Sams car could produce contemptuous remarks (7)
I believe the answer is:
sarcasm
'contemptuous remarks' is the definition.
'sarcasm' can be an answer for 'remarks' (I have seen 'Caustic remarks ' mean 'sarcasm' so perhaps 'remarks' could also mean 'sarcasm'). I am not sure about the 'contemptuous' bit.
'sams car could produce' is the wordplay.
'could produce' is an anagram indicator (I've seen this in other clues).
'sams'+'car'='samscar'
'samscar' with letters rearranged gives 'SARCASM'.
Can you help me to learn more?
(Other definitions for sarcasm that I've seen before include "Caustic remarks" , "Show of ironic contempt" , "Insulting irony" , "Mocking words intended to insult" , "Scornful attitude" .)