NHTSA Complaint #11583520 — 2017 KIA SORENTO

Vehicle drastic stalling problem. It would often stall and dramatically reduce speed. Experienced 3 times driving on highway reduced fro 60mph to 20mph without breaking and engine light come on while vehicle has heavy shaking and consistent stalling. First time I was told it was knock sensor and got it replaced. Second time I was told it was coil and spark plug and had it replaced. Third time same thing as second time I was told coil/oil consumption burning issue and to get it checked at dealer. Dealer said cylinder failed compression test and need new engine. Vehicle only 94550 miles. I have always felt the vehicle stalling and I thought it was normal since I have mentioned to dealer service on occasion if it is normal to require oil change before the recommended oil change date/millage on the dash. The answer I got was it's just an estimate and it's normal. Recently I have been searching online and there are forums with complaint from other 2017 kia Sorento owners of similar issues. There seem to have been class action settlement on 3.5 Lt engine Sorento about consumption issue. My concern is if this is a difect, I dont want to risk driving on a highway and I have sudden reduction in speed without breaking indication for other drivers to react. Fortunately I work at night and it was not much vehicles on the road. Vehicle is currently at the dealer debating warranty coverage and testing for cause. I will upload the repairs and findings when complete. God forbids I get new engine and I deal with the same issue on the wrong time of the day. Dates of occurense June2, Sept. 23 of 2023, and march 29, 2024. In kia dealer shop since 04/05/2024.