Returned loan for vehicle (3)
I believe the answer is:
bus
'for vehicle' is the definition.
(public transport vehicle)
'returned loan' is the wordplay.
'returned' shows that the letters should be reversed in order.
'loan' becomes 'sub' (I've seen this before).
'sub' back-to-front is 'BUS'.
(Other definitions for bus that I've seen before include "Motor-coach" , "Public service vehicle" , "Road vehicle able to carry many passengers" , "Something caught" , "People carrier" .)