From the Costco site: Costco and its affiliates do

From the Costco site: Costco and its affiliates do not sell vehicles or negotiate individual transactions. A participation fee has been paid by the participating dealers. All new vehicles arrange for sale are subject to availability and price prearranged with the participating franchised dealer.


Below is my partial list of dealer groups that I compiled directly from their websites; less than two weeks old. Largest dealer groups first, number of dealerships, states in, headquarters. I didn’t bother with revs or cars sold because there were too many conflicting numbers. Besides, Berman usually say top ten or so, or more than x number of dealerships, or geographic location. I kept it simple.


AutoNation – 360 - 16 states - Fort Lauderdale, Florida

Lithia Motors – 182 - 18 states – Medford, Oregon

Penske Automotive – 176 - 19 states, also 103 foreign dealerships - Bloomfield Hills, Michigan

Group 1 Automotive – 117 - 15 states, also 58 foreign dealerships – Houston, Texas

Sonic Automotive – 112 - 14 states – Charlotte, North Carolina

Hendrick Automotive Group – 97 - 14 states – Charlotte, North Carolina

Asbury Automotive Group – 81 - 10 states – Duluth, Georgia

Larry H. Miller Dealerships – 65 - 7 states – Sandy, Utah

Capstone Automotive Group (GP Capital) (Prime Automotive Group + 4 smaller groups) – 64 – 7 states – New York, New York (Prime AG Westwood, Massachusetts)

Herb Chambers – 60 - Massachusetts and Rhode Island – Sommerville, Massachusetts

Ken Garff Automotive Group – 54 - 6 states – Salt Lake City, Utah

Suburban Collection – 51 - California and Michigan – Troy Michigan

Greenway Automotive – 47 - 8 states – Orlando, Florida

Napleton Automotive Group – 46 - 7 states - Oakbrook Terrace, Illinois

Bergstrom Automotive – 44 - Wisconsin - Neenah, Wisconsin

Serra Automotive Group (Michigan) – 43 - 7 states – Grand Blanc, Michigan
Serra Automotive Group (Alabama) – 11 – Alabama – Birmingham, Alabama

Victory Automotive Group – 41 - 10 states – Canton, Michigan

MileOne Auto Group (Atlantic Automotive Group, Staluppi Auto Group) – 40 - 4 states – Baltimore, Maryland

Findlay Automotive Group – 38 - 4 states – Henderson, Nevada

Holman Automotive Group Inc – 37 - 8 states - Mt. Laurel, New Jersey

Ganley Auto Group – 37 - Ohio - Brecksville, Ohio

Bob Rohrman Auto Group – 35 - Indiana, Illinois, Wisconsin - Lafayette, Indiana