2010 BMW 550I Fuelpropulsion System Problems

I have been having issues , not sure what the problem is but the car doesn’t seem like it’s getting proper gas , & it shakes when I drive . I had to park it in the garage after having it towed home due to an unknown issue .

PURCHASED CAR TWO YEARS AGO AND DRIVETRAIN MALFUNCTION CONTINUES TO LIGHT CONTINUALLY COMES ON, VEHICLE BEGINS TO SHAKE UNCONTROLLABLY. I'VE HAD DRIVEN LEXUS VEHICLES FOR THE PRIOR 30 YEARS AND NEVER SPENT SO MUCH TIME AT THE DEALER TRYING TO RESOLVE THE SAME PROBLEM OR ANY MECHANICAL / ELECTRICAL PROBLEMS. SWITCHING TO BMW WITHIN THESE PAST TWO YEARS HAVE LITERALLY INTERRUPTED MY LIFE, COST ME TIME AND MONEY AS THIS VEHICLE WAS IN THE REPAIR SHOP (DEALER) FOR MORE THAN 70 DAYS WITHIN TWO YEARS (DEALER SPENT JUST AS MUCH TIME WITH THE CAR AS I). AFTER ALL THE REPAIRS THE FAITHFUL DRIVETRAIN MALFUNCTION ENTERS MY LIFE YET AGAIN. CAN YOU DO SOMETHING ABOUT THIS MAJOR COMPONENT IN THIS CAR. AFTER PURCHASING FOR CASH I THOUGHT I WOULD NOT NEED TO PURCHASE ANOTHER CAR FOR AT LEAST 5-6 OR MORE YEARS BUT ONCE AGAIN I FIND MYSELF HAVING TO NOW...