Lafayette's Premier Star Certified, Test Only Smog Shop

service

Value

integrity

Call us today to schedule an appointment (925) 284-1988

Walk-ins Welcome

Diablo Smog is family-owned and operated with focus on customer service and giving back to the community.


We are a premier Star Certified and licensed Smog Test Only Station servicing Lafayette - Walnut Creek - Orinda - Moraga - Pleasant Hill.


We accept competitor's coupons and offer discounts to:

  • Seniors
  • Retired Military
  • Active Military
  • Fire Fighters
  • Police Officers
  • Emergency Responders

FREE RETEST Worried that your vehicle might not pass your smog inspection?


No, need to worry! 


If your vehicle fails it's smog test, we will provide a free retest within 60 days.


(The original smog test must have been conducted at our shop and the $8.25 certificate fee is due upon completion.)

At Diablo Smog we can test the following:

  • All Passenger Cars
  • Minivans
  • Trucks
  • Luxury Vehicles
  • Classic / Vintage Vehicles
  • Diesel Vehicles
  • Hybrid Vehicles


We test vehicles directed to:

  • Test-Only smog shops
  • Annual Smog Checks and Renewal Notices
  • Change of ownership
  • Out-of-State Vehicles


Smog Emission Test Certificate is automatically transmitted to DMV.