2012 Kia Optima power train problems

“Sudden engine failure while driving with no warning. Vehicle began jerking, shaking, and losing power. RPMs dropped unexpectedly and the engine stalled intermittently. Multiple misfire codes were present (cylinders 1, 3, and 4), and the engine was found to have low or no compression in cylinder 1. The condition rapidly worsened to near complete engine failure. The vehicle was operating normally prior to this incident. This failure is consistent with known Kia engine defects involving internal engine damage, including rod bearing failure. This is a safety concern due to sudden loss of power while driving.”

“The contact owns a 2012 Kia Optima. The contact stated that while parking the vehicle, the gear shifter was shifted into park; however, the message to shift to park was displayed. In addition, the contact stated that there was a delay while shifting gears. The vehicle was taken to the dealer; however, the failure was not duplicated. The contact stated that the vehicle was taken to several dealers, and the failure was not duplicated. The contact was informed by one dealer that the transmission needed to be replaced. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The contact researched and determined that the failure was related to the TCM failure. The manufacturer was made aware of the failure. The failure mileage was approximately 78,000.”

“The failure involves the component covered under the active safety recall campaign. The affected part/system is still installed on the vehicle and is available for inspection upon request by the manufacturer, dealership, or NHTSA. Recall number : 23V6552 While driving in traffic, the vehicle suddenly began to slow down without warning, started jerking, and lost normal operation. I was forced to pull over to avoid a collision. This sudden loss of power and control placed me, my passengers, and surrounding drivers at risk of an accident. Yes. The issue was confirmed by an authorized dealership. The dealership acknowledged that the problem is directly related to the active safety recall but refused to perform the repair due to vehicle mileage exceeding 150,000 miles. The vehicle has been inspected by an authorized dealership representing the manufacturer. No inspection has been performed by police or insurance representatives at this time. No warning lights or messages appeared prior to the incident. I had not received the recall notification letter at the time I purchased the vehicle. The first occurrence happened suddenly on 12/10/2025, when the vehicle began…”

“Subject: RECALL VIOLATION: Kia on the Boulevard (Philadelphia) - Refused Remedy, Charged $199, Returned Unsafe Vehicle Vehicle Information: [Year] Kia Optima Hybrid Dealership Name: Kia on the Boulevard Dealership Address: 11295 Roosevelt Blvd, Philadelphia, PA 19154 Complaint Description: 1. The Safety Incident: While operating the vehicle, I experienced a catastrophic engine failure. Thick smoke poured from the engine compartment, followed by immediate stalling. This presented a severe fire risk and safety hazard. 2. Dealer Misconduct & Illegal Charges: I towed the vehicle to Kia on the Boulevard (11295 Roosevelt Blvd, Philadelphia) for the active engine recall remedy. The dealership: * Refused to perform the recall repair free of charge. * Forced me to pay a $199 "diagnostic fee" just to look at the recall-related defect, which should be covered by the manufacturer. * Threatened me with $45/day storage fees if I did not pay the $199 and remove the vehicle immediately. 3. Current Status: Under the threat of accumulating storage fees, I was coerced into paying the $199 and towing the vehicle back to my residence. The dealership knowingly released a vehicle…”

“The contact owns a 2012 Kia Optima. The contact stated that while driving at various speeds, the vehicle hesitated while depressing the accelerator pedal. The check engine warning light eventually became illuminated, and the vehicle was taken to an independent mechanic to be diagnosed. The mechanic retrieved a fault code for the engine variable valve timing solenoid. The contact was informed that the engine variable valve timing solenoid needed to be replaced. The contact called a dealer and was informed that there were no recalls on the vehicle for the failure. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 130,000.”

“Power train and engine failure and causing my Kia to catch on fire at 11:30 coming back home from work. I was Driving home and smell smoke and car was shaking and when I stopped at the highway to open and look fire was on while driving and I had to call 911 and stop the fire. I had some fire extinguisher in the car I stopped the fire and towed the car and I replaced engine and powered train For over $9000 between repairs and labor and transmission and engine”