Directly from the California Health and Safety Code:
44011. (a) All motor vehicles powered by internal combustion
engines that are registered within an area designated for program
coverage shall be required biennially to obtain a certificate of
compliance or noncompliance, except for all of the following:
(1) Every motorcycle, and every diesel-powered vehicle, until the
department, pursuant to Section 44012, implements test procedures
applicable to motorcycles or to diesel-powered vehicles, or both.
(2) Any motor vehicle that has been issued a certificate of
compliance or noncompliance or a repair cost waiver upon a change of
ownership or initial registration in this state during the preceding
six months.
(3) (A) Prior to January 1, 2003, any motor vehicle manufactured
prior to the 1974 model-year.
( Beginning January 1, 2003, any motor vehicle that is 30 or
more model-years old.
(4) (A) Any motor vehicle four or less model-years old.
( The department, by regulation, may increase the exemption
provided by this paragraph to include any motor vehicle up to six or
less model-years old.
C) Any motor vehicle excepted by this paragraph shall be subject
to testing and to certification requirements as determined by the
department, if any of the following apply:
(i) The department determines through remote sensing activities or
other means that there is a substantial probability that the vehicle
has a tampered emission control system or would fail for other cause
a smog check test as specified in Section 44012.
(ii) The vehicle was previously registered outside this state and
is undergoing initial registration in this state.
(iii) The vehicle is being registered as a specially constructed
vehicle.
(iv) The vehicle has been selected for testing pursuant to Section
44014.7 or any other provision of this chapter authorizing
out-of-cycle testing.
(5) In addition to the vehicles exempted pursuant to paragraph
(4), any motor vehicle or class of motor vehicles exempted pursuant
to subdivision ( of Section 44024.5. It is the intent of the
Legislature that the department, pursuant to the authority granted by
this paragraph, exempt at least 15 percent of the lowest emitting
motor vehicles from the biennial smog check inspection.
(6) Any motor vehicle that the department determines would present
prohibitive inspection or repair problems.
(7) Any vehicle registered to the owner of a fleet licensed
pursuant to Section 44020 if the vehicle is garaged exclusively
outside the area included in program coverage, and is not primarily
operated inside the area included in program coverage.
( Vehicles designated for program coverage in enhanced areas
shall be required to obtain inspections from appropriate smog check
stations operating in enhanced areas.
Tim