| STEPHEN CHEVROLET GMC Monticello, IA | 1 | -$4,471 | 1 |
| KARL GMC OF MARSHALLTOWN Marshalltown, IA | 7 | -$4,381 | 7 |
| LE MARS GMC LE MARS, IA | 3 | -$4,376 | 3 |
| FOREST CITY AUTO CENTER Forest City, IA | 1 | -$4,106 | 1 |
| SHOTTENKIRK, INC. Fort Madison, IA | 4 | -$3,440 | 3 |
| STEW HANSEN BUICK GMC Clive, IA | 4 | -$3,120 | 4 |
| STEPHEN CHEVROLET GMC MONTICELLO, IA | 1 | -$2,950 | 1 |
| MIKE MOLSTEAD CHEVROLET, GMC Charles City, IA | 1 | -$2,794 | 1 |
| DALE HOWARD, INC. IOWA FALLS, IA | 3 | -$2,333 | 3 |
| PELLA MOTORS Pella, IA | 3 | -$2,173 | 2 |
| MCGRATH BUICK GMC CADILLAC Cedar Rapids, IA | 10 | -$1,863 | 10 |
| GREGG YOUNG BUICK GMC, LLC Indianola, IA | 1 | -$1,844 | 1 |
| DEYARMAN AUTOMOTIVE Knoxville, IA | 3 | -$1,829 | 3 |
| COMMUNITY BUICK GMC, INC. Waterloo, IA | 5 | -$1,000 | 5 |
| GREGG YOUNG CHEVROLET GMC ATLANTIC ATLANTIC, IA | 6 | -$921 | 5 |
| BOB BROWN BUICK GMC Ankeny, IA | 16 | -$463 | 15 |
| ED MORSE CHEVROLET BUICK GMC Muscatine, IA | 4 | -$279 | 3 |
| RICHARDSON BUICK-CADILLAC-GMC TRUCK Dubuque, IA | 4 | -$51 | 4 |
| EDWARDS CHEVROLET BUICK GMC Council Bluffs, IA | 27 | $0 | 9 |
| BILLION GMC SIOUX CITY, IA | 5 | $0 | 5 |
| GREEN BUICK GMC INC. Davenport, IA | 3 | $0 | 3 |
| PAT CLEMONS, INC. BOONE, IA | 2 | $0 | 1 |
| BILLION COMMUNITY, INC. Iowa City, IA | 2 | $0 | 2 |
| VAUGHN AUTOMOTIVE OTTUMWA, IA | 2 | $0 | 1 |
| GLENDENNING MOTOR CO. INC. Mount Ayr, IA | 2 | $0 | 2 |
| BILLION COMMUNITY, INC. IOWA CITY, IA | 1 | $0 | 1 |
| NIELSEN MOTORS HUMBOLDT, IA | 1 | $0 | 1 |
| CHARLES CAPPER AUTO CENTER, INC. MARENGO, IA | 1 | $0 | 1 |
| WEIS GMC, INC. DECORAH, IA | 1 | $0 | 1 |
| KEAST AUTO CENTER HARLAN, IA | 1 | $0 | 1 |
| KEMNA AUTO OF FORT DODGE Fort Dodge, IA | 1 | $0 | 1 |
| KARL CHEVROLET GMC Webster City, IA | 3 | +$74 | 2 |
| ED MORSE CHEVROLET GMC NORTHEAST DE WITT, IA | 2 | +$5,160 | 0 |
| ED MORSE CHEVROLET BUICK GMC MUSCATINE, IA | 1 | — | 0 |