Colourful vehicle associated with Cleveland (6)
I believe the answer is:
redcar
'cleveland' is the definition.
I don't know anything about this answer so I cannot judge whether it can be defined by this definition.
'colourful vehicle associated with' is the wordplay.
'colourful' becomes 'red' (similar in meaning).
'vehicle' becomes 'car' (car is a kind of vehicle).
'associated with' is a charade indicator (letters next to each other).
'red'+'car'='REDCAR'
Can you help me to learn more?
(Other definitions for redcar that I've seen before include "Racecourse" , "Town near 11 [HARTLEPOOL]" , "northern coastal town" , "Town in Cleveland" , "North Yorkshire town" .)