| VAUGHN AUTOMOTIVE Ottumwa, IA | 6 | -$2,992 | 6 |
| DEERY BROTHERS, INC. West Burlington, IA | 1 | -$2,580 | 1 |
| STEW HANSEN BUICK GMC Clive, IA | 8 | -$2,465 | 8 |
| BOB BROWN BUICK GMC Ankeny, IA | 5 | -$2,276 | 5 |
| GREGG YOUNG BUICK GMC, LLC Indianola, IA | 3 | -$2,000 | 3 |
| NIELSEN MOTORS Humboldt, IA | 1 | -$1,845 | 1 |
| KARL CHEVROLET GMC Webster City, IA | 5 | -$1,802 | 5 |
| SHOTTENKIRK, INC. Fort Madison, IA | 1 | -$1,575 | 1 |
| LE MARS GMC Le Mars, IA | 4 | -$1,570 | 4 |
| FOREST CITY AUTO CENTER Forest City, IA | 2 | -$1,479 | 2 |
| PELLA MOTORS Pella, IA | 4 | -$1,306 | 4 |
| GRINNELL MOTORS Grinnell, IA | 2 | -$1,291 | 2 |
| MIKE MOLSTEAD CHEVROLET, GMC Charles City, IA | 2 | -$1,185 | 2 |
| ED MORSE CHEVROLET BUICK GMC Muscatine, IA | 4 | -$1,125 | 4 |
| EDWARDS CHEVROLET BUICK GMC Council Bluffs, IA | 17 | -$1,020 | 15 |
| DEYARMAN AUTOMOTIVE Knoxville, IA | 2 | -$897 | 2 |
| KARL GMC OF MARSHALLTOWN Marshalltown, IA | 6 | -$695 | 6 |
| DALE HOWARD, INC. Iowa Falls, IA | 2 | -$350 | 2 |
| ED MORSE CHEVROLET GMC NORTHEAST De Witt, IA | 11 | -$49 | 8 |
| KEMNA AUTO CENTER Algona, IA | 1 | $0 | 1 |
| GLENDENNING MOTOR CO. INC. Mount Ayr, IA | 2 | $0 | 2 |
| LAUTERBACH BUICK-GMC Newton, IA | 1 | $0 | 1 |
| PAT CLEMONS, INC. Boone, IA | 3 | $0 | 3 |
| CHARLES CAPPER AUTO CENTER, INC. Marengo, IA | 1 | $0 | 1 |
| RICHARDSON BUICK-CADILLAC-GMC TRUCK Dubuque, IA | 4 | $0 | 4 |
| KEMNA AUTO OF FORT DODGE Fort Dodge, IA | 1 | $0 | 1 |
| GREEN BUICK GMC INC. Davenport, IA | 5 | $0 | 5 |
| BILLION COMMUNITY, INC. Iowa City, IA | 6 | $0 | 6 |
| MCGRATH BUICK GMC CADILLAC Cedar Rapids, IA | 8 | $0 | 8 |
| BILLION GMC Sioux City, IA | 3 | $0 | 3 |
| EDWARDS CHEVROLET GMC Storm Lake, IA | 1 | $0 | 1 |
| BILLION CHEVROLET GMC Clinton, IA | 1 | $0 | 1 |