Vehicle runs into West End performer (7)
I believe the answer is:
tractor
'vehicle' is the definition.
(tractor is a kind of vehicle)
'runs into west end performer' is the wordplay.
'runs' becomes 'r' (cricket abbreviation).
'into' means one lot of letters goes inside another.
'end' says to take the final letters.
'performer' becomes 'actor' (actor is a kind of performer**).
The final letter of 'west' is 't'.
't'+'actor'='tactor'
'r' going within 'tactor' is 'TRACTOR'.
(Other definitions for tractor that I've seen before include "Powerful farm vehicle for heavy work" , "Tower" , "Type of truck with a a cab but no body" , "Vehicle used for hauling heavy loads" , "Farm machine used for pulling" .)