Manage to secure superior type of vehicle (5)
I believe the answer is:
coupe
'type of vehicle' is the definition.
'manage to secure superior' is the wordplay.
'manage' becomes 'cope' ('cope' can be a synonym of 'manage').
'to secure' indicates putting letters inside.
'superior' becomes 'u' (I've seen this in other clues).
'cope' placed around 'u' is 'COUPE'.
(Other definitions for coupe that I've seen before include "Car with just two doors and two front seats" , "Two-door car" , "Type of car; dish" , "Car; dessert glass" , "Dessert dish" .)