Stellantis Media Site Stellantis Proving Grounds                                                Contact:                                                             Jodi                         Tinson                                                                                                Eric                         Mayne                                                                                                                                                                                   Stellantis Proving Grounds                                                                                     Chelsea Proving Grounds3700 S Mi State Rd 52, Chelsea, Michigan, United States Acreage: 4,000 acres Road Surface: 100 lane miles Employment: 481 employeesSite Background:  The Chelsea Proving Grounds, located about 70 miles from the FCA US headquarters in Auburn Hills, Michigan, opened in 1954. With most of the facility operating 24 hours a day, 365 days a year, it conducts 85 percent of vehicle testing scenarios including impact barrier tests; safety sled; emissions build and testing; emissions development and certification; powertrain calibration; performance and fuel economy; corrosion tests; and brake systems development and certification.The Company announced in September 2018 that it has invested more than $30 million at the facility to further development and testing of autonomous vehicle and advanced safety technologies. The all-new facility features a dedicated autonomous highway-speed track, 35-acre safety-feature evaluation area and a high-tech command center.  (Updated: January 2025)