Tesla's vehicle deliveries fell 13% in the first quarter, dropping to 336,681 units from 386,810 a year earlier, amid backlash over CEO Elon Musk's political actions. Analysts describe the results as disastrous, highlighting significant declines in key markets like Europe, California, and China, despite increased incentives. Tesla shares dropped 6.1% following the news, although a new, more affordable model is expected later this year.