Parts reportedly for luxury car (5)
I believe the answer is:
rolls
'luxury car' is the definition.
(Rolls Royce)
'parts reportedly' is the wordplay.
'parts' becomes 'roles' (parts in a play).
'reportedly' indicates a 'sounds like' (homophone) clue.
'roles' is a homophone of 'ROLLS'.
'for' acts as a link.
(Other definitions for rolls that I've seen before include "documents" , "Moves like a wheel" , "Trundles" , "Luxury car - lists of names" , "Small rounded breads" .)