Toyota Motor Manufacturing, Indiana (TMMI) uses high-tech manufacturing systems to assemble some of the most technologically advanced vehicles on the road today. TMMI has assembled more than 6 million vehicles — and counting. Since the plant’s groundbreaking in 1996, Toyota has invested $6.6 billion to make high-quality vehicles through smarter, flexible manufacturing and innovation. For instance, at TMMI employees work in tandem with robots to help increase efficiency. It’s not uncommon to see an employee donning an exoskeleton — like a harness — to get a boost and some support when working on a task that’s elevated. Employees also program the robots to perform various operations, including welding car body panels and painting bumper covers.
Facts and Figures

Manufacturing Plant
Vehicles
1996
Groundbreaking
351,072
Units Assembled in 2022
7,200+
Jobs Created
- First Vehicle (Tundra): Dec. 10, 1998
- Products: Grand Highlander (on-sale date to be announced later this summer), Highlander, Highlander Hybrid, and Sienna Hybrid
- Operations: Vehicle production (stamping, body weld, paint and assembly)
- Annual Payroll: $560 million
- Location: Princeton, Indiana
- Plant Site: 1,160 acres in Gibson County
- Plant Size: 4.5 million square feet (roughly 80 football fields under roof)
- Investment: $6.6 billion
- Highlander midsize SUV: 78,667 units
- Highlander Hybrid midsize SUV: 78,667 units
- Sienna minivan: 32,140 units
- Sienna Hybrid minivan: 127,270 units
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Milestones:
Millions of Celebrations
- 25 Years in Princeton, Indiana
- All-new, all-hybrid 2021 Sienna Line-off
- 4T Academy inaugural class graduation
- 30 millionth U.S. vehicle—a Sienna (Feb. 2021)
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Exports:
75,377 total vehicles exported in 2021
- Highlander (14%)
- Highlander Hybrid (26%)
- Sequoia (11%)
- Sienna (19%)
- 45 countries & territories
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2021 Community Involvement:
- $1.7 million donated to area nonprofits
- 65 local organizations impacted