Came across this Document when searching some RS6 files. I have been told countless times that a C5 RS6 avant cannot be imported into the States
- https://www.federalregister.gov/docu...or-importation
TLDR -
Final Decision


Accordingly, on the basis of the foregoing, NHTSA decided that 2003 Audi RS6 and RS6 Avant passenger cars that were not originally manufactured to comply with all applicable FMVSS, are substantially similar to 2003 Audi RS6 and RS6 Avant passenger cars originally manufactured for importation into and sale in the United States and certified under 49 U.S.C. 30115, and are capable of being readily altered to conform to all applicable FMVSS.