Bmw 2010 750i misfire gas smell

[yoksa]

OK here’s the story. Got off work early went home, got home I park the car and got up out of it No check engine light or No gas smell no knocking was never noticed. My mom called and said we got to go pick up something we went on the highway driving no gas smell no engine light or any knoccing came back home park the car next day went out with omegle xender My mom did not touch the Bmw at all that day the day after next hopping in to turn the car on this is exactly what happened n sounded like I was flashing gas smell these were the codes P0301 cylinder 1 misfire P0302 cylinder 2 misfire P0304 cylinder 4 misfire P13B4 crankshaft A reference error Bank 1 P13B6 crankshaft B reference error Bank 1