Order a luxury car and stripped-down banger (7)
I believe the answer is:
arrange
'order' is the definition.
(synonyms)
'a luxury car and stripped-down banger' is the wordplay.
'luxury car' becomes 'rr' (short for Rolls Royce).
'and' says to put letters next to each other.
'stripped down' indicates the central letters.
The middle letters of 'banger' are 'ange'.
'a'+'rr'+'ange'='ARRANGE'
(Other definitions for arrange that I've seen before include "Set in order" , "Plan, organize" , "Organise, plan" , "Put in sequence" , "Order, plan or design" .)