2021 Kia Telluride

After receiving a Kia‑issued transmission control module (TCM) software update, my 2021 Kia Telluride experienced a severe and dangerous transmission malfunction while descending a high mountain pass in Colorado. When I attempted to downshift for engine braking, 3rd gear completely disengaged, causing the vehicle to accelerate uncontrollably downhill. None of the lower gears would engage or hold as they had prior to the software update. This forced me to slam on the brakes and ride them continuously down the mountain, creating a serious loss‑of‑control hazard and risk of brake failure. Downshifting is essential for safe descent on steep grades, and the vehicle’s inability to do so created an extremely dangerous situation. The issue was duplicated by the Kia dealership technicians, and Kia field engineers have confirmed awareness of the problem. Despite this, Kia Corporate refuses to authorize transmission replacement or reversal of the software update, leaving the vehicle in an unsafe condition. This is a critical safety defect involving gear disengagement, loss of engine braking, unintended acceleration, and brake‑dependent descent control. The vehicle is unsafe to operate on mountain roads, and Kia has declined to perform the necessary repairs.

Constant failure of the rear self leveling shocks there is tsb on the issue but manufacturer will only replace first set of shocks which causes the owner to pay every 20k plus miles for new rear shocks

I had recall 26V430000 service performed at: Regal Kia [XXX] After the work was performed, both front power seats were inoperative. I was never informed by the service rep that the power seats were inoperative. I received a text of the multi-point inspection which included a quote for $546.87 for both front seat power switches. Never had the service rep discuss this with me while I was at Regal Kia, but reviewing my invoice at home I saw where the technician stated the power seats were inoperative after performing the recall SC374 service. The technician stated after following the applicable TSB for the recall they recommend replacement of both power seat switches at a cost of of $546.87 which Regal Kia wanted me to pay. It appears the TSB maybe doesn’t resolve the issue or perhaps a technician error during installation. I contacted Kia Customer Care ([XXX]) to see if I could have a local repair shop review the repair. They said only a dealership could do recall repairs. They recommended the next closest dealership in [XXX], but it is a one hour drive for me. They assigned case XXX and said they would contact Regal Kia and someone would call me back. I received no return call. I share the vehicle with my wife and she is now unable to adjust the driver seat to a comfortable and safe position. Why I was never informed prior to leaving Regal Kia is unacceptable as seat position is very important while driving. As both fronts seats were operative prior to the recall work, I don’t believe I should be responsible for the cost of new switches. As my power seats no longer work, I do not believe Regal Kia resolved the recall 26V430000 issue without cost to me. I would like to formally file a complaint against Regal KIA for not correcting the recall issue without cost to vehicle owner. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Vehicle sunroof came off track on July 22, 2025. Possibly by the fault of the customer. Customer sought repair. Authorized Kia dealer recommended complete replacement of sunroof. On August 29, 2025, Customer paid authorized Kia dealer to replace sunroof with official Kia parts. On June 25, 2026, sunroof broke again through no fault of the customer. Wind deflector arms broke, got stuck open, and caused the glass to go off-track, rendering the sunroof inoperable and completely ruined. Took the vehicle to the same Kia dealer that repaired the sunroof originally. Even though the vehicle was within the 12 month warranty, it was over the 12,000 mile warranty, and Kia would not fix the sunroof. We opened a complaint with Kia Customer Care, and they did not resolve the issue for two months. Our claim was denied. We cannot afford to fix the sunroof again after 10 months, and if we do, we are concerned about it malfunctioning again. I am concerned that the sunroof glass could come dislodged while driving and strike another vehicle or cause a collision.

I believe my engine to be defective and Commonwealth Kia to be neglegent in finding the defect dispite having been tasked to repair an issue while my car was under warranty. I first mentioned the problem on the XXX visit at $85,000 miles. Asked them to check the filters. Mentioned again at the XXX visit at 92,000 there is not documentation of the complaints on either of these visits but it does say ont eh XXX visit that the car "STILL LACKS POWER..." indicating that there have been previous discussions about the issue. The car was at 99,000+ miles at the XXX visit (still under warranty) I returned on XXX and XXX and was told on 1/20 that they FINALLY found the problem and that I would have to pay to have the entire engine replaced. I have since done some research and the issues that I am having are very similar to the Class Action Suit against Kia and the THETA II engine. [XXX] I have also seen on multilple owners boards on social media and in reports found on the internet that 2020-2023 Kia Tellurides have been having the same issues as THETA II engine models. [XXX] I find it difficult to believe Commonwealth Kia Service have not heard similar complaints nor have the ability to diagnose the problem on the first or second mention of the problem (which was while the car was still under warranty) I have called Kia USA who can not help me due to the fact that I am the second owner. The car was sold to me as "Certified Pre-Owned" by Kia. I believe Commonwealth Kia willfully misdiagnosed my problems so as to push the replacement cost to me and not the warranty INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

I purchased this 2021 Kia Telluride new and have had it routinely serviced and maintained by authorized Kia dealerships. At approximately 60,000–80,000 miles, the engine began consuming excessive oil. I reported the condition to the Kia dealer at approximately 80,000 miles, while the vehicle was still within Kia's 10-year/100,000-mile powertrain warranty. The dealer initially recommended a tune-up, but the oil consumption continued. During a later visit, the dealer identified an issue involving the OEM oil-filter housing and replaced the affected component. Despite this repair and continued maintenance, oil consumption progressively worsened. The vehicle now has approximately 160,000 miles and requires approximately one pint of oil every 2–3 weeks. The current diagnosis indicates potential internal engine damage, including cylinder-wall scoring that may allow oil to bypass the piston rings and burn in the combustion chambers. I have been advised the engine may require replacement at an estimated cost of approximately $13,000. My primary concern is that this condition began and was reported to Kia while the vehicle was still under the powertrain warranty, but the repairs did not correct it. Continued excessive oil consumption and internal engine damage create a safety concern because they could result in low oil pressure, engine seizure, stalling, or sudden loss of propulsion while driving. The vehicle is available for inspection, and its maintenance history, prior complaints, dealer repairs, and current condition are documented through Kia dealership service records.

My 2021 Kia Telluride has suffered two consecutive component failures of the rear suspension's self-leveling shock absorbers. This component is the exact subject of Kia's August 15, 2024 Extended Warranty Program (WTY040), which acknowledges a widespread engineering defect causing premature rear shock failures. The factory-installed original shock failed previously. The official Kia genuine replacement part (redesigned by Kia to permanently address the original defect) has now failed prematurely under the exact same mechanical conditions. The failed replacement component bears a manufacturing date stamp of 11/2023. Kia America Corporate is utilizing an administrative loophole regarding the component's manufacturing date code to deny safety coverage, actively refusing to honor or remedy the failure of their own redesigned replacement part. The local Kia dealership service manager inspected the vehicle and formally endorsed 100% replacement coverage due to this premature safety failure, but Kia Corporate has completely stalled the repair (I have had a formal 100% goodwill coverage request submitted since 7/21/26 without resolution), leaving a known vehicle stability defect unaddressed on a public roadway.

Sunroof broke when trying to open it. Now it’s in the open, venting, position unable to close. Dealership can’t look at it for a week so I’m risking water damage. Vehicle only has 31,000 miles on it and is just past the 5 yr warranty of course

Was low on oil and check oil light don't go on have to put oil very 2 week because it get low and I don't have no oil leak at all I found out because the motor start shaking and making noise tow it home and mechanical came to check it out and didn't have oil he say I was lurking I was not in the highway because it could lock the mortar and cause a accident

The sunroof is stuck open and is loose on the tracks, if even on the tracks at all. Very dangerous, as it could fly off while I am driving. This is a common problem with the Telluride, and I believe it should be recalled.

In August 2025, my Kia dealership serviced my 2021 Kia Telluride and billed me for 7 quarts of oil as part of the repair. Approximately four months later, in December 2025, the vehicle developed severe engine problems and became inoperable. The dealership diagnosed the failure as a collapsed timing tensioner and stated the engine required complete replacement. Kia Techline agreed with that diagnosis and used it as the basis for recommending a new engine. Despite acknowledging that engine replacement was necessary, Kia denied warranty coverage, leaving me responsible for an estimated $11,000 repair. I then obtained a second opinion from an independent, reputable repair facility. After inspecting the vehicle, the shop concluded the engine failure was not caused by a timing system failure. Instead, they found the engine contained only about one quart of oil and determined the damage resulted from oil starvation. They further stated that, in their professional opinion, the dealership had misdiagnosed the vehicle and that the low oil level was consistent with the possibility that the dealership failed to add the oil for which I was charged during the August 2025 service. What is especially concerning is that the dealership never documented or informed me that the engine was critically low on oil. Because the timing components rely on engine oil for lubrication, I believe it would have been impossible to properly inspect and diagnose a timing tensioner failure without recognizing and documenting the severely low oil level. Based on the independent inspection and the dealership's failure to identify or disclose the lack of oil, I believe the dealership either failed to perform the service as billed or failed to correctly diagnose the true cause of the engine failure. I am concerned that this incorrect diagnosis diverted attention from possible negligent workmanship during the prior service and led to an unnecessary recommendation for an $11,000 engine replacement.

Opened the sunroof wind deflector broke tracks broke will not close

While driving this vehicle in route to Philadelphia airport JFK, i experienced a total malfunction of the instrument cluster. All of the warning lights continued to go on and off and were illuminating on the cluster non stop along with a audible chiming, all of wich lasted the 3 hour trip. The car is available anytime. Warning lights/alarms were not only distracting but affected the spedometer which would shut down totally. No dealer or service center has been contacted yet.

My 2021 Kia Telluride (60,500 miles) experienced failure of the panoramic sunroof wind deflector arm/mechanism. The broken component is available for inspection. The failure prevents the sunroof system from operating properly and may result in improper sealing, water intrusion, or further mechanical damage. The issue was confirmed by a Kia dealership. Kia has issued Technical Service Bulletin BOD 319 addressing Telluride sunroof wind deflector arm and mechanism failures. Despite this bulletin, I was quoted approximately $4,000+ for replacement of the entire sunroof assembly instead of the component repair procedure described by Kia. There were no warning lights or messages before failure. The issue occurred during normal vehicle use. I believe this known component failure presents a safety and reliability concern for Telluride owners.

CATASTROPHIC FAILURE TIMELINE (13 DAYS) XXX: Delivery taken at 105,439 miles.XXX: My boyfriend noticed a cloud of smoke from exhaust as I pressed the accelerator pedal to leave the parking lot. I didn't notice because it was almost dark outside when leaving. He didn't notice again so he didn't stop me and told me when we got home. XXX (Day 12): Check Engine Light (CEL) on. Dipstick found dry. 2 quarts of oil purchased and added. Which brought the level right above the L line. Sent texts to both salesmen (Freedom and Driveway). Went to work in [XXX]. XXX (Day 13): Got home with Odometer: 106,974. Plugged Code reader into the vehicle and got Code P0597 logged at 1:04 AM. Tried both salesmen again through texts, email and or call. Have yet to get a reply from either. XXX posted review updates on both of my previous posted reviews for Freedom and Driveway. Received my first response from the Driveway review team only. XXX rear brake pads had been cutting into rotors a few days prior. I had to purchase a tool and pads to replace. XXX Documented loss of an additional 4 quarts of oil across 4 dates. XXX subscribed to Kia connect and the app also detected issue fault code P0597. And at a later date the app detected a 2nd fault code P0598 which went away a couple days later. May 14th finally got a hold of Justin Grable (GM Freedom) to discuss options. XXX trade-in is only option being given to me. DOCUMENTED DEFECTS & ROOT CAUSE Code P0597 (Thermostat Heater Control/Open): An electrical/mechanical failure that caused internal engine "hot spots." Engine Failure: Pre-existing piston ring tension loss causing catastrophic oil consumption (1 quart/wk). Consequential Damage: Chronic oil burning will poison the Catalytic Converters and foul all Oxygen (O2) Sensors. As of XXX my vehicle is now consuming 1 qt/day. ac is not working and now giving me 6 codes for engine light. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The Telluride was parked in my driveway on a hill. When the car was started by pushing the ignition all of the lights on the dash panel started flashing. The car was shifted into reverse to back down the driveway however the brakes didn’t work. We captured this on video via CCTV footage. You can see the vehicle reversing and the brake lights are on as the pedal was pushed but not responding. As the vehicle went on to a lesser slope it slowed some but was about to crash into my neighbors home when the parking brake button was pushed and the vehicle came to a stop. The evening prior when starting the car on a flat surface the lights all flashed upon starting but the vehicle had operated normally.

The contact owns a 2021 Kia Telluride. The contact received notification of NHTSA Campaign Number: 26V430000 (Seats). The contact was concerned about a vehicle fire. The local dealer was contacted, but the vehicle was not diagnosed or repaired due to parts being on back order. The manufacturer was not contacted. The contact had not experienced a failure.

Windshield wipers pause during use in intermittent and slow/low setting. Was initially told that the wipers were old and needed replacing and this would fix the issue. Wipers were replaced and still having same issue.

See attached document for complaint.

The moon roof has came off track