Larry Thompson, the former deputy U.S. attorney general and Atlanta lawyer who is the independent compliance auditor for the settlement of Volkswagen’s cheating on environmental tests, is demanding more transparency from the company.

Thompson’s comments came in his first annual report on how the automaker is complying with a $1.45 billion settlement of civil claims with the U.S. government. Thompson, known as the “ICA” in the matter, was a King & Spalding partner, Atlanta U.S. attorney and deputy U.S. attorney general during the George W. Bush administration before serving as senior vice president and general counsel at PepsiCo.