Concerns excluding first of electric vehicles (4)
I believe the answer is:
cars
'vehicles' is the definition.
(car is a kind of vehicle)
'concerns excluding first of electric' is the wordplay.
'concerns' becomes 'cares' ('care' can be a synonym of 'concern').
'excluding' indicates named letters should be taken away.
'first of electric' becomes 'e' (1st letter of 'electric').
'cares' with 'e' taken out is 'CARS'.
(Other definitions for cars that I've seen before include "... when these may be driven?" , "Private vehicles" , "Motor vehicles" , "Automobiles" .)