Efficient Vehicle Leadership Act of 2009 - Amends the Internal Revenue Code to: (1) allow a new income tax credit for certain fuel-efficient motor vehicles with a purchase price not exceeding $50,000, beginning with model year 2011; (2) allow such credit as an offset against the alternative minimum tax (AMT); and (3) revise the gas guzzler excise tax to impose an increased tax on fuel guzzler motor vehicles, beginning with model year 2013, based on specified fuel efficiency ratings.