2026 Hyundai Palisade

We lease a 2026 Palisade with only 4k miles. Several weeks ago I was going through a toll plaza, car would not accelerate after slowing down, as if it was in neutral. All of a sudden it kicked into gear and car lunged forward. 10 min later at a traffic light car failed to accelerate after a complete stop. Press the accelerator sluggish response, then kicked back into gear. Very Scary. I pulled over and notified the dealer. Then set an appoint. Dealer did a diagnostic, found no issues, could not replicate problem on test drive . Everything was fine a few weeks. My son took the car. Had the same exact issue with vehicle not accelerating. Then kicked into gear really hard and vibrating. This was scary for him because he was in a parking lot. Luckily there was no accident as a result. However, this time an error code (check engine light) came on and the Hyundai app showed a DTC CODE- P001600 (powertrain / engine). Car was immediately taken to dealer on May 28th 2026. It is now Jun 11th. Still no time frame for fix. The THINK it a software issue and Hyundai is still "working" on a solution.

While driving on my 2026 Palisade Calligraphy over last 6 months I lost all throttle/ gas response to engine on 12 separate occasions.The 3rd incident nearly resulted in serious crash in 55mph traffic. Went to dealer next day on 11/15 ref# 41788829 service found no codes, reset system and recommended a flight recorder to help diagnose. Filed with NHTSA on 12/3 after next incident ref # 11702738. Requested flight recorder multiple times with dealer and Hyundai case manager and after multiple visits, diagnostic drives and component replacement on 1/20 and 2/23 the dead throttle continued. On 4/7 I was finally issued recorder and captured 3 incidents of the problem that could not exist within 2 days. Dealer acknowledged problem and says they can not fix without help from Hyundai engineers. Hyundai will not buy back and tell me to go back to dealer for resolution. Dealer claims to have submitted all relevant info to Hyundai but will not produce requested paperwork to me for most of visits (illegal? ). I have been assigned 3 separate case managers who try to assign new case #42539227 and separate it from initial ref # 41788829 while denying buyback with documentation they refuse to share. I am driving an unsafe and dangerous suv with 3 clearly documented Hyundai flight recorder incidents and acknowledged safety issue.

While driving we suddenly lost acceleration and the pedal all the way to the floor made no difference. It came back fairly quick, but this has happened several times. We contacted Hyundai Corporate Reference # XXXon 11/15/25 We then went to the local dealership Invoice number XXXwhere we were told they didn’t know the cause and couldn’t duplicate it. That was anlso on 11/15/25. Since then it happened a couple more times. I feel this is very dangerous. We lost all acceleration on the highway in traffic. Date we took the car in was November 15. It happened the third time Nov 14, 2025 It also happened again on December 1. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

I am a 77 year old senior and was driving my 2025 Hyundai Tucson Highbrid at approx. 70 MPH on the highway, then suddenly there was significant shuddering through the Tucson with noticeable loss of power. The Tucson dropped to 30 MPH. After that it would accelerate with significant shuddering. This would repeat several times while driving. In addition there were no Malfunctioning indicators, or warning lights. We were never so scared in our lives. This occurred on Thursday , October 2 nd.2025 at around 1:00 P. M. On highway 355 and 53 traveling Northbound.