Tesla Becomes Highest-Valued US Automaker in History. On Jan. 7, Tesla’s market value surpassed $85 billion, making it the highest-valued automaker in the United States. The record was previously set by Ford in 1999 when it had an $80.8 billion market value. . Tesla’s stock continued to rise more than four percent on Jan. 8, increasing its market value to $89 billion. That’s $2 billion more than the current market values of Ford and General Motors combined, who sit at $37 billion and $50 billion, respectively. . Tesla’s stock rally is believed to be thanks to their recent announcement that 367,500 vehicles were delivered in 2019. . In terms of non-U.S. automakers, Tesla has yet to overtake Japan’s Toyota or Germany’s Volkswagen. . Toyota is worth roughly $232 billion and Volkswagen has an estimated value of about $98 billion.