Repairs, or trades, sporty vehicle (8)
I believe the answer is:
roadster
'sporty vehicle' is the definition.
(I've seen this before)
'repairs or trades' is the wordplay.
'repairs' indicates an anagram (I've seen 'repair' mean this (letters are fixed or repaired)).
'or'+'trades'='ortrades'
'ortrades' is an anagram of 'ROADSTER'.
(Other definitions for roadster that I've seen before include "sporty vehicle" , "Old car" , "An open car without rear seats" , "Small open-top car" , "Open-topped car" .)