car1AESI is focused on educating and communicating with key policymakers regarding the enormous economic and health benefits created by our industry to date – as well as the potential to expand on these accomplishments in the future through research and innovation.

The industry faces many challenges to the programs and regulations that drive our market. Those challenges threaten to stagnate or erode market opportunities and turn back the clock on years of steady progress in improving air quality and reducing the pollution footprint of each vehicle.

We help move the nation forward by designing, engineering and producing technologies, in collaboration with our customers, that optimize and reduce pollution from internal combustion engine systems.

We provide our members with information, and communicate with their customers, regarding political and policy trends shaping today’s and future market opportunities for vehicle efficiency and emission control technologies.

Tier 3

EPA has finalized a rule to further reduce sulfur in gasoline and tighten vehicle emissions of NOx, VOCs, PM2.5, CO & toxics.

Mid-term Review

The EPA and the National Highway Traffic Safety Administration (NHTSA) have begun a review of the technologies that could help automakers achieve greenhouse gas emissions and fuel efficiency standards for model years 2022 and later.

Market Opportunities

AESI works with MECA and many other organizations on issues of concern, to track technologies and to help create market opportunities. We follow Federal and State conventional and greenhouse gas regulations and issues affecting vehicles and engines like aftermarket converters, new heavy duty rules on carbon, and more.

Please contact us if you have questions, requests or want to discuss issues.

2200 Wilson Boulevard, Suite 310, Arlington, VA 22201
[contact-form-7 id=”364″ title=”Contact form 1″]


The best clean tech is priced within reach.
Really. Less than the audio
system in most cars.


Technology has to perform effectively
at every stage to consistently succeed.
Ours does.

Advanced Engine Systems Institute is a trade association of highly focused manufacturers. We help move the nation forward by designing, engineering and producing technologies to optimize and reduce pollution from internal combustion engine systems. Our industry has 62 companies with 323 facilities in 39 states maintaining America’s global leadership.

The final Tier 3 rule takes a comprehensive approach, considering the vehicle and its fuel as an integrated system, aimed at addressing the impacts of motor vehicles on air quality and public health. The program sets new vehicle emissions standards and lowers the sulfur content of gasoline beginning in 2017. These standards will reduce both tailpipe and evaporative emissions from passenger cars, light-duty trucks, medium-duty passenger vehicles, and some heavy-duty vehicles. Removing more sulfur from gasoline allows vehicles’ catalysts to work more efficiently and will facilitate the development of some lower-cost technologies to improve fuel economy, reducing gasoline consumption and saving consumers money. -EPA


Over 158 million Americans are currently experiencing unhealthy levels of air pollution which are linked with adverse health impacts such as hospital admissions, emergency room visits, and premature mortality. Motor vehicles are a particularly important source of exposure to air pollution, especially in urban areas.

Compared to the previous standards, the final Tier 3 standards for light-duty vehicles for non-methane organic gases (NMOG) and nitrogen oxides (NOX), presented as NMOG+NOX, represent approximately an 80% reduction from today’s fleet average and a 70% reduction in per-vehicle particulate matter (PM) standards. The heavy-duty tailpipe standardsin the final rule represent about a 60% reduction in both fleet average NMOG+NOX and per-vehicle PM standards.

Tier 3 is among the most highly cost-effective air quality control measures available.
The program would cost about a penny per gallon of gasoline, and about $72 per vehicle. The annual cost of the overall program in 2030 would be approximately $1.7 billion; however, EPA estimates that in 2030, the annual monetized health benefits of the proposed Tier 3 standards would be between $6.7 and $19 billion.

By 2030, the Tier 3 standards would annually prevent:

  • Between 770 and 2,000 premature deaths
  • 2,200 hospital admissions and asthma-related emergency room visits
  • 19,000 asthma exacerbations
  • 30,000 upper and lower respiratory symptoms in children
  • 1.4 million lost school days, work days and minor-restricted activities
The Tier 3 program is a comprehensive approach to reducing the impacts of motor vehicles on air quality and public health.
The Tier 3 program is harmonized with the California Air Resources Board (CARB) Low Emission Vehicle (LEV III) program so automakers could sell the same vehicles in all 50 states.

The Tier 3 rule aligned with and designed to be implemented over the same timeframe as EPA’s program for reducing greenhouse gas (GHG) emissions from light-duty vehicles starting in model year 2017.

Together, the Tier 3, light-duty GHG, and LEV III standards will maximize reductions in GHGs, criteria pollutants and air toxics from motor vehicles while streamlining programs and providing regulatory certainty and compliance efficiency.

[onepage_clients display=”random”]