The car continues to burn oil and have to put oil in it although not time for oil change. I took the vehicle to dealership several times because whenever I get gas it wont let me start it right away or stutters after getting gas. Whenever the car is in park or idle its making a knocking noise and shaking really bad. The check engine light keeps going off and on but this most recent time it is not on. Initially i was advised they could only diagnose when check engine light on but thats the issue because light ds not stay on. I was on the freeway going about 70mph the car started declining in speed so had to hurry and pull over. Pulled over and turned off the car then it took several times to start back up. Vehicle currently at dealership waiting for more info but said its something related to the engine misfire.