AB 2747 amends Section 9980 of the California Vehicle Code to revise the statutory text that triggers the engine-origin label required when an engine is built by a maker other than the vehicle manufacturer. The bill restructures subsection text, relocates a clause introducing definitions, and restates the test for when the engine-maker is "different" from the vehicle manufacturer, while expressly defining "affiliate" by a control test.
The changes are drafted as technical and nonsubstantive. Practically, the bill should not change who must label a vehicle, but it does tidy the statute in ways that matter for compliance officers, in-house counsel, and regulators who interpret labeling duties under Section 9981 and contracts allocating manufacturer responsibilities.
At a Glance
What It Does
The bill revises Section 9980's structure and wording: it restates the labeling duty (referencing Section 9981), specifies that an engine-maker is "different" when a majority of parts or most of the assembly work comes from another party, and defines "affiliate" using a control-based test. The revisions are characterized as technical and nonsubstantive.
Who It Affects
Original equipment manufacturers, vehicle dealers who display window stickers, compliance and legal teams at OEMs and Tier‑1 suppliers, and state regulators who enforce vehicle-disclosure requirements. It also touches counsel drafting supply or OEM-subcontractor agreements where labeling responsibilities are allocated.
Why It Matters
Even small textual edits shift how agencies and courts read a statute. This bill reduces drafting ambiguity that can complicate compliance programs and vendor contracts, but it does not resolve open questions about how to measure "majority of parts" or "most of the work of assembly."
More articles like this one.
A weekly email with all the latest developments on this topic.
What This Bill Actually Does
AB 2747 does not introduce a new labeling obligation; it repackages the existing rule. Under current law, vehicles whose engine was made by a different manufacturer must carry a prominent label near the sticker that lists the vehicle’s suggested retail price.
This bill keeps that requirement, but adjusts how the provision is written—moving introductory phrases and reformatting the definitions so the statutory test and the affiliate definition read more cleanly.
The revised text restates the core test for when the engine-maker is "different": the engine is treated as coming from another manufacturer if a majority of the engine's parts, or most of the assembly work, are supplied by someone other than the vehicle manufacturer or that manufacturer's subsidiary or affiliate. AB 2747 also supplies an explicit definition of "affiliate" as an entity that directly or indirectly controls, is controlled by, or is under common control with the vehicle manufacturer.Functionally, the bill is intended to reduce drafting confusion rather than change outcomes.
Manufacturers and dealers retain the same practical duties under Section 9981 to display the label; however, the clearer placement of the definitional language may affect how compliance teams document supplier relationships and how regulators assess responsibility. The statute's substantive gaps—how to count "majority of parts," how to quantify "most of the work of assembly," and whether short-term subcontracting changes the analysis—remain unaddressed and will continue to require agency guidance or contract-level allocation.
The Five Things You Need to Know
AB 2747 amends Section 9980 to reaffirm that a vehicle must be labeled under Section 9981 when the engine’s manufacturer differs from the vehicle manufacturer.
The bill restates the "different manufacturer" test to hinge on either a majority of engine parts or most of the engine assembly work coming from another party.
It explicitly treats a vehicle manufacturer’s subsidiaries and affiliates as part of the manufacturer for the purpose of excluding them from being a "different" engine-maker.
AB 2747 inserts a standalone definition of "affiliate" that uses a control-based standard (direct or indirect control, or common control) rather than leaving the term implicit.
The legislative digest and bill text label the edits as technical and nonsubstantive; the measure contains no new enforcement penalties or funding provisions.
Section-by-Section Breakdown
Every bill we cover gets an analysis of its key sections.
Labeling duty (references Section 9981)
This clause reaffirms the existing obligation: when the engine manufacturer differs from the vehicle manufacturer, the vehicle must carry the label required by Section 9981. The practical takeaway is unchanged — dealers still display the window-sticker area and the required notice — but the bill ties the duty back to Section 9981 in a clearer one-sentence formulation that reduces internal cross-referencing ambiguity.
Test for a 'different' engine manufacturer
This provision restates the operative test: an engine-maker is "different" if a majority of parts or most of the assembly work is provided by a person other than the vehicle manufacturer or its subsidiary/affiliate. The text preserves the two alternative metrics (parts or assembly work), leaving open how regulators or courts will quantify those metrics and whether metrics may be used together or must be evaluated separately.
Definition of 'affiliate' by control
The bill adds an explicit definition: an "affiliate" is an entity that directly or indirectly controls, is controlled by, or is under common control with the vehicle manufacturer. That control-based test is standard corporate law language; codifying it here narrows interpretive dispute over whether looser commercial ties count as affiliation, but it still leaves questions about the evidence needed to prove control.
This bill is one of many.
Codify tracks hundreds of bills on Transportation across all five countries.
Explore Transportation in Codify Search →Who Benefits and Who Bears the Cost
Every bill creates winners and losers. Here's who stands to gain and who bears the cost.
Who Benefits
- State regulators — clearer statutory structure reduces interpretive friction when issuing guidance or enforcing labeling obligations.
- OEM compliance and legal teams — the explicit affiliate definition and tidier subsectioning lower the risk of internal disagreement over which corporate entities count as the vehicle manufacturer for labeling purposes.
- Vehicle dealers — maintaining an unchanged labeling duty but with cleaner statute language simplifies dealer communications and checklist items tied to window-sticker displays.
Who Bears the Cost
- Vehicle manufacturers and suppliers — minimal administrative work to align internal compliance protocols and supplier contracts to the clarified statutory language.
- Legal and contracting teams at OEMs and Tier‑1 suppliers — may need to update contract clauses allocating labeling responsibilities to reflect the control-based affiliate definition.
- State agencies (e.g., DMV) — while changes are small, agencies may need to issue interpretive guidance or FAQs, consuming staff time with no new appropriation attached.
Key Issues
The Core Tension
The central tension is between statutory tidy-up and substantive clarity: AB 2747 reduces wording friction and narrows one definitional dispute, but it deliberately avoids answering the harder, substantive measurement questions that drive real-world compliance, enforcement, and litigation.
AB 2747 is primarily editorial: it cleans up phrasing and inserts an express affiliate definition without changing the substantive trigger for labeling. That makes it useful for reducing petty disputes over statutory reading, but it leaves intact the statute’s substantive ambiguities.
The bill does not define how to measure a "majority of parts" (by count, cost, or function), nor does it specify how to quantify "most of the work of assembly" (hours, steps, or project milestones). Those measurement questions can produce real compliance uncertainty and litigation risk if agencies or private plaintiffs adopt divergent tests.
Another implementation issue is the control-based affiliate definition. While common in corporate law, proving "direct or indirect" control can be fact-intensive and may push disputes into discovery over ownership charts, voting agreements, and intercompany contracts.
That could increase transactional complexity for manufacturers that use holding companies or unconventional supply chains. Finally, because the bill is explicit that edits are technical and nonsubstantive, it creates no new enforcement tools or penalties — so any remaining gaps will fall to agency rulemaking, dealer practice, or private contract rather than to legislative fixes.
Try it yourself.
Ask a question in plain English, or pick a topic below. Results in seconds.