| Business | Phone |
| A & M Test Only 409 S Montebello Blvd, Montebello 90640 | (323) 838-0041 |
| Greenwood Test Only 565 S Greenwood Ave # A, Montebello 90640 | (323) 838-8525 |
| Technology Automotive 1200 W Whittier Blvd, Montebello 90640 | (323) 722-7755 |
| Smog Check 5929 E Olympic Blvd, Montebello 90640 | (323) 887-9819 |
| Smog Test Center 1901 W Whittier Blvd, Montebello 90640 | (323) 725-0405 |
| Smog Test Only Center 5929 E Olympic Blvd, Montebello 90640 | (323) 268-5797 |
| Metro Auto Smog 1619 W Whittier Blvd, Montebello 90640 | (323) 722-3336 |