Smog check stations are under scrutiny after a study by the California Air Resources Board found extensive fraud among smog check results in the state.
Between 2000 and 2006, the California Highway Patrol and the Bureau of Automotive Repair randomly inspected 6,000 older cars that had been cleared by smog check centers within the past year. The inspections found 19 percent of cars failed in the roadside test; upon closer inspection, the number of failures shot up to 31 percent.
According to the Los Angeles Times, before June, 2009, only one or two stations were cited for fraud each year. Since then, licenses at 22 testing stations have been suspended, and 17 owners face criminal prosecution. The ARB’s study recommends tighter restrictions on smog check stations, and a bill introduced to the state legislature this week would also increase regulation.



I sometime how many % of cars that are less than 10 years old will actually fail a smog check. Cars should be check every 5 instead of 2.