Have enough money for a French car (6)
I believe the answer is:
afford
'have enough money for' is the definition.
'a french car' is the wordplay.
'french' becomes 'f'.
'car' becomes 'ford' (ford is a make of car).
'a'+'f'+'ford'='AFFORD'
(Other definitions for afford that I've seen before include "Able to bear the expense" , "Give, provide" , "Yield!" , "Be able to buy" , "Be able to spare the money" .)