2011 INFINITI G25 Engine Problems

VEHICLE HAS BEEN IN THE SHOP OVER 12 TIMES AND HAS HAD 2 ECM REPLACEMENTS, 3 MASS AIRFLOW SENSORS, 2 THROTTLE BODIES, 3 COMPUTER REPROGRAMS, MULTIPLE AIR FILTER REPLACEMENTS AND TWO FUEL INJECTION CLEANINGS. VEHICLE'S CHECK ENGINE LIGHT IS ON AGAIN AND WAS TOLD VEHICLE HAS ANOTHER CORRUPT MASS AIR FLOW SENSOR. INFINITI IS UNWILLING TO FIX THE VEHICLES WARRANTIED PARTS. WAS INVOLVED IN AN ACCIDENT 06/2016 AND WAS T-BONED THE OTHER DRIVER WAS GOING 40 MILES AN HOUR AND THE AIRBAGS DID NOT DEPLOY. WHEN ONE OF THE MASS AIR FLOW SENSORS FAILED THE VEHICLE ROLLED DOWN THE HIGHWAY. INFINITI WANTS ME TO TRADE THE VEHICLE IN AT THE LOWEST DEPRECIATED AMOUNT WITH AN OVERHEAD AMOUNT OF 8K ON THE LOAN.