NHTSA Complaint #11679533 — 2016 KIA SORENTO

We have been having problems with the speed control not functioning. Sometimes we couldn't set the speed or slow it down. Now it doesn't function at all! When it was working the cancel switch would also not work and we had to use the brake pedal to shut it off. Later on while driving through town with the cruise control still on, I stopped at a traffic light and the engine began to race at a high rpms. I took my foot off the gas pedal not knowing exactly what it would do and rpms settled down. Luckily the suv didn't accelerate into the vehicle in front of me. The engine has done this a couple of times with or without the cruise control on. My wife drives this vehicle with our grand children onboard and I am highly concerned about their safety.