my car was in the heat or accelerating it had the same issues listed. i believe this is a manufacturing issue.

- Jefferson, GA, USA

1. December 2024: Hyundai dealership diagnosed my transmission as defective (unable to shift properly) and recommended a full replacement. Despite this, they assured me the vehicle was "safe to drive" without disclosing risks. - Unedited dealer text: "The tech said he doesn-??t think it will break down or leave you stranded, he just can-??t get it to shift correctly." - No warnings were given about prolonged use, highway driving, or potential failure. 2. Post-Repair Damage: After relying on Hyundai-??s advice, the transmission worsened, causing additional damage (e.g., radiator failure). 3. Recall Negligence: My VIN was wrongly excluded from Recall 16V-628 (transmission control issues), despite exhibiting identical symptoms. They didn't cover repairs, despite their technician confirming the defect. The safety impacts are as follows: - Sudden loss of power while driving (e.g., inability to accelerate or shift). - Increased crash risk due to erratic transmission behavior. - Hyundai-??s failure to warn put me and other drivers in danger. I am requesting: - Investigate why my VIN was excluded from Recall 16V-628. - Force Hyundai to reimburse repairs and extend recall coverage. - Require Hyundai to issue clear safety warnings after faulty repairs. Attached is the following: - The radiator repair invoice. - Proof of text from Hyundai. - Proof of my Vin being excluded from recall. - Quote for my transmission repair.

- Spokane, WA, USA

Misfire, excessive oil consumption, engine knocking, loss of power/acceleration, gas smell, excessive gas consumption

- Dover, DE, USA

I-??ve been having ongoing issues with my 2016 Hyundai Tucson where the car struggles to accelerate, especially after stopping at red lights or pulling out into traffic. Sometimes, when I press the gas pedal, the car either hesitates badly or doesn-??t move at all. A few times it-??s completely stalled while trying to make turns or cross intersections, which has been really scary and dangerous. I did some research and found there was a known recall for this exact problem related to the Transmission Control Module software and the dual-clutch transmission. The symptoms described in the recall match mine perfectly, but when I checked my VIN, my vehicle isn-??t included. I haven-??t taken it to the dealer yet because I-??m worried I-??ll have to pay out of pocket for something that I believe is part of a known manufacturer issue.

- Forney, TX, USA

The contact owns a 2016 Hyundai Tucson. The contact stated that while driving at undisclosed speeds, the transmission started slipping while accelerating. There were no warning lights illuminated. The contact stated that the failure was related to NHTSA Campaign Number: 16V628000 (Power Train, Electrical System). The contact called an independent mechanic who provided a printout of a recall. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 108,000.

- Bath, PA, USA

When accelerating, like taking off from a red light or through a turn, my car begins to shake like it-??s unable to change gears correctly, and sometimes leads to the car stalling in the middle of the street and intersection putting my in danger of being hit from other drivers. It-??s also happened that when I press the gas after being stopped at a light, my car RPM goes up but I don-??t move and then the car jolts forward quickly. This has been happening for years and when I take it to Hyundai they tell me -??that-??s just how the car runs-?? which seems incredibly unsafe.

- Westlake Village, CA, USA

I bought my 2016 Tuscon brand new. Ever since I bought the vehicle, I've complained to the dealer about the transmission slipping. They have told me that this issue is common but there is nothing they can do. Now it seems to be getting worse so I decided to look up the problem and found out a recall notice was issued for some 2016 Tuscons but mine wasn't included. My Tuscon has the exact same problem as described in the recall issued by Hyundai. I"ve almost been in accidents because you press on the gas to go and it hesitates, l. What can I do? My Vin number is [XXX]. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Green Bay, WI, USA

My backup, my reverse is not working after 30 minutes the car is running.

- Bronx, NY, USA

loss of power, transmission slipping. unable to get car to move creating hazard. happened 5 times. Diagnosed by dealer as systemic transmission component failure and known issue. many of the same complaints on internet, Code p1921

- Taylor Mill, KY, USA

The contact owns a 2016 Hyundai Tucson. The contact stated while driving approximately 40 MPH, the vehicle lost motive power. The contact depressed the accelerator pedal and the vehicle lunged forward. The contact stated no warning light was illuminated. Additionally, the contact stated that when the vehicle was stopped, after depressing the accelerator pedal, the vehicle hesitated and then lunged forward. The contact had taken the vehicle to a local dealer, where it was diagnosed and determined that the transmission needed to be replaced. The vehicle was not repaired. The manufacturer was informed of the failure. The contact researched online and related the failure to NHTSA Campaign Number: 16V628000 (Power Train, Electrical System); however, the VIN was not included. The failure mileage was approximately 140,000.

- Pauls Valley, OK, USA

Vehicle started to shake and lost acceleration. Gave engine Code P073F Unable to engage gear 1. Hyundai shows Recall Campaign for this issue but dealer refuses to acknowledge it, and says it needs new transmission. They state transmission damaged clutch rather than clutch damaged transmission.

- Modesto, CA, USA

The contact owns a 2016 Hyundai Tuscon. The contact stated that while driving at various speeds the vehicle would begin sputtering and the transmission would begin slipping. The transmission would also slip when attempting to accelerate after being parked or idle. There were no warning lights. While driving approximately 45 MPH the vehicle suddenly began going in reverse. The contact immediately placed the vehicle in park to turn off the vehicle. After restarting the vehicle the contact attempted to drive it but failed to accelerate. The vehicle was only able to be driven in reverse. The contact reversed into the nearest parking lot. The vehicle was towed to a certified mechanic where it was diagnosed that the transmission failed. The transmission needed to be replaced. The vehicle had not been repaired. The manufacturer was not made aware of the failure. The failure mileage was 90,000.

- Berlin, NJ, USA

The vehicle intermittently fails to accelerate without warning or notification. The throttle pedal goes to the floor without the engine stalling or rev'ing but also fails to propel the vehicle. This has occurred when crossing lanes of on-coming traffic placing the operator in an EXTREMELY DANGEROUS situation. In addition, the vehicle also intermittently fails to go in reverse. These issues are most prevailant in warmer summer temperatures. Neither of these issues directly triggered a MIL light. MIL lights did occur independent from the cited issues but would typically self clear. On one occasion I was able to get a scan of the vehicle with an active MIL that yielded a P1921 Gear 2 System Motor Thermal Damage. Shortly after the scan, the code cleared and MIL went off. The conditions were NOT able to be reproduced by the dealership. They were also not able to clearly diagnose what would cause the P1921 fault. Their recommendation was to replace the entire transmission. ALL of the issues experience closely align with a issues cited in a class action law suit despite the vehicle not having any open recalls or TSBs.

- Shelby Township, MI, USA