Vehicles in Perth you briefly examine (4)
I believe the answer is:
utes
'vehicles' is the definition.
(I've seen this before)
'perth you briefly examine' is the wordplay.
'perth you' becomes 'u' (I can't explain this - if you can you should give a lot more credence to this answer).
'briefly' means to remove the last letter.
'examine' becomes 'test' (synonyms).
'test' with its last letter removed is 'tes'.
'u'+'tes'='UTES'
'in' acts as a link.
Can you help me to learn more?
(Other definitions for utes that I've seen before include "Trucks" , "American Indians" , "Vehicles" , "Native Americans living chiefly in Colorado, Utah and New Mexico" , "New Mexicans" .)