| Business | Phone |
| Royal Test Only 1220 Sycamore Dr, Simi Valley 93065 | (805) 526-0069 |
| See-Me Smog Test Only Center 2383 Sycamore Dr, Simi Valley 93065 | (805) 520-0811 |
| Simi Smog 2340 Kuehner Dr, Simi Valley 93063 | (805) 527-8909 |
| Simi Test Only Smog Center 1806 E Los Angeles Ave, Simi Valley 93065 | (805) 584-2929 |
| Smog Check 185 E Easy St # D, Simi Valley 93065 | (805) 577-7776 |
| West Valley Smog 1880 Sinaloa Rd, Simi Valley 93065 | (805) 581-0408 |
| Valley Smog Test Only Center 2180 1st St # C9, Simi Valley 93065 | (805) 579-1579 |