PM in car spy sabotaged (7)
I believe the answer is:
autopsy
'pm' is the definition.
('autopsy' can be a synonym of 'pm')
'car spy sabotaged' is the wordplay.
'car' becomes 'auto' ('auto' can be a synonym of 'car').
'sabotaged' indicates an anagram.
'spy' with letters rearranged gives 'psy'.
'auto'+'psy'='AUTOPSY'
'in' acts as a link.
(Other definitions for autopsy that I've seen before include "Far from quick examination" , "An official post-mortem examination" , "Post-mortem inspection" , "Dissection of a body to determine the cause of death" , "final examination" .)