The ROTY program incorporates a zonal system, with the top dealership in each zone qualifying to compete for the national award.
The Gosford retailer joins Eblen Subaru (Glenelg), Melville Subaru (Perth), Hunter Subaru (Maitland), Subaru Glen Waverley (Melbourne) and Subaru Narellan (Sydney) as past winners of the ROTY award.
Central Coast Subaru was the top dealer in the Sydney region and, as the top scorer across the country, was the national winner.
Subaru National Sales Manager, Gary Johnston, said: "It is a fantastic effort by Central Coast Subaru and Dealer Principal, Terry Bond, and his team are to be congratulated on taking the number one position.''