2024 Kia Carnival Engine Problems

“Our 2024 Carnival has had a recurring engine oil leak that has required the vehicle to be left at the dealership 4 times for the same issue. Each time we get the van back the repair lasts about 1-3 weeks (depending on how often it's driven). Oil continues to leak from the engine area, creating risk of engine damage or a potential fire hazard if oil contacts hot components. The issue has not been resolved despite repeated repair attempts under warranty. The Carnival has 38,092 miles on it, and has been in the repair shop over 4 times. …”

“My Kia vehicle has an ongoing engine oil leak that has not been properly repaired under warranty. The vehicle was taken to an authorized Kia dealership for diagnosis and repair of the oil leak. I was informed by the dealership that Kia engineers indicated that in similar situations the typical resolution is engine replacement. However, in my case, the dealership was instructed to attempt sealing the oil pan instead of replacing the engine. I was advised that if this repair did not resolve the issue, I could bring the vehicle back for further service. …”

“I am submitting this complaint regarding my Kia Carnival. The vehicle has a recurring and dangerous problem where the engine suddenly jumps and, if I continue pressing the gas, it shuts off while driving. This has happened multiple times, including in the middle of the highway, creating a serious safety risk for myself, my passengers, and other drivers. I have taken the vehicle to a Kia dealership on multiple occasions, but they have not been able to identify or repair the issue. I also contacted Kia corporate, obtained a case number, and was told someone would follow up with me. …”

“Vehicle vents gasoline fumes into the passenger cabin causing drowsiness, headaches, and impaired cognitive function as well as exposure to a carcinogen. Vehicle has significantly high levels of CO2 inside the cabin at all times (2000-4000ppm) as well as TVOC and HCHO being higher than OSHA allows. Engine temperature gauge does not function properly and sliding doors have closed on myself and my children leaving bruises. If car were to be in an accident it would likely explode. Critical levels of CO2 have caused me to fall asleep while driving on several occasions including on the highway. …”

“The contact owns a 2024 Kia Carnival. The contact stated that while driving at various speeds, the vehicle failed to properly accelerate while depressing the accelerator pedal. The vehicle was shuddering and vibrating while attempting to accelerate with the check engine warning light illuminated. The vehicle was towed to the dealer on several occasions, but the cause of the failure was not determined. The manufacturer was notified of the failure. The failure mileage was 3,500.”