I have had sudden loss of power now 3 times. At first, the dealer did not run any codes and just adjusted bolt behind the alternator - and 3 weeks later the car lost power. Another dealer ran codes - all transmission and flushed fluids. 6 days later it happened again. All 3 times fuel was lower but not low, about 150 - 230 miles left until empty. I called 3rd different repair shops and it preliminarily sounds like the fuel system, not pumping remaining gas out to the engine to use.