Gas guzzler (4)

I believe the answer is:

auto

(Other definitions for auto that I've seen before include "Motor vehicle, in short" , "Car (mostly US)" , "Car (American)" , "American vehicle" , "Prefix to denote self or same" .)

I've seen this clue in the King Feature Syndicate.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.