SMOG LeveL 1 Practice teSt actuaL exaM 2026/2027 – cOMPLete
exaM-StyLe QueStiOnS with DetaiLeD ratiOnaLeS | 100% verifieD
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Question 1What model year gasoline vehicles are subject to California's Smog Check
program?
A) 1975 through current model year
B) 1976 through current model year
C) 1976 through 1999 model year
D) 2000 through current model year
**Answer: B) 1976 through current model year**
ratiOnaLe: California's Smog Check program applies to gasoline-powered vehicles from the
1976 model year through the current model year. Vehicles six years old or newer are often
exempt from the biennial requirement but must still participate at the time of initial
registration or transfer of ownership.
**Question 2**
What model year diesel vehicles are subject to California's Smog Check program?
A) 1996 through current model year
B) 1997 through current model year
C) 1998 through current model year
D) 2000 through current model year
**Answer: C) 1998 through current model year**
ratiOnaLe: Diesel-powered vehicles from the 1998 model year through the current model
year are subject to California's Smog Check program, provided they have a Gross Vehicle
Weight Rating (GVWR) of 14,000 lbs or less.
**Question 3**
, During a smog check inspection on a 2005 gasoline hybrid vehicle, Technician A says the
visible idle smoke check can be performed at any time. Technician B says it must be
performed after the OBDII portion. Who is correct?
A) Technician A only
B) Technician B only
C) Both technicians
D) Neither technician
**Answer: D) Neither technician**
ratiOnaLe: The visible smoke test must be performed during the pre-inspection portion of
the smog check, before the OBDII or tailpipe testing begins. Neither technician described the
correct timing.
**Question 4**
The Bureau of Automotive Repair's (BAR) snap throttle visible smoke test is performed on
which vehicles?
A) 1996 and newer vehicles
B) 2000 and newer vehicles
C) All vehicles 1976 and newer
D) Diesel vehicles only
**Answer: C) All vehicles 1976 and newer**
ratiOnaLe: The BAR snap throttle visible smoke test is performed on all gasoline vehicles
from 1976 and newer. The inspector performs a "snap throttle" (quickly opening and closing
the throttle) to observe for excessive exhaust smoke, which indicates internal engine wear or
oil consumption.
**Question 5**
What emissions does the PCV (Positive Crankcase Ventilation) system reduce?
A) NOx
B) CO (Carbon Monoxide)
C) HC (Hydrocarbons)
D) Particulate matter
exaM-StyLe QueStiOnS with DetaiLeD ratiOnaLeS | 100% verifieD
– PaSS GuaranteeD – a+ GraDeD
Question 1What model year gasoline vehicles are subject to California's Smog Check
program?
A) 1975 through current model year
B) 1976 through current model year
C) 1976 through 1999 model year
D) 2000 through current model year
**Answer: B) 1976 through current model year**
ratiOnaLe: California's Smog Check program applies to gasoline-powered vehicles from the
1976 model year through the current model year. Vehicles six years old or newer are often
exempt from the biennial requirement but must still participate at the time of initial
registration or transfer of ownership.
**Question 2**
What model year diesel vehicles are subject to California's Smog Check program?
A) 1996 through current model year
B) 1997 through current model year
C) 1998 through current model year
D) 2000 through current model year
**Answer: C) 1998 through current model year**
ratiOnaLe: Diesel-powered vehicles from the 1998 model year through the current model
year are subject to California's Smog Check program, provided they have a Gross Vehicle
Weight Rating (GVWR) of 14,000 lbs or less.
**Question 3**
, During a smog check inspection on a 2005 gasoline hybrid vehicle, Technician A says the
visible idle smoke check can be performed at any time. Technician B says it must be
performed after the OBDII portion. Who is correct?
A) Technician A only
B) Technician B only
C) Both technicians
D) Neither technician
**Answer: D) Neither technician**
ratiOnaLe: The visible smoke test must be performed during the pre-inspection portion of
the smog check, before the OBDII or tailpipe testing begins. Neither technician described the
correct timing.
**Question 4**
The Bureau of Automotive Repair's (BAR) snap throttle visible smoke test is performed on
which vehicles?
A) 1996 and newer vehicles
B) 2000 and newer vehicles
C) All vehicles 1976 and newer
D) Diesel vehicles only
**Answer: C) All vehicles 1976 and newer**
ratiOnaLe: The BAR snap throttle visible smoke test is performed on all gasoline vehicles
from 1976 and newer. The inspector performs a "snap throttle" (quickly opening and closing
the throttle) to observe for excessive exhaust smoke, which indicates internal engine wear or
oil consumption.
**Question 5**
What emissions does the PCV (Positive Crankcase Ventilation) system reduce?
A) NOx
B) CO (Carbon Monoxide)
C) HC (Hydrocarbons)
D) Particulate matter
