Kia Optima فل كامل 2015 Automatic Gasoline The car is a Kia Optima, fully loaded, 2015. Has anyone encountered the same problem?.... Note that the car is fine, I went to Mecca and back, and its acceleration is good. Don't tell me it's the crankshaft, it's impossible to go to Mecca and back with a bad crankshaft.