Vehicle deterioration an ass might like (6)

I believe the answer is:
carrot
'ass might like' is the definition.
I can't tell whether this defines the answer.
'vehicle deterioration' is the wordplay.
'vehicle' becomes 'car' (car is a kind of vehicle).
'deterioration' becomes 'rot' (I've seen this before).
'car'+'rot'='CARROT'
'an' is the link.
Can you help me to learn more?
(Other definitions for carrot that I've seen before include "Incentive (but not the stick)" , "One prov. used to encourage" , "Orange vegetable" , "The vegetable for persuasion" , "Red vegetable used as inducement" .)
