2020 Kia Telluride Powertrain & Transmission Problems

My 2020 Kia Telluride EX experienced a sudden engine shutoff / loss of motive power while driving in traffic. The vehicle stopped in the roadway, would not immediately restart, and restarted later after sitting. This was not normal stop/start operation, the car shut down. No low-oil warning appeared before the event. I am also aware of multiple similar owner reports online describing high oil consumption, stalling, and lack of warning in 2020 Tellurides, but this complaint is based on my own direct experience and concern. It was scary and life threatening!

The check engine light is on and reading code P07104. The vehicle has been diagnosed and it was found the torque converter is slipping and the technician recommends replacing the transmission. The anti-freeze has been low over the past 30 days and must be leaking internally. I have had to add anti-freeze twice during that time.

I am the original owner of a 2020 Kia Telluride with 48,409 miles. My wife purchased it new. It has never been sold or transferred. It is fully covered under Kia's 10-year/100,000-mile Powertrain Warranty. What component failed and is it available for inspection? The engine is consuming excessive oil due to failed internal components—likely the piston rings. This has fouled the spark plugs and caused active misfires on cylinders 1,3,4,5. Codes: P0300, P0301, P0303, P0304, P0305. Kia acknowledges this defect in TSB ENG222, which defines consumption over 1 quart per 1,000 miles as abnormal. The failed components remain in the vehicle and are available for inspection. Has the problem been confirmed by a dealer? Yes. [Dealer Name] confirmed the misfire codes and excessive oil consumption. Despite being original owners with an active warranty, they refused to cover the repair. The advisor said they "only cover internal engine parts"—which is exactly what is broken. We were sent home with a flashing check engine light. Has it been inspected by manufacturer or others? No. Only the dealership. Kia Corporate has not inspected it. How was safety put at risk? A solid check engine light means active misfire and risk of sudden engine stall or seizure. Other Telluride owners report complete power loss on highways and intersections—no acceleration, no power steering, no power brakes. My wife and children drive this car. I fear for their safety every time they start the engine. Were there warning symptoms? Yes. Two weeks before the check engine light appeared, I noticed a slight shudder during acceleration that gradually worsened. The light came on solid, then began flashing within days. No oil light appeared. No other warnings. Kia advertised a 10-year/100,000-mile warranty. At 48,409 miles, they denied coverage for a known, documented defect. That is not a warranty. Not true. I request an investigation into the 2020 Telluride 3.8L engine. Thank you

My transmission failed at 95k miles and was available for inspection at a fee. My safety was at risk since my car was jerking on the highway and I had to quickly pull over while the car slowed down in a fast and high trafficked area. The problem has been an ongoing issue especially in 2020 models from social media and the dealership. The vehicle was inspected by the Kia dealership. The engine light did not come on until the car showed immediate signs of issues.

Oil filter housing assembly- Resulted in very low engine oil with no warning lights or engine lights potentially leading to engine damage. Yes the component was inspected and replaced by dealership. This was after getting the oil plan repaired for leaking oil as well

While driving on a highway at approximately 50 mph, the vehicle suddenly lost acceleration without warning and was unable to exceed approximately 10–15 mph. This created a dangerous situation requiring immediate maneuvering across multiple lanes of traffic to reach safety. At the time of the incident, the check engine light was illuminated. Diagnostic trouble codes P0191, P2177, and P2179 were later identified, indicating fuel pressure irregularities and air/fuel imbalance. The vehicle was inspected by a dealership, which diagnosed a purge valve vacuum leak and faulty high-pressure fuel system components. The repair required replacement of the purge valve and high-pressure fuel system components. The failure involved components within the fuel/propulsion system and engine systems, which are controlled in part by the electronic control module (ECM). This resulted in a sudden and unexpected loss of propulsion while driving at highway speed. Prior to the incident, there were issues with refueling, including difficulty filling the fuel tank when near empty, indicating a potential developing issue within the fuel system. This condition created a significant safety risk due to the sudden and unexpected loss of vehicle speed in active highway traffic, increasing the risk of collision.

P0741 Error Codes - Torque Converter issue around 100k miles. Shuttering at low rpm between 2nd and 3rd gears. This is a known issue for owners of the 2020 model year. TCM software update and transmission oil change did not fix.

Kia equips their 2020 Tellurides with a plastic oil filter housing unit. Over time, the heat from metal and pressure causes the plastic component to crack, become warped and this leads to oil leaks.

Description of Defect: My 2020 Kia Telluride experienced catastrophic engine failure and excessive oil consumption, which is a known issue for this model year (to the point that I had to sell it just 1 year after I bought it). The vehicle consumes oil at an alarming rate without any dashboard warning lights, or low oil pressure indicators, leading to sudden loss of engine power and potential stalling while in motion. This failure occurred at 93,200 miles, well before the expected service life of the powertrain. Safety Risk: Sudden engine stalling or power loss while driving at highway speeds creates an immediate risk of rear-end collisions and leaves the driver without power steering or braking assistance. The lack of any 'Check Engine' or 'Low Oil' light prior to the mechanical crisis meant there was zero opportunity to safely maneuver off the road before the vehicle became disabled. Furthermore, excessive oil consumption in this engine type has been linked to potential fire risks under the hood. Failure/Incident Details: Despite following all manufacturer-recommended maintenance, the vehicle suffered a major [Engine/Transmission] failure. Kia America has acknowledged the failure but refuses to provide transparency or assistance, despite Technical Service Bulletins (TSB SA428 and TSB 089) existing for these exact powertrain issues. This represents a significant safety defect that puts my family and other drivers at risk.

Oil consumption problem and oil filter housing needing replacement.

The engine is consuming oil

After 8 months of trips to the shop telling them the engine was bad, and spending thousands to do things it didn’t need trying to get warranty to cover engine, kia finally agreed it had issues. Tore it down and piston rings are bad. There was carbon build up despite regular maintenance and they are telling me warranty won’t replace

AWD Coupler locking and wobbling jerks vehicle

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.

The engine is stalling, knocking and the check engine light will occasionally come on. You can smell carbon monoxide and hot oil. We are having to add a quart of oil weekly.

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

My torque converter is failing on my 2020 Kia Telluride. This is a known issue among other owners of this model year, and I believe Kia knows about it and is refusing to acknowledge because of how expensive it is.

The contact's spouse owns a 2020 Kia Telluride. The contact's spouse stated that while the vehicle was parked, the vehicle inadvertently rolled backwards and struck the contact’s aunt as she was exiting the vehicle. The contact’s aunt was taken to the Emergency Room by ambulance/helicopter, where she later succumbed to the injuries and was pronounced dead. The contact stated that the vehicle remained at the scene. In addition, before the incident, there was grinding coming from the gears. The contact was unsure what specific injuries were sustained. A police report was filed. The contact stated that the VIN was included in NHTSA Campaign Number: 24V214000 (Power Train); which the contact related to the failure. The contact had previously received the recall notification. The dealer was not contacted; however, the vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 101,000. Parts distribution disconnect.

Car erratically shifts and provides more power to vehicle when it is not necessary. It often shakes in between shifting.

The check engine and oil pressure light will start to flash when starting to brake. While this is happening the car starts to shake, stall, and you struggle to accelerate. This has happened multiple times and the last time was in the middle of an intersection. KIA dealership did not fix the issue the two times I took it to the shop. The third time in they did some test and said it was an oil consumption issue and the piston rings in the SUV have failed and the car needed a new engine. This car is a 2020 Telluride with 78,759 miles on it. This issued started well before the 78,759 miles. Oil consumption has been a major issue with other KIA models and they have not seemed to fix this issue with the telluride. I believe they have replaced engines at an extremely high rate and now they are denying engine replacement under their warranty and stating piston ring damage is not covered under the warranty due to high oil consumption. You guys have issued a recall on 2021-2023 Seltos and Soul models for piston ring failure and now they do not want to start replacing tellurides. There is a Facebook page out there labeled KIA telluride issues with oil consumption being a big issue in the comments. KIA stating they will not cover the engine replacement is not only wrong is it a safety issue. I truly believe they know this is a serious issue and have not done anything to correct it. This vehicle is still under warranty and I am still in contact with the dealership to fix this issue.