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HB2535 • 2026

vehicle emission standards; energy source

HB2535 - vehicle emission standards; energy source

Energy
Passed Legislature

This bill passed both chambers and reached final enrollment, even if later executive action is not shown here.

Sponsor
Christopher Mathis
Last action
2026-01-21
Official status
House second read
Effective date
Not listed

Plain English Breakdown

The bill specifies that rules apply to 'motor vehicles and combustion engines' but the summary focuses on cars; however, the text explicitly mentions model year standards which typically applies to motor vehicles.

HB2535 - Vehicle Emission Standards and Energy Source

This bill removes an old state law about vehicle emissions and requires Arizona to follow California's emission rules for cars made in model year 2028 or later, but only if the federal government has approved those specific rules.

What This Bill Does

  • Repeals section 28-145 of the Arizona Revised Statutes.
  • Amends section 49-447 to require new vehicle emission standards for model year 2028 or newer vehicles that match California's rules.
  • Limits these rules to only those where the U.S. Environmental Protection Agency has granted a waiver to the California Air Resources Board.
  • Requires state officials to notify leaders when new rules are adopted.

Who It Names or Affects

  • The director responsible for air quality and vehicle emissions in Arizona.
  • Manufacturers of vehicles with model years starting in 2028 or later sold in Arizona.
  • State government leaders including the governor, legislative speakers, president of the senate, director of the legislative council, and secretary of state.

Terms To Know

Clean Air Act
A federal law that allows states to adopt stricter emission rules if they meet certain conditions under section 177.
California Air Resources Board
The state agency in California that sets vehicle pollution standards which Arizona must follow for newer cars.
Waiver
Official permission from the U.S. Environmental Protection Agency allowing a state to use its own rules instead of national ones.

Limits and Unknowns

  • The bill does not list an effective date in the provided text.
  • The specific details of California's emission standards are not included in this document.
  • The exact timeline for when Arizona must adopt these rules is not stated.

Bill History

  1. 2026-01-21 House

    House second read

  2. 2026-01-20 House

    House Rules: None

  3. 2026-01-20 House

    House Transportation & Infrastructure: None

  4. 2026-01-20 House

    House first read

Official Summary Text

HB2535 - vehicle emission standards; energy source

Current Bill Text

Read the full stored bill text
HB2535 - 572R - I Ver

REFERENCE TITLE:
vehicle emission standards; energy source

State of Arizona

House of Representatives

Fifty-seventh Legislature

Second Regular Session

2026

HB 2535

Introduced by

Representative
Mathis

AN
ACT

repealing section 28-145, Arizona Revised
Statutes; amending section 49-447, Arizona Revised Statutes; relating to
vehicles.

(TEXT OF BILL BEGINS ON NEXT PAGE)

Be it enacted by the Legislature of the State of Arizona:

Section 1.
Repeal

Section 28-145, Arizona Revised
Statutes, is repealed.

Sec. 2. Section 49-447, Arizona Revised
Statutes, is amended to read:

START_STATUTE
49-447.

Motor vehicle and combustion engine emission; standards; notice

a.
The director shall adopt
rules setting forth standards controlling the release into the atmosphere of
air contaminants from motor vehicles and combustion engines.
Any rules adopted pursuant to this section shall be consistent with
provisions of federal law, if any, relating to control of emissions from motor
vehicles or combustion engines.
This authority shall apply to
implement
the provisions of
sections 28-955 and 49-542.

B. Notwithstanding any other law and
as provided by section 177 of the clean air act, the director shall adopt rules
to implement vehicle emissions standards for vehicles model year 2028 or newer
that are identical to the standards adopted by the California air resources
board.� the director shall adopt rules to implement only the standards for
which the United States environmental protection agency has granted a waiver to
the California air resources board.

C. On the director's receipt of a
notice of final rulemaking for rules or any amendments to rules adopted
pursuant to this section, the director shall notify in writing the governor,
speaker of the house of representatives, president of the senate, director of
the legislative council and secretary of state of both of the following:

1. The rules adopted or amended.

2. The California air resources board
standards the adopted rule or amendment to the adopted rule implements.
END_STATUTE