Tesla briefly became the world’s most valuable automaker by market capitalization in July 2020. Its share-price surge pushed its market value above Toyota’s, even though Toyota sold far more vehicles at that time.
Market capitalization reflects share price multiplied by shares outstanding, so it measures investors’ expectations as well as present-day sales. Tesla’s valuation was supported by rapid growth in electric vehicles, expectations for future production, and investor interest in battery and autonomous-driving technologies.
Tesla’s lead over established automakers changed repeatedly as share prices moved. The company’s rise is therefore best understood as a market-value milestone rather than a claim that Tesla was already the largest manufacturer by unit sales, revenue, or factories. BYD and Volkswagen are among the other major companies frequently compared with Tesla.