2016 AUDI S7 Power Train Problems

I have a 2016 Audi S7 that uses the notorious 7-speed DSG transmission. I started to notice some random jerking when I pull the car from the red light a month before the car completely dead on me in April 2021. One time when I was driving on the highway at 70mph it throws a "transmission malfunction" code on my dash and put my car in Limp Mode (only 1,3,5,7 gear available). I also experience gear slipping when putting the car in reverse, when putting the car in reverse, 9/10 times the R gear won't engage at all, and the onetime the R gear will only engage when the gas pedal is pressed way down, resulting in the car shooting backward and potentially putting anyone behind the car in danger. One time I almost got rear-ended when the car suddenly stalled at a crossroad when pulling from a red light,...

AT 40K MILES, I'VE BEEN NOTICING THE SYMPTOMS OF A DYING MECH UNIT (BANG/JERK TO STOP, SHIFTING FROM DRIVE TO REVERSE), ETC. THOSE SYMPTOMS HAPPENED WHEN I PULL UP FROM STATIONARY, PUT THE CAR IN REVERSE. CAR WILL ALSO THROW TRANSMISSION ERROR CODE ON DASHBOARD AND PUT IN "LIMP MODE" FROM TIME TO TIME. SINCE IT WAS OUT OF WARRANTY, AUDI QUOTED ME $5800 TO REPLACE THE ENTIRE MECHATRONIC UNIT. MANY THREADS ON THE AUDI FORUM CONFIRM THE ISSUE WAS DUE TO QUALITY CONTROL ON AUDI'S PART, AND AUDI REFUSED TO ISSUE A CALLBACK OR PAY FOR THE EXPENSE FOR OUT-OF-WARRANTY CARS WITH FALUTY 7-SPEED DSG TRANSMISSION.

EXPERIENCED TURBOCHARGER FAILURE WHEN COMING TO A STOP AFTER GETTING OFF THE INTERSTATE AFTER APPROXIMATE 2.5 HOURS OF DRIVING. ENGINE DIED AS CAR SLOWED DOWN SO SUSPECT THE TURBOS FAILED WHILE DRIVING BUT RAM AIR FROM INTERSTATE SPEEDS WAS ADEQUATE TO MAINTAIN THE ENGINE UNTIL IT SLOWED DOWN. THE EXTENDED RUN TIME WITH FAILED TURBOS RESULTED IN METAL FRAGMENTS IN THE OIL SO AFTER INSPECTION, THE ENGINE WAS REPLACED UNDER AN EXTENDED WARRANTY WITH A USED ENGINE. THIS ENGINE HAS APPROXIMATELY 58K MILES ON IT AND I THINK THE REPLACEMENT ENGINE HAD 11K OR SO ON IT. THIS OCCURRED ON DEC 26TH, 2019. THIS PAST FEBRUARY, 2021, NOTED AN ODD WHISTLE SOUND FROM THE TURBO BUT NO WARNING LIGHTS AND SLIGHTLY SLUGGISH ACCELERATION. THE FOLLOWING DAY IT SEEMED TO RUN FINE ON MY WAY TO WORK BUT ON THE WAY BACK IT RAN ROUGH AND THEN DIED SO I HAD...