| Business | Phone |
| Al's Auto Smog 775 W Rialto Ave # D, Rialto 92376 | (909) 874-8311 |
| All About Smog 363 W Valley Blvd # A, Rialto 92376 | (909) 874-5225 |
| Hector's Smog Check 1260 N Fitzgerald Ave, Rialto 92376 | (909) 873-2873 |
| Pro Stop Auto Center 725 W Rialto Ave, Rialto 92376 | (909) 820-6963 |
| Smog Shop 755 W Rialto Ave, Rialto 92376 | (909) 877-3718 |
| Smog Wizer 363 W Valley Blvd, Rialto 92376 | (909) 873-8999 |