Clever remark in annual test (3)
I believe the answer is:
mot
I believe this clue is a double definition.
'clever remark' is the first definition.
(I've seen this before)
'annual test' is the second definition.
(Ministry of Transport test)
'in' is the link.
(Other definitions for mot that I've seen before include "Clever remark" , "Wisecrack (for older cars!)" , "Irish girlfriend" , "Word in France, bon perhaps" , "Witty words" .)