California Smog Check Inspector Exam
Complete Study Guide 2026/2027 100 Verified
Questions with Answers & Detailed Rationales
BAR-Aligned
Updated for 2026/2027 Exam Cycle
SECTION 1: PROGRAM SCOPE & VEHICLE
APPLICABILITY
1. What model year gasoline vehicles are subject to California's
Smog Check program?
A) 1968 through current model year
B) 1976 through current model year
C) 1980 through current model year
D) 1990 through current model year
Answer: B) 1976 through current model year
Rationale: BAR regulations specify that gasoline-powered vehicles
from the 1976 model year through the current model year are subject
to the Smog Check program. 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.
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 with a GVWR of 14,000 lbs or
less
D) 2000 through current model year
Answer: C) 1998 through current model year with a GVWR of
14,000 lbs or less
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. Diesel vehicles with GVWR of 14,001
lbs or more are exempted until further notice.
3. What are the names of the three main inspection program
areas in California?
A) Urban, Suburban, Rural
B) Enhanced, Basic, and Change of Ownership
C) Northern, Central, Southern
D) Level 1, Level 2, Level 3
Answer: B) Enhanced, Basic, and Change of Ownership
Rationale: The three main inspection program areas
are: Enhanced (highly populated regions with more stringent testing
and loaded-mode emissions tests for 1976-1999 MY gasoline
vehicles), Basic (regions with lower pollution levels requiring
biennial smog inspections), and Change of Ownership (generally
rural areas where smog checks are only required when a vehicle is
sold or registered in California for the first time).
,4. How many licensed smog technicians must be present at a smog
check station during operating hours?
A) At least two technicians at all times
B) At least one licensed inspector or repair technician
C) At least one technician regardless of license status
D) No requirement for technician presence
Answer: B) At least one licensed inspector or repair technician
Rationale: At least one licensed inspector or repair technician must
be present at the station during all hours the station is open for
business. This ensures that all inspections are performed by qualified
personnel.
5. Which of the following vehicles is exempt from California's
Smog Check program?
A) 1976 gasoline-powered vehicle
B) 1998 diesel vehicle with GVWR of 12,000 lbs
C) 1975 gasoline-powered passenger car
D) 2000 gasoline-powered vehicle
Answer: C) 1975 gasoline-powered passenger car
Rationale: California smog exemption applies to 1975 and older
gasoline vehicles. The rolling 30-year exemption ended in 2005; the
exemption is now fixed at 1975 and older.
, 6. What vehicle identification label must be affixed to a specially
constructed vehicle (SPCN) for a test-only or test-and-repair
station to inspect it?
A) Manufacturer's original VIN label
B) BAR Referee label
C) EPA compliance label
D) DMV registration sticker
Answer: B) BAR Referee label
Rationale: A BAR Referee label must be affixed to a specially
constructed vehicle (SPCN) for a test-only or test-and-repair station to
inspect it. The initial smog certification for a newly constructed SPCN
must be performed by a BAR Referee Center.
7. May a test and repair station sublet a smog check inspection to
a test only station?
A) Yes, under any circumstances
B) Yes, but only with BAR approval
C) No
D) Yes, for hybrid vehicles only
Answer: C) No
Rationale: A test and repair station may not sublet a smog check
inspection to a test only station. Each station must perform its own
inspections.
Complete Study Guide 2026/2027 100 Verified
Questions with Answers & Detailed Rationales
BAR-Aligned
Updated for 2026/2027 Exam Cycle
SECTION 1: PROGRAM SCOPE & VEHICLE
APPLICABILITY
1. What model year gasoline vehicles are subject to California's
Smog Check program?
A) 1968 through current model year
B) 1976 through current model year
C) 1980 through current model year
D) 1990 through current model year
Answer: B) 1976 through current model year
Rationale: BAR regulations specify that gasoline-powered vehicles
from the 1976 model year through the current model year are subject
to the Smog Check program. 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.
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 with a GVWR of 14,000 lbs or
less
D) 2000 through current model year
Answer: C) 1998 through current model year with a GVWR of
14,000 lbs or less
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. Diesel vehicles with GVWR of 14,001
lbs or more are exempted until further notice.
3. What are the names of the three main inspection program
areas in California?
A) Urban, Suburban, Rural
B) Enhanced, Basic, and Change of Ownership
C) Northern, Central, Southern
D) Level 1, Level 2, Level 3
Answer: B) Enhanced, Basic, and Change of Ownership
Rationale: The three main inspection program areas
are: Enhanced (highly populated regions with more stringent testing
and loaded-mode emissions tests for 1976-1999 MY gasoline
vehicles), Basic (regions with lower pollution levels requiring
biennial smog inspections), and Change of Ownership (generally
rural areas where smog checks are only required when a vehicle is
sold or registered in California for the first time).
,4. How many licensed smog technicians must be present at a smog
check station during operating hours?
A) At least two technicians at all times
B) At least one licensed inspector or repair technician
C) At least one technician regardless of license status
D) No requirement for technician presence
Answer: B) At least one licensed inspector or repair technician
Rationale: At least one licensed inspector or repair technician must
be present at the station during all hours the station is open for
business. This ensures that all inspections are performed by qualified
personnel.
5. Which of the following vehicles is exempt from California's
Smog Check program?
A) 1976 gasoline-powered vehicle
B) 1998 diesel vehicle with GVWR of 12,000 lbs
C) 1975 gasoline-powered passenger car
D) 2000 gasoline-powered vehicle
Answer: C) 1975 gasoline-powered passenger car
Rationale: California smog exemption applies to 1975 and older
gasoline vehicles. The rolling 30-year exemption ended in 2005; the
exemption is now fixed at 1975 and older.
, 6. What vehicle identification label must be affixed to a specially
constructed vehicle (SPCN) for a test-only or test-and-repair
station to inspect it?
A) Manufacturer's original VIN label
B) BAR Referee label
C) EPA compliance label
D) DMV registration sticker
Answer: B) BAR Referee label
Rationale: A BAR Referee label must be affixed to a specially
constructed vehicle (SPCN) for a test-only or test-and-repair station to
inspect it. The initial smog certification for a newly constructed SPCN
must be performed by a BAR Referee Center.
7. May a test and repair station sublet a smog check inspection to
a test only station?
A) Yes, under any circumstances
B) Yes, but only with BAR approval
C) No
D) Yes, for hybrid vehicles only
Answer: C) No
Rationale: A test and repair station may not sublet a smog check
inspection to a test only station. Each station must perform its own
inspections.
