Kia Sorento shudder problems

Filed Oct 7, 2026 · Engine · 34,000 miles · OH

The contact owns a 2020 Kia Sorento. The contact stated that while driving, there was an abnormal banging sound coming from under the hood of the vehicle and the vehicle shuddered abnormally. The contact stated that the Forward Collision Avoidance warning light was temporarily illuminated. The vehicle was taken to a local dealer where it was diagnosed; however, the cause of the failure was not yet determined. The manufacturer was made aware of the failure. The failure mileage was approximately 34,000.

Filed Oct 7, 2026 · Transmission · 64,000 miles · TX

The contact owns a 2021 Kia Sorento. While driving approximately 40-50 MPH in fourth gear, the vehicle shuddered and decelerated to 30 MPH, then lost drive power. Additionally, the clutch made a flapping sound while in 1st, 2nd, 6th, and 8th gear. The contact stated that the vehicle rolled while the transmission was shifted in drive(D). The contact pulled over, turned off, and then restarted the vehicle. The failure had occurred approximately five times. The contact associated the failure with the federal safety agency Campaign Number: 22V760000 (Power Train); however, the VIN was not included in the recall. The manufacturer was notified of the failure by phone. The failure mileage was approximately 64,000.

Filed Sep 1, 2026 · Engine · 100,000 miles · FL

The contact owns a 2017 Kia Sorento. The contact stated that the vehicle experienced excessive oil consumption. The vehicle was inspected several times; however, no oil leaks were found. The contact stated that while driving 30 MPH, the vehicle shuddered, and the check engine warning light illuminated and flashed on the instrument panel. The vehicle was taken to an independent mechanic, where it was determined that there was a hole in a valve and a piston was fractured. The vehicle was then towed to a dealer, where the failure was confirmed. The dealer determined that the engine needed to be replaced and the repair was not covered under warranty. The vehicle was not repaired due to the cost. The contact notified the manufacturer via telephone and was referred to the federal safety agency Hotline for assistance. The failure mileage was approximately 100,000.

Filed Jun 29, 2026 · Engine · 7,000 miles · LA

The contact owns a 2026 Kia Sorento. The contact stated that while driving 75 MPH, the check engine warning light started flashing and the vehicle entered LIMP Mode. The contact pulled over, turned off, and restarted the vehicle, and the vehicle operated as intended while driving to the residence. The contact stated that the following day, while driving 75 MPH with an 18-wheeler behind the vehicle, the vehicle hesitated, shuddered, and jerked. The check engine warning light was consistently illuminated, and the message "Engine Management System - Follow Up Check Required" was displayed. Additionally, the Mobile App displayed the message "Engine Issues" with DTC: P030100. The contact pulled over, turned off, and restarted the vehicle, but the failure persisted while driving to the dealer. The vehicle was taken to the dealer, where it was diagnosed with cylinder injector failure. The dealer replaced the cylinder injector; however, the failure recurred while driving 30 minutes later. The contact pulled over, turned off, and restarted the vehicle, but the failure persisted, and the vehicle made abnormal sounds. The vehicle failed to exceed 25-30 MPH and was taken to the dealer. The dealer had not yet provided the result of a diagnostic test. The manufacturer was contacted and informed that the latest diagnostic report submitted by the dealer on June 22, 2026, stated that the vehicle was diagnosed with a gasket failure. The vehicle was not repaired. The failure mileage was approximately 7,000.

Filed Jun 20, 2026 · Engine · CA

The engine failed and is now inoperable. The vehicle has been consuming excessive oil since I purchased it in 2022. I have all oil change records and top offs documented. In May 2026 the engine had a total failure, was making excessive noise, was shuddering and vibrating, blowing lots of smoke from the exhaust and then would not start. The check engine light came on. I towed it to Roseville Kia for diagnosis. Kia refused to honor the lifetime warranty under the class action lawsuit, claiming the engineer failure was due to a damaged exhaust valve. The did not complete the diagnosis. They did not follow the federal safety agency engine replacement flowchart past flowchart A because code p1326 was not present. However the flowchart specifies engine noise and failure to turn over qualify the technician to perform flowcharts B and C. Kia is refusing to complete the diagnosis and evaluate the rod bearings for damage, which would likely qualify the engine for replacement under warranty.

Filed May 28, 2026 · Acceleration, Brakes · CO

Vehicle exhibits repeated brake pulsation and vibration under normal braking conditions, affecting braking performance consistency. The issue began at approximately 10,000 miles and has progressively worsened. The vehicle currently has approximately 30,000 miles. The pulsation is felt through the steering wheel and brake pedal during moderate braking from highway speeds and occurs consistently across multiple driving conditions. The condition is significantly more pronounced when using the vehicle’s adaptive cruise control system. During normal operation, the adaptive cruise repeatedly applies the brakes automatically, and this consistently produces increased vibration and uneven braking response. This indicates the issue occurs during normal vehicle operation rather than abnormal use. The repeated pulsation creates inconsistent brake feel and may affect stopping performance, particularly during repeated or sustained braking events. This raises concern regarding braking reliability and stopping consistency, especially in traffic conditions where adaptive cruise control is actively managing following distance. The condition has steadily worsened over time and is present during routine driving. It is not limited to high-speed or heavy braking scenarios. A manufacturer Technical Service Bulletin (TSB CHA126V) exists for this vehicle model addressing front brake disc judder. The symptoms described in the bulletin match the condition experienced in this vehicle. Given the early onset, progressive nature of the issue, and the involvement of system-controlled braking (adaptive cruise), this condition appears to be related to component performance or design rather than normal wear. Kia response .. Dear [XXX] , Thank you for contacting Kia Customer Care. We do not see that bulletin related to this VIN, as such, any repairs recommended would be the responsibility of the vehicle’s owner. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Apr 30, 2026 · Engine · 1,500 miles · TX

The contact owns a 2016 Kia Sorento. The contact stated that while the vehicle was parked and running, the vehicle shuddered abnormally. The vehicle returned to normal operation after the contact added oil to the engine. The failure had occurred on several occasions. The vehicle was taken to an independent mechanic to be diagnosed; however, the independent mechanic informed the contact that the engine was operating as designed. No repairs were recommended by the mechanic. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 1,500.

Filed Mar 20, 2026 · Engine · TX

My 2017 Kia Sorento with approximately 175,000 miles experienced engine failure involving the engine and engine cooling system. The vehicle began showing symptoms including engine shudder, reduced acceleration, and a check engine light. These symptoms worsened and were diagnosed by a Kia dealership as internal engine damage, specifically a failure in cylinder 4. The dealership advised that the engine would require full replacement at an estimated cost of approximately $9,600. The failure creates a potential safety concern because the vehicle experiences loss of power during acceleration, which could increase the risk of an accident, especially when merging into traffic or driving at highway speeds. The issue was confirmed by an authorized Kia dealership, Community Kia, after performing diagnostic testing. The dealership completed multiple recall and service campaigns but determined that the engine was not eligible for replacement because a required diagnostic code associated with the knock sensor detection system did not appear. To my knowledge, there is no clear documentation confirming that the knock sensor detection system update was installed on the vehicle prior to the engine failure. If this system was not installed, the diagnostic code required to qualify for engine replacement may not have had the opportunity to trigger. Prior to the failure, the vehicle displayed warning symptoms including a check engine light, engine vibration, and loss of power. These symptoms appeared before the dealership inspection and diagnosis. This complaint is being submitted due to concern that the engine failure occurred despite known issues associated with this engine type, and that the failure creates a potential safety risk due to sudden loss of power while driving.

Filed Mar 20, 2026 · Engine · 120,000 miles · MD

The contact owns a 2019 Kia Sorento. The contact stated that upon taking the vehicle to an independent mechanic for an alignment, the contact was informed that an oil leak was found. The vehicle was taken to the dealer, where the oil gasket was replaced; however, the oil leak progressively worsened. The contact stated that while driving, the vehicle shuddered and stalled. The contact was able to pull over to the side of the road. The transmission and the low oil pressure warning lights were illuminated. The vehicle was towed to an independent mechanic, where it was diagnosed with cylinder #3 failure. The mechanic determined that the engine long block needed to be replaced. The vehicle was not repaired due to the cost. The vehicle was towed to the residence of a friend. The manufacturer was contacted and referred the contact to the dealer for assistance. The failure mileage was approximately 120,000.

Filed Oct 2, 2025 · Electrical, Engine · 6,099 miles · GA

The contact owns a 2021 Kia Sorento. The contact stated that while driving approximately 10 MPH over a speed bump, the vehicle shut off. The contact was unable to pull over to the side of the road. The vehicle failed to restart and was towed to the dealer, where it was diagnosed with a bad connection at the fuel pump fuse box. The dealer performed a minor wiring repair. The contact stated that while driving 60-80 MPH, the vehicle failed to accelerate as intended, and the vehicle shuddered and then jolted. The vehicle was taken to Calavan Kia [XXX] ), but the failure could not be duplicated; however, the coils were replaced. The contact stated that upon starting the vehicle, several unknown warning lights were illuminated, and the vehicle was inoperable. The contact stated that upon restarting the vehicle, the warning lights were turned off, and the vehicle operated as needed. The contact also stated that the vehicle was making an abnormal rattling and ticking sound while driving. The vehicle was taken back to the second dealer, where the failure could not be duplicated; however, the failure persisted. The vehicle was taken to a third dealer, Ed Voyles Kia [XXX] ), where the failure could not be replicated. Additionally, the contact stated that A/C system was inoperable. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure, and a case was opened. The failure mileage was approximately 6,099. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)