Auction is for 

Audi A3 8V rear diffuser ( 2013-2016, 3 and 5 door model )

It will fit S-Line / S3 bumper only - - It will not fit facelift model --  It will not fit saloon

Diffuser uses slides instead of clips and will require securing with self-tapping bolts. 

Bumper removal is necessary to fit diffuser. 

It’s fiberglass item that comes not finished in any color. 

It will require preparation (sanding/filling/priming) before painting.