Improvements strengthen Toyota’s North American R&D capabilities
Vehicle development and testing facility available for third-party rentals and long-term residencies
WITTMANN, Ariz. (Dec. 10, 2025) – Toyota Motor North America (Toyota) today celebrated the completion of new construction and updated offerings at its Arizona Proving Ground. Joined by local government officials during an event, Toyota leaders revealed the enhancements for vehicle and automotive technology testing and development.
“We are proud to strengthen the offerings at our world-class facility in Arizona, not only for Toyota, but for any company that has use for these amenities,” said Monte Kaehr, group vice president of Vehicle Development Engineering at Toyota Motor North America’s Research and Development.
The updates are part of a previously announced investment featuring an all-new 5.5-mile oval track that was constructed inside the existing 10-mile oval and uses part of its south straightaway. The new oval is available for vehicle mileage accumulation, stop-and-go testing, and various dynamics and higher speed evaluations. The north straightaway of the original oval has been rebuilt into a new dog bone straight course for various vehicle and advanced driver assistance system (ADAS) evaluations, while also incorporating a world-class 1.75-mile coast down surface to evaluate vehicle efficiency and fuel economy. Significant new off-road test facilities offer greater development area for body-on-frame and off-road capable vehicles while an all-new noise pass-by area allows for testing and evaluation of vehicle sound emissions to help meet global regulations.
Other refreshes include an improved 1.5-mile ride and handling track used for engineering vehicle performance, tire evaluation and wet testing, and an upcoming repaving of the vehicle dynamics pad.
“TAPG is an important asset for our North American R&D team, and we are planning continued investment here as vehicle development needs change and evolve for new technology. Opening our facility to the industry has allowed us to offset the cost of improvements and make an ever-better facility both for ourselves and for the automotive and mobility industry overall” said Stefan Young, vice president at Toyota Motor North America’s Research and Development. “These improvements are also important to attract other companies to the region.”
Since 2021, Toyota Arizona Proving Ground has been available for rental and long-term residencies to third parties seeking closed-course vehicle testing resources. Intertek Transportation Technologies manages and operates the facility under the moniker Arizona Mobility Test Center.
“Arizona is driving innovation that delivers economic opportunity and growth to families and businesses across our state,” said Governor Katie Hobbs. “The revitalization of Toyota’s Arizona Proving Ground is further proof that Arizona is leading the way in auto technology testing and development.”
“I thank Toyota for its continued investment in our state,” said Leo Biasiucci, Arizona State House Representative and Chairman of the house’s Transportation and Infrastructure Committee. “We value this ongoing commitment to bring innovation and technology development to Arizona.”
AMTC at TAPG is located in the Sonoran Desert near Wittmann, Arizona, a town about 60 miles northwest of Phoenix. The facility covers approximately 11,650 acres and has 77 miles of testing surfaces with 60 miles of paved roads, more than 50 miles of off-road and dirt tracks and a 5.5-mile oval track. Toyota established the Arizona Proving Ground in 1993, and it has been home to testing more than 50 Toyota and Lexus vehicles for the North American market since that time.
About Toyota
Toyota (NYSE:TM) has been a part of the cultural fabric in North America for nearly 70 years, and is committed to advancing sustainable, next-generation mobility through our Toyota and Lexus brands, plus our more than 1,800 dealerships.
Toyota directly employs nearly 64,000 people in North America who have contributed to the design, engineering, and assembly of nearly 49 million cars and trucks at our 14 manufacturing plants. In 2025, Toyota’s plant in North Carolina began to assemble automotive batteries for electrified vehicles.
For more information about Toyota, visit www.ToyotaNewsroom.com.
Toyota Research & Development
For more than 50 years, Toyota’s Research & Development groups in North America have participated in engineering projects for several of the best-selling Toyota vehicles on U.S. roads. Teams are now creating both next-generation vehicles and new and advanced mobility concepts that can better move people, goods and information. Toyota’s innovation has secured more patents from the United States Patent and Trademark Office than any other automaker for the past 11 consecutive years (2,428 in 2024). Centered in Ann Arbor, Michigan, Toyota’s North American R&D groups are pursuing Toyota’s mission to “Produce Happiness for All” by making life safer, easier and more enjoyable. Globally, Toyota R&D ensures that the company rapidly and continuously develops cutting-edge, high-quality, and appealing vehicles.
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