Audi is early in the stages of building a supplier network for the plant, but Stadler said it will benefit from Volkswagen Group's new engine plant in Silao, Mexico. That plant builds the EA888 family of engines, including a 2.0-liter turbocharged gasoline engine -- similar to the one used in the current Q5.
Stadler also said the opening of the Mexican plant does not close the door on the brand some day building vehicles in the United States. "That's absolutely open in the future because it always depends what car do you discuss, where is the main market and is the framework the right one," he said.
Audi parent Volkswagen Group builds the VW Passat sedan at its plant in Chattanooga, Tennessee. Audi has no production in the United States.
Reuters and Bloomberg contributed to this report