NHTSA Complaint #11091979 — 2013 AUDI S6

CAR SUDDENLY HAD A "ROUGH IDLE", I.E. SHAKING 1-2INCHES BACK-AND-FORTH WHILE IN IDLE, AFTER DRIVING FOR 20 MINUTES AT NORMAL CONDITIONS. SHUTDOWN CAR. ATTEMPTED TO RESTART CAR, BUT THE ENGINE WOULD NOT TURNOVER THE FIRST ATTEMPT. TRIED AGAIN - ENGINE STARTED THE SECOND TIME. NO CHECK ENGINE LIGHT APPEARED, SO I ASSUMED CAR WAS SAFE TO DRIVE. DROVE CAR TO DEALER FOR SERVICE, AND THEN I NOTED THAT THE CAR STARTED MAKING A FEINT GRINDING NOISE WHEN ACCELERATING. TECHNICIAN NOTED THAT BOTH TURBOCHARGERS HAD FAILED, LIKELY DUE TO INADEQUATE OIL FLOW. CAR HAS 60K MILES ON IT, SO A CATASTROPHIC TURBOCHARGER FAILURE THIS EARLY-ON WAS UNEXPECTED AND POTENTIALLY DANGEROUS (CAR COULD HAVE STALLED DUE WITH ENGINE BEING STARVED FOR AIR), AND NO CHECK ENGINE LIGHT APPEARED TO INDICATE SOMETHING WAS SEVERELY WRONG WITH CAR. THIS ISSUE APPEARS TO BE WIDE-SPREAD BASED ON DISCUSSIONS AVAILABLE IN ONLINE FORUMS: HTTPS://WWW.AUDIZINE.COM/FORUM/SHOWTHREAD.PHP/806039-BOOM-GOES-THE-TURBO