Tries starter of estate car (6)
I believe the answer is:
hearse
'car' is the definition.
(hearse is a kind of car)
'tries starter of estate' is the wordplay.
'tries' becomes 'hears' ('hear' can be a synonym of 'try').
'starter of' suggests taking the first letters.
The initial letter of 'estate' is 'e'.
'hears'+'e'='HEARSE'
(Other definitions for hearse that I've seen before include "Vehicle for one's last journey" , "Vehicle for conveying a coffin" , "Coffin conveyance" , "Carriage for a corpse" , "final vehicle?" .)