Will my car pass the smog test? By Vehicle Model Year
1) Updated for 2025 data
2) Over 45,000 smogs analyzed
2) Over 45,000 smogs analyzed
What are the chances my vehicle will pass the smog test?
On an average; across our locations, the pass rate is 88%. However, the age of a vehicle is one of the key determining factors of whether or not a vehicle passes the smog test. We analyzed our entire 2025 data; with over 45,000 vehicles - and the table below are our findings on Pass/Fail by age of the vehicle.
I have a car with over 100,000 miles on it. Will I pass the smog check?
Fun Fact - the vehicle data we analyzed, collectively represents nearly 6 Billion miles driven! The average miles driven by a vehicle that we smog is ~ 130,000. To answer the above question, your vehicle with over 100,000 miles is the norm; and note again, our overall pass rate is 88%.
Furthermore, key takeaways:
a) Model years 2010s and 2020s pass an average over 90% of the times
b) Model years 2000s pass an average over 80% of the times
c) Model years 1999 and older pass an average over 70% of the times
Furthermore, key takeaways:
a) Model years 2010s and 2020s pass an average over 90% of the times
b) Model years 2000s pass an average over 80% of the times
c) Model years 1999 and older pass an average over 70% of the times
Smog Check Pass or Fail Rate by Age of Vehicle
Smog Check Pass or Fail Rate by Age of Vehicle
For further information on what to expect at your smog center visit, smog check procedures and the industry in general, please feel free to checkout our FAQs, Star Smog Station and Smog Certificate pages.