The Auto Alliance (AAM) is a defunct trade group of automobile manufacturers that operated in the United States.

It was the leading advocacy group for the auto industry, representing 77% of all car and light truck sales in the United States.

The Auto Alliance was active in the areas of environment, energy and motor vehicle safety.

[4] They also have weighed in on the federal government's new fuel economy and emissions standards proposals calling for other industries to do their part in helping to trim pollution and conserve energy.

In September 2009, the Alliance of Automobile Manufacturers joined the Obama administration and environmentalists in opposing an effort to bar the U.S. Environmental Protection Agency for one year from attempting to regulate green-house-gas emissions for power plants and other large sources, preferring a single nationwide set of rules, a main priority since 2002.