Hyundai Tucson jerking problems

Filed Oct 1, 2026 · Fuel system · MA

2023 Hyundai Tucson Limited, 2.5L GDI, Alabama-built (VIN 5NMXXXXXXXXXXXXXX), built [XXX]. On [XXX], at about 37,550 miles, the check engine light came on flashing and the engine ran rough while I was traveling in Canada. My scan tool showed P0300, P0302 and P0304 (misfires on cylinders 2 and 4). On July 6, 2026, Experience Hyundai in Charlottetown, PE (service order 92XXX) replaced one ignition coil under warranty. No fuel injector leak test was performed. The misfires returned. On [XXX], at 39,409 miles, my scan showed P0302 active and P0304 pending. The car also had extended cranking after sitting and the check engine light was on. I was told I could keep driving the car unless it started to jerk or engine light started to flash, then immediately stop driving it and have it towed. On September 25, 2026, the car was towed to McGovern Hyundai Route 2, Leominster, MA (invoice 148XXX). The dealer found all 4 fuel injectors leaking and replaced them under warranty with injector service kit 35399-2S133QQH. My vehicle is outside the production range of Hyundai TSBs 23-FL-002H-1 and 26-FL-001H, which cover this injector failure only for Alabama-built Tucsons produced through July 11, 2022. Yet it failed in the same way. I am concerned the defect extends beyond the bulletin dates and that a sudden misfire could cause loss of power in traffic. There is no recall for this condition. The dealer found all 4 fuel injectors leaking, even though only cylinders 2 and 4 had set misfire codes and replaced them under warranty with injector service kit 35399-2S133QQH. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Sep 30, 2026 · Driver assistance · 11,000 miles · NY

The contact leases a 2025 Hyundai Tucson. The contact stated that while driving 72 MPH, the adaptive cruise control deactivated, and the vehicle decelerated unintendedly to 60 MPH. The messages "Front Assist Collision Warning" and "Front Assist Collision Limited" were displayed. The contact stated that while reversing, the vehicle stopped abruptly, jerking the driver back and forth. Additionally, the Rear Cross-Traffic Alert system was intermittently inoperable. The vehicle was taken to the dealer, and the front camera software was updated under the federal safety agency Campaign Number: 26V316000 (Forward Collision Avoidance); however, the failure recurred. The vehicle was taken back to the dealer, and the front camera underneath the bumper was found slanted; the camera was adjusted; however, the failure persisted. The contact stated that there was an abnormal humming sound coming from the radio. The manufacturer was notified of the failures several times and referred the contact back to the dealer for assistance. The failure mileage was approximately 11,000.

Filed Jul 23, 2026 · Brakes, Driver assistance · CA

First time it happened I was driving on the freeway from [XXX] to [XXX]. The car did an instant jerk stop ON THE FREEWAY!! I thought my granddaughter touched something but then it did it again when I was driving by myself. So I took the car in for the recall that came out for this issue and the day after that as I parked into an In-N-Out parking space my collision light came on warning me that there was a collision ahead. I was in a parking space so in that moment, I kind of let it go. Has done it a few times in local traffic. Fast forward to yesterday XXX It was way more serious. I was doing a U-turn and my car jerked. Stop the car behind me almost hit me and I was stopped in oncoming traffic. It released and I got to move so I didn’t wreck, but it scared me. I was very shaken. This is now happened a few times and I have already done the recall at this point I feel very unsafe uncomfortable driving the car and feel like I need a refund full refund. I am now afraid to drive it. It’s gonna kill one of us. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jul 19, 2026 · Acceleration · NY

This has happened twice now. When going at a low speed, once in traffic, once while performing a U-turn, while braking, the car is trying to accelerate. I have to practically stand on the brake pedal to avoid the car lurching forward. I saw no warning lights on the dashboard. I haven't yet brought the vehicle to a dealer or service center, but it will be.

Filed Jul 18, 2026 · Engine · NY

Tried passing someone on the thruway, as I was about to the car jerked a bit then started decelerating. The check engine light started flashing and so did the oil light. Read the code as cylinder 3 misfire and a knock sensor. Changed the spark plugs and coil packs then checked the oil and saw there was no oil in the engine. Was told by my mechanic it’s a common problem with these Hyundai engines, it seems the rings are getting fried in the engine and that’s why it consumes oil so quickly.

Filed Jul 15, 2026 · Brakes · FL

On XXX, while approaching a stop sign, the vehicle did not engage the brakes as expected. I had to press the brake pedal multiple times, and the vehicle jerked several times before it came to a stop. Given that a brake failure of this kind poses an immediate risk to my safety and the safety of others on the road, I had the vehicle towed in for service right away. I took the vehicle to Courtesy Hyundai of Tampa (3810 W Hillsborough Ave, Tampa, FL 33614) on Monday, XXX (Repair Order #XXX). Service Advisor Dominick DeLeva documented the complaint and had the vehicle test driven. The dealership's notes state that the issue could not be duplicated, no fault codes were present, and the brake fluid level was correct. A multi-point inspection was also completed. The vehicle was returned to me on July 14, 2026, with no repairs made and no explanation for the braking irregularity I experienced. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jun 12, 2026 · Acceleration, Engine · NC

The vehicle severely shudders, jerks, and hesitates from a stop and while making a turn, during both acceleration and deceleration, making it entirely unsafe to drive. The vehicle has been completely un-driveable for the past 6 days. The check engine light illuminated, and on 4/9/26, the dealer documented a failed transmission judder test and kept the car, issuing a loaner. A temporary software patch failed after two weeks. Upon return, the dealer reported they were unable to recreate the problem, recommended returning when the vehicle demonstrates the problem more frequently, and refused to mechanically repair the dual-clutch transmission under my active original-owner 100,000-mile powertrain warranty, basically instructing me to continue to drive a seriously un-safe vehicle. Most recently, a yellow dashboard warning light illuminated, and the vehicle entered a dangerous 'limp mode,' severely restricting power and struggling to move before the light cleared after cooling down. The vehicle is completely un-driveable and parked.

Filed May 4, 2026 · Brakes, Driver assistance · CA · 1 injury

3 times my car have braked while im driving causing my whole car to jerk 2 of the time i hit my head and my knuckle and finger got hurt and was bleeding I have pictures but they are not allowing me

Filed Apr 24, 2026 · TN

At a slow speed the car lurched, paused, in traffic. The engine light is on. It could be dangerous.

Filed Apr 6, 2026 · Brakes · 700 miles · IL

The contact owns a 2026 Hyundai Tucson. The contact stated that while driving at an undisclosed speed, the brakes independently activated. No warning lights were illuminated. The contact stated that the vehicle had stopped in the middle of traffic. The contact's minor children were inside the vehicle and seated in the rear seats. The contact stated that during the failure, the vehicle jerked forward abnormally. The vehicle was taken to the dealer; however, the failure was not duplicated. The manufacturer was not made aware of the failure. The failure mileage was approximately 700.