Fail to recall counterfeit model (6)
I believe the answer is:
forget
'fail to recall' is the definition.
'counterfeit model' is the wordplay.
'counterfeit' becomes 'forge' (synonyms).
'model' becomes 'T' (Ford Model T car).
'forge'+'t'='FORGET'
(Other definitions for forget that I've seen before include "Leave behind unintentionally" , "Be unable to remember" , "Stop remembering" , "Lose memory of" , "Neglect (to do)" .)