| Business | Phone |
| A M Auto Repair 486 A St, Hayward 94541 | (510) 888-9822 |
| Hayward Smog Test Center 2440 Whipple Rd, Hayward 94544 | (510) 429-9198 |
| Just Smog 909 W A St # C, Hayward 94541 | (510) 293-9801 |
| Quik Smog 22328 Mission Blvd, Hayward 94541 | (510) 885-1001 |