2020 Kia Forte: sudden loss of power

Filed Oct 8, 2026 · Driver assistance, Engine · VA

During a day trip on 9/19/26 my 2020 Kia Forte (purchased new and well maintained) lost power and several of the dash board lights came on including check engine, traction/stability control, and collision alerts. The car entered what I was told is "limp mode". I had the car towed home and after one shop misdiagnosed the problem I had it towed to the Kia dealership where purchased. I was told the engine had code p0017. I was sent a document that the "phaser sheared off p0017 exhaust cam and cvvd gear timing off-recommend long block-cvvd replacement may still have engine damaged after replacement" with a price of $9053.39 attached. Kia service manager is supposed to be seeing about assistance for repair as it is cost prohibitive and I have proof of proper maintenance however I am not receiving info on process unless I reach out. Car has been in Kia possession since 9/24/26.

Filed May 8, 2026 · Engine · IN

While driving, the vehicle suddenly began knocking severely, smoking, leaking oil, and then shut off unexpectedly without adequate warning. This created a serious safety hazard and near fire risk. The engine assembly failed catastrophically. Dealership inspection documented: connecting rod punctured engine block bearing material found in oil pan broken piston components in oil pan oil leakage underneath engine complete engine seizure/failure The dealership confirmed and documented the failure and replaced the engine assembly. Repair records and failed components should still be available for inspection through the dealership. My safety and the safety of others were placed at risk because the vehicle suddenly lost power while driving. Oil leaked from the damaged engine and the engine compartment began smoking. The engine could have caught fire or caused an accident due to sudden loss of power. There were no adequate warning indicators before failure. No meaningful oil-pressure or low-oil warning appeared until the vehicle was already smoking and severely damaged. This failure closely mirrors known Kia engine defect investigations and Recall Campaign SC209 / the federal safety agency Recall 21V259000 involving: connecting rod bearing damage piston oil ring defects excessive oil consumption engine seizure engine stall fire risk Although my VIN is not currently included in the recall population, the documented failure symptoms are substantially similar. I also report that another Kia vehicle in my household, a 2017 Kia Sorento, experienced a separate rod-bearing-related engine seizure despite proper maintenance and documented oil changes. The connecting rod blew a hole through the engine block, causing oil leakage and heavy smoke while driving. The vehicle could have caught fire or exploded, placing my life and others at serious risk due to sudden engine failure without adequate warning. Engine replaced under warranty; concerned for safety after 2 similar Kia failures.

Filed Apr 21, 2026 · Transmission · OH

I am reporting a transmission failure in my 2020 Kia Forte with approximately 54,000 miles. The vehicle experienced a sudden and complete transmission failure on March 19, 2026, on the highway from Cleveland to Cincinnati. after being owned for less than seven months. The vehicle is now at a dealership 2.5 hours away, requiring a full transmission replacement. This appears to be a premature failure and not consistent with normal wear and tear for a vehicle with this mileage. I am aware of a Technical Service Bulletin issued by Kia regarding IVT transmission issues in 2019–2021 Kia Forte models, which may be related to this failure. As well as legal investigations and lawsuits regarding said transmission models. Given the safety implications and potential for loss of power while driving, I am submitting this complaint for review.

Filed Aug 21, 2025 · Engine, Fuel system · AL

I own a 2020 Kia Forte LXS with approximately 136,000 miles. The check engine light came on with code P0420 (“catalyst system efficiency below threshold”), and an Express Oil Change & Tire Engineers location confirmed the catalytic converter is failing. The back pressure was measured and is within spec but slightly elevated, showing the part is deteriorating. I was also told my O2 sensors are burned due to the failing catalytic converter. This failure affects drivability and safety: the vehicle sometimes struggles on acceleration and hills, and I feel vibrations through the gas pedal. Because I commute 50 miles each way to work on the interstate, sudden loss of power would put me at risk in high-speed traffic. I have learned Kia and Hyundai vehicles from other years/models (including the Forte) have had recalls and extended warranties for premature catalytic converter failure and excessive oil consumption, but Kia has not yet extended coverage to the 2020 Forte. This appears to be the same issue. The vehicle has been inspected by Express Oil Change & Tire Engineers, and the quoted cost for replacement is $3,000–$3,600. This should be investigated for potential recall or warranty extension to include the 2020 model year.

Filed Apr 21, 2023 · Electrical, Engine · IL

I leased car 2020 Illinois. No problems. I had car transported to in 2022 to Los Angeles, and after a few months, the car would check engine light ALL lights I believe, and car suddenly stops and dies out at each stop light. This happened 3 times and frightened me. It happened every couple months and the repair people NEVER put notes on the repair invoice!! About exactly why I was bringing car in for repair, even if nothing on computer showed up, almost like the defect was bypassing (tricking computer) inspection. Have to restart and it would lost all power seconds later and on rainy days, passenger floor soaked. NOTHING on repair places nor dealership would show any problem to fix?? However, when brought back to Illinois, no problem with car, so far since January. So car did not like California OR their emission gasoline no good. Plus even in heavy snow and rain last 3-months in Illinois, passenger carpet never got wet.