Blemished red cars badly (7)
I believe the answer is:
scarred
'blemished' is the definition.
(similar in meaning)
'red cars badly' is the wordplay.
'badly' indicates anagramming the letters.
'red'+'cars'='redcars'
'redcars' with letters rearranged gives 'SCARRED'.
(Other definitions for scarred that I've seen before include "Marked for life" , "Bearing the marks of wounds" , "Blemished" , "bearing evidence of injury" , "Marked (by wound)" .)