National Vehicle and Fuel Emissions Laboratory

What We Do The National Vehicle and Fuel Emissions Laboratory (NVFEL), located in Ann Arbor, Michigan, is an integral part of the Office of Transportation and Air Quality (OTAQ). NVFEL is a state of the art facility that provides emission testing services for motor vehicle, heavy-duty engine, and nonroad engine programs in support of rulemakings, enforcement actions, and test procedures development. Testing activities include: - certifying that vehicles and engines meet federal emissions and fuel economy standards - testing engines for in-use compliance - analyzing fuels, fuel additives, and exhaust compounds. NVFEL develops, designs, and fabricates new and cost-effective technologies and components to reduce vehicle or engine emissions and increase fuel efficiency. NVFEL holds over 60 patents on advanced technologies.