| ED MORSE CHEVROLET BUICK GMC Muscatine, IA | 2 | -$2,875 | 2 |
| KARL CHEVROLET GMC Webster City, IA | 4 | -$2,858 | 4 |
| BOB BROWN BUICK GMC Ankeny, IA | 12 | -$2,675 | 12 |
| MCGRATH BUICK GMC CADILLAC Cedar Rapids, IA | 2 | -$2,347 | 2 |
| LE MARS GMC Le Mars, IA | 5 | -$2,343 | 5 |
| VAUGHN AUTOMOTIVE Ottumwa, IA | 2 | -$2,279 | 2 |
| GREGG YOUNG BUICK GMC, LLC Indianola, IA | 4 | -$2,180 | 4 |
| STEPHEN CHEVROLET GMC Monticello, IA | 1 | -$2,086 | 1 |
| STEW HANSEN BUICK GMC Clive, IA | 3 | -$2,069 | 3 |
| DALE HOWARD, INC. Iowa Falls, IA | 1 | -$2,000 | 1 |
| PELLA MOTORS Pella, IA | 2 | -$1,832 | 2 |
| KEAST AUTO CENTER Harlan, IA | 1 | -$1,823 | 1 |
| ED MORSE CHEVROLET GMC NORTHEAST De Witt, IA | 6 | -$1,421 | 6 |
| GREGG YOUNG CHEVROLET GMC ATLANTIC Atlantic, IA | 3 | -$1,167 | 3 |
| DEYARMAN AUTOMOTIVE Knoxville, IA | 2 | -$1,154 | 2 |
| EDWARDS CHEVROLET BUICK GMC Council Bluffs, IA | 7 | -$1,143 | 7 |
| KARL GMC OF MARSHALLTOWN Marshalltown, IA | 5 | -$977 | 4 |
| DEERY BROTHERS, INC. West Burlington, IA | 2 | -$975 | 1 |
| EDWARDS CHEVROLET GMC Storm Lake, IA | 1 | -$855 | 1 |
| BILLION COMMUNITY, INC. Iowa City, IA | 7 | $0 | 7 |
| BOB STEPHEN MOTORS-INC. Manchester, IA | 1 | $0 | 1 |
| PAT CLEMONS, INC. Boone, IA | 1 | $0 | 1 |
| REX CHEVROLET GMC, LTD Odebolt, IA | 2 | $0 | 2 |
| RICHARDSON BUICK-CADILLAC-GMC TRUCK Dubuque, IA | 4 | $0 | 4 |
| LAUTERBACH BUICK-GMC Newton, IA | 1 | $0 | 1 |
| CHARLES CAPPER AUTO CENTER, INC. Marengo, IA | 1 | $0 | 1 |
| KEMNA AUTO OF FORT DODGE Fort Dodge, IA | 1 | $0 | 1 |
| SHOTTENKIRK, INC. Fort Madison, IA | 2 | $0 | 2 |
| COMMUNITY BUICK GMC, INC. Waterloo, IA | 5 | $0 | 3 |
| BILLION CHEVROLET GMC Clinton, IA | 1 | $0 | 1 |