California’s clean-car rules remain vital but vulnerable under Trump

01The Story新闻事实

The Trump administration has dismantled or weakened federal vehicle-emissions policies, leaving California as the most influential remaining U.S. regulator of car pollution. California’s rules still apply, and 19 other jurisdictions have adopted them, but the administration is challenging the state’s authority in Congress and court. Automakers also face uncertainty as consumer demand shifts toward hybrids and fuel-efficient vehicles.特朗普政府已削弱或取消多项联邦汽车排放政策，使加州成为美国仍具最大影响力的汽车污染监管者。加州法规目前仍然有效，另有19个州及哥伦比亚特区采用相关标准，但政府正通过国会和法院挑战加州的监管权限。与此同时，随着消费者转向混合动力和高燃油效率车辆，汽车制造商也面临政策与市场需求的不确定性。

Cars account for roughly 16 percent of U.S. greenhouse gas emissions.汽车约占美国温室气体排放量的16%。
California has special authority to set vehicle-emissions standards that go beyond federal rules.加州拥有制定严于联邦规定的汽车排放标准的特殊权限。
Nineteen states, including the District of Columbia, have adopted California’s vehicle-emissions standards.包括哥伦比亚特区在内的19个州采用了加州的汽车排放标准。
Jurisdictions using California’s current standards represented 40 percent of U.S. new-car sales in 2022.采用加州现行汽车标准的辖区在2022年占美国新车销量的40%。
A federal judge blocked the Trump administration’s effort to send California’s existing vehicle-emissions rules to Congress in early September.9月初，一名联邦法官阻止了特朗普政府将加州现行汽车排放法规提交国会推翻的努力。
Hybrids made up a record 16 percent of passenger-vehicle sales by summer 2026.截至2026年夏季，混合动力汽车占乘用车销量的比例创纪录地达到16%。

With federal vehicle-climate regulation largely weakened, California’s legal authority has become the main remaining policy lever shaping U.S. automaker emissions decisions.随着联邦汽车气候监管大幅削弱，加州的法定监管权限已成为影响美国汽车制造商排放决策的主要政策杠杆。

023 Dimensions维度分析

Stakeholder impact利益相关方

A state rule with national reach具有全国影响力的州级法规

California cannot directly mandate fuel efficiency under its special authority, but tailpipe-emissions rules can have a similar effect for gasoline vehicles. Other jurisdictions and automakers extend the practical reach of those standards beyond California.加州不能依据其特殊权限直接规定燃油效率，但尾气排放法规对汽油车可以产生类似效果。其他辖区和汽车制造商进一步扩大了这些标准在加州之外的实际影响。

Jurisdictions adopting California standards采用加州标准的辖区

Current rules现行法规19 jurisdictions

20222022年40 %

Car companies have often been willing to make all vehicles comply with California’s standards rather than produce different vehicles for different states.汽车公司通常愿意让所有车辆符合加州标准，而不是针对不同州生产不同车型。

Contradiction矛盾之处

Federal retreat, state-level legal contest联邦监管退却与州级法律争夺

The administration has eased federal fuel-efficiency requirements and sought to overturn California’s rules. California’s previous standards remain enforceable for now, but their durability depends on ongoing congressional and court challenges.特朗普政府已放宽联邦燃油效率要求，并试图推翻加州法规。加州此前的标准目前仍可执行，但其能否持续取决于国会行动和持续进行的司法争议。

Congress voted last year to block California’s effort to phase out gas-powered cars by 2035.国会去年投票阻止了加州到2035年逐步淘汰燃油车的努力。
The Trump administration asked Congress to overturn California’s previous emissions standards, which would otherwise have expired in 2026.特朗普政府要求国会推翻加州此前的排放标准；若无此举，这些标准原本将在2026年到期。
A federal judge blocked that effort in early September.一名联邦法官在9月初阻止了这一努力。

Future signal前瞻信号

Policy uncertainty meets changing demand政策不确定性叠加需求变化

Automakers are balancing shifting regulations with uneven consumer demand for electric vehicles. Higher gasoline prices and rising hybrid sales could still encourage greater fuel efficiency even without stronger federal requirements.汽车制造商正在同时应对不断变化的法规和不均衡的电动汽车消费需求。即使联邦要求减弱，汽油价格上涨和混合动力汽车销量增加仍可能推动更高的燃油效率。

Hybrid share of passenger-vehicle sales混合动力汽车占乘用车销量比例

16 %16%

Summer 20262026年夏季

Automakers said aggressive Biden-era fuel-efficiency standards conflicted with Americans’ preferences and that customers were not buying enough electric vehicles.汽车制造商表示，拜登时期严格的燃油效率标准与美国消费者偏好存在冲突，消费者购买的电动汽车数量也不足。
Some companies continue their electric-vehicle efforts, while executives expect zero-emission cars may eventually gain momentum in the United States.一些公司仍在继续推进电动汽车业务，部分高管认为零排放汽车最终可能在美国获得更大动能。

03Timeline时间线

2025 Both houses of Congress voted to block California’s effort to phase out gas-powered cars by 2035.国会参众两院投票阻止加州到2035年逐步淘汰燃油车的努力。
2026-09 A federal judge blocked the administration’s effort to send California’s previous vehicle-emissions standards to Congress for repeal.一名联邦法官阻止政府将加州此前的汽车排放标准提交国会废除。
2026 The administration announced a final plan to ease federal fuel-efficiency requirements, while California’s previous standards remained in effect.政府宣布最终计划放宽联邦燃油效率要求，而加州此前的标准仍然有效。

Key takeaway核心结论

California remains the central U.S. counterweight to federal retreat on vehicle emissions, but its influence is exposed to legal challenges and shifting automobile demand.在联邦政府退出汽车排放监管之际，加州仍是美国最主要的制衡力量，但其影响力正面临法律挑战和汽车需求变化的双重影响。

04What to Watch后续关注

Whether Congress or the courts ultimately remove or preserve California’s authority to enforce its vehicle-emissions standards.国会或法院最终会否取消或保留加州执行汽车排放标准的权限。
Whether automakers continue meeting California-linked standards despite the federal rollback.尽管联邦政策回撤，汽车制造商是否继续满足与加州相关的标准。
Whether higher gasoline prices and rising hybrid sales increase demand for fuel-efficient vehicles.汽油价格上涨和混合动力汽车销量增加是否会推动燃油高效车型需求上升。
Whether electric-vehicle adoption regains momentum in the United States after policy support was reduced.在政策支持减少后，电动汽车在美国能否重新获得增长动力。

05Uncertainties不确定因素

The article does not establish whether courts will allow California to restore its rescinded vehicle-transition requirements.文章没有说明法院是否会允许加州恢复已被撤销的汽车转型要求。
Automakers have not publicly settled how they will respond to the regulatory uncertainty.汽车制造商尚未公开确定将如何应对监管不确定性。
It remains unclear whether consumer demand will favor electric vehicles, hybrids, or other fuel-efficient models over time.消费者需求未来将更偏向电动汽车、混合动力汽车还是其他高燃油效率车型，仍不明确。

06Sources信息来源

Under Trump, California's clean car rules are essential — and vulnerable | GristUnder Trump, California's clean car rules are essential — and vulnerable | Grist Grist · 2026-10-01

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