Vehicle was blue (5)

I believe the answer is:

moped

This clue is a double definition.

'vehicle' is the first definition.
(moped is a kind of vehicle)

'was blue' is the second definition.
(past tense of 'mope')

(Other definitions for moped that I've seen before include "Motor cycle -- sulked" , "Motor vehicle - languished" , "Was miserable; a vehicle" , "Two-wheeled vehicle" , "dejected" .)

I've seen this clue in The Telegraph.

Want a hint initially instead of a full solution? Install my app