Kia Telluride hesitation problems

Filed Oct 16, 2026 · Engine · GA

the federal safety agency Vehicle Safety Complaint – 2021 Kia Telluride I am the original owner of a 2021 Kia Telluride with approximately 78,000 miles. My vehicle has experienced recurring mechanical and drivability concerns, including an intermittent check-engine light, a previously reported camshaft-related diagnostic trouble code, and hesitation during acceleration. Of particular concern, there have been instances when I have pressed the accelerator pedal and the vehicle has hesitated before responding. This delayed acceleration creates a potential safety concern, particularly when entering traffic, merging, or navigating intersections where predictable engine response is essential. Additionally, the vehicle has exhibited rough operation while reversing and unusually harsh engine behavior when the automatic engine stop-start system engages. Despite multiple visits to a Kia-authorized dealership, including a monitored 1,000-mile oil consumption test, these concerns remain unresolved. The dealership advised that the vehicle passed the oil consumption test but subsequently recommended a dynamic engine cleaning procedure. I was informed that the technician was approximately 85% confident this procedure would resolve the issue. However, no definitive explanation of the underlying mechanical problem was provided. I have requested written documentation of the diagnostic findings and the basis for the recommended procedure. I have also opened a formal case with Kia America Consumer Affairs regarding these unresolved concerns. I am submitting this complaint because I am concerned that the recurring acceleration hesitation and related engine symptoms may indicate a safety-related defect that has not been adequately identified or resolved. I respectfully request that the federal safety agency document these concerns and evaluate whether similar complaints involving 2021 Kia Telluride vehicles indicate a broader safety issue.

Filed Sep 11, 2026 · Engine · 109,000 miles · MS

The contact owns a 2020 Kia Telluride. The contact stated that while driving approximately 15 MPH, the vehicle hesitated to maintain automotive power. The check engine warning light was illuminated. The vehicle was previously repaired at a local dealer for an unknown recall associated with an engine oil leak. The vehicle was towed back to the same local dealer where it was diagnosed and an engine flush was suggested, and the contact was informed that six fuel injectors needed to be replaced as a possible repair. The manufacturer was made aware of the failure, and a case was filed. The approximate failure mileage was 109,000.

Filed Jun 10, 2026 · Steering, Transmission · IL

The vehicle experiences a recurring mechanical failure where the electronic AWD coupling/rear axle locks up and binds when accelerating through turns. This creates an immediate safety hazard by altering steering dynamics and causing vehicle hesitation or severe wheel hop in intersection turns. A certified Kia dealership has already fully replaced the entire factory AWD Coupling assembly twice: first under the original warranty on July 16, 2024 at 48,054 miles, and again under warranty on May 2, 2025 at 59,350 miles. Following a preliminary check-in for the same symptom on April 9, 2025, this identical component failure has now recurred for a third time at approximately 77,000 miles.

Filed May 22, 2026 · Transmission · NY

I own a 2020 Kia Telluride currently with approximately 91409 miles. The vehicle has a repeatable transmission issue during acceleration, most noticeable around 40 mph when the transmission shifts. The vehicle shudders/hesitates/jerks and does not accelerate smoothly. This creates a safety concern because the hesitation occurs during normal acceleration and could affect merging, passing, or maintaining speed in traffic. I brought the vehicle to Vision Kia of East Rochester, 201 East Linden Ave, East Rochester, NY 14445 on 2/4/26 at approximately 88067 miles. The Kia service manager/technician duplicated the concern during inspection/road test and stated that the issue is related to the torque converter damper clutch. However, I was told the dealer would not repair the vehicle unless a warning light/check-engine light comes on. No warning light is currently illuminated. I am reporting this because the transmission defect has been observed by the dealer while the vehicle is still under warranty, but no repair has been authorized. I am concerned that the condition may worsen and could cause delayed acceleration or unsafe drivability.

Filed May 5, 2026 · Engine · NY

Transmition- I started bringing it into the dealer around 80,000 miles because it was slipping and bucking (gears). Allegedly, they could provide warrenty coverage but could duplicate the problem. It is doing it more frequently and hesitates (drastically) which can cause an accident from behind. Yes, it was reproduced but as I stated, I was told, "They couldn't do 'anything about it'". It has been inspected multiple times at Kia prior to 100K warrenty At one point, my check engine light kept coming on, then it just went off. There seems to be some major faulty component with this make, model and year. I have read many very similiar complaints, online and there seems to be chronilogical issues/problems that arise at certain miles. Everything I have read, it the exact same situation I have been having which is just geting worse by the day. However, I was blatently informed by Kia, "They would not replace the transmition unless it went." I think that is totally ridiculous, you wait until it goes and can cause an accident before you will fix/replace the part. I also read and heard from multiple mechanics that it could be the "failed torque converter" which was never mentioned from the dealer. I have also had issues with the CV axle and oil plastic housing.

Filed Dec 30, 2025 · Transmission · IA

Summary of Defect and Repair History My 2024 Kia Telluride EX AWD has experienced repeated and ongoing transmission failures. The failures include the vehicle becoming stuck in 5th gear, unsafe acceleration characteristics, and loss of normal drivability. Two transmissions have been replaced, and the same defect continues to occur. The vehicle remains at the dealership today with the defect unresolved. Repair Attempts and Days Out of Service 1 Transmission replacement 30 days Returned but defect recurred. A warning lamp (check engine) did illumiinate after the first transmission failure, however did not for the second nor third failure. Failure was confirmed by Kia dealership. 2 Transmission replacement 47 days. Returned but defect recurred. Failure was confirmed by Kia dealership. 3 Current repair attempt 24+ Not repaired. The vehicle has incurred three repair attempts and 101+ days out of service for the same defect. Failure was confirmed by Kia dealership. Substantial Impairment: Use, Value, and Safety 1. Impairment of Use  The vehicle has been in the dealership’s possession for more than three months in 2025, making it unavailable for normal use  Driving attempts prior to service demonstrated lack of shifting, hesitation, clunking, and unsafe behavior  The defect continues to occur despite repeated major repairs 2. Impairment of Value  A newer model vehicle requiring two full transmission replacement in one year and still malfunctioning has demonstrably reduced value  Transmission replacement history is discoverable and materially reduces market value 3. Impairment of Safety  Transmission failure compromises safe acceleration, speed regulation, and predictable power delivery  The failures occurred at low mileage, indicating a systemic nonconformity rather than normal wear, presenting an ongoing risk As a engineer with 20+ years of experience, I do believe the root cause is a wiring issue (e.g. shorted wiring harness), not a transmission failure.

Filed Dec 3, 2025 · Body, Electrical · PA

My 2022 Kia Telluride is experiencing several serious safety-related defects. The backup camera does not work, the second-row bucket seats fold up on their own while driving, and the electronic parking brake becomes stuck on and will not disengage. The transmission hesitates and shifts harshly, creating a risk during acceleration and lane changes. The engine is consuming oil between changes. The heating and air conditioning stop working when the vehicle is idling at stoplights, and electrical components including the front phone charger and heated passenger seat have failed. The exterior window trim is deteriorating. These issues are ongoing and have not been resolved by Kia. Several of these failures match known defect and recall categories. These create a significant crash and safety risk for my family. I am requesting investigation and manufacturer action.

Filed Oct 8, 2025 · Engine, Transmission · MD

Right at 100k miles both our engine began burning oil at an extremely high rate with no clear resolution for the issue. We are adding 1-2 quarts ever week. Simultaneously, we received transmission solenoid codes from a check engine light. The sealed factory transmission had burn looking transmission fluid and after replacement the light continue to show and now the transmission is slipping and hesitating and we are being told it needs replaced.

Filed Sep 22, 2025 · Acceleration, Transmission · MN

I had the AWD coupler replaced at 66000 under warranty due to a TSB and hesitation when turning at slow speeds. I'm at 110000 and the AWD coupler is failing again and needs replacement but Kia warranty won't cover it again. Very frustrated

Filed Sep 14, 2025 · Engine, Transmission · MN

For the past year to year ½ I have brought my car in for concerns with idle, hesitation when accelerating, stalling out, etc. This has put me in compromised situations when in traffic, at stop lights and when trying to accelerate to get on the highway. I was told it was fine, until it was not. Now my engine needs to be replaced. What I discovered in my car was their worksheet on issues that they never shared with me. Identified issues on this report: Fault Code 6, PO300400 - history, cylinder misfire, PO30500 - history, cylinder misfire PO34100 When going back for a 'simple' 1000 mile oil check, I was told there was not enough oil loss to identify concern. When I checked my own oil after another 1000 miles, KIA then pursued. In researching, there is a history of these engine problems and engines needing to be replaced with KIA. This is unacceptable and has compromised safety and any value I hoped to have with my car.