WA dealerships have now taken out Mitsubishi's past two national top metro dealer awards.
Gary Fitch, from John Hughes Mitsubishi in Victoria Park, is the latest recipient.
The win follows last year's win by John Barbera's Paceway Mitsubishi in Osborne Park.
Mr Fitch also won one of 15 Distinguished Dealer awards, the dealership's eighth in a row.
The dealership has also been a top-three seller of Mitsubishis nationally for 26 years.
David Di Virgilio, of Wanneroo Mitsubishi, was the other WA Distinguished Dealer winner.
This award assesses customer satisfaction, sales, and service and facility standards.