Founded in 1979, Larry H. Miller Dealerships began in a suburb of Salt Lake City, Utah. The first dealership sold Toyotas, but Miller expanded his business from there and created used cars dealerships.
Larry H. Miller grew up in Salt Lake City, which may be why he opened his first dealership in the area. He started in the automotive industry by working as a parts manager at dealerships owned by other people. The Larry H. Miller part of the company name was present from the beginning, as he named the first dealership Larry H. Miller Toyota.
Miller gradually expanded his business by opening other dealerships and expanding into other states. As of 2015, he owns 55 dealerships in seven states. His dealerships are all located in the western United States. He has also expanded into other car-related business ventures, including providing financing through Prestige Financial Services and vehicle service contracts through Total Care Auto.
Miller also owns unrelated businesses. He has an advertising agency called Saxton Horne Communications and is involved in real estate through the LHM Group and Miller Family Real Estate. He also owns the Utah Jazz basketball team and a variety of other sports-related companies. Collectively his business ventures, including Larry H. Miller Used Cars, are known as the Larry H. Miller Group of Companies.