WELCOME to the Discount Smog Check Centers.

We are a family owned & operated company that offers fast, friendly, & professional service at very reasonable & competitive prices. We have extended hours and are open on the weekends to accommodate our customers that cannot make it during the week.

We accept multiple forms of payment: Visa, Master card, Discover, Debit, Checks, & Cash  also in our San Ramon location we accept the 76 cards.

• Fast, Friendly & Professional service.
• No appointment needed
  
• 15 minutes per smog
  

What we test for.

• Smog renewals
  
• Test only directed
  
• Out of State
  
• Gross polluters
  
• Change of ownership
• Now Testing Diesels