Tesla is expected to report a decline in first-quarter sales.
Tesla CEO Elon Musk has promised to restore growth, but declining demand for older models and a backlash against its political stance are making that difficult.
Complaints at Tesla stores in the United States and Europe have increased. Some data suggests that Tesla owners are selling their cars more often.
Investors are waiting to see whether updated models like the Model Y will help it withstand fierce competition from Chinese rivals, including BYD, and European competitors, such as Volkswagen and BMW.
Analysts expect Tesla to report sales of about 372,410 vehicles this year, compared with 386,810 last year.
