Toyota said it will expand the Arizona Proving Grounds and invest more than $50 million to enhance vehicle testing at the facility in Wittmann.

Toyota established the Arizona Proving Grounds in 1993, and it has been home to testing more than 50 Toyota and Lexus vehicles for the North American market since that time.

Toyota Affirms Commitment to Arizona Proving Grounds with New Investment Toyota Affirms Commitment to Arizona Proving Grounds with New Investment PR Newswire WITTMANN, Ariz., July 2, 2025 More ...

Toyota says its adding more car testing and development capabilities to its Arizona Proving Grounds site in Wittman.

WITTMANN, Ariz., July 2, 2025 /PRNewswire/ -- Toyota Motor North America (Toyota) announced today that it has allocated and broken ground on more than $50 million in construction of new amenities for ...