Tesla Inc. TSLA, -10.34% delivered about 63,000 vehicles in the first quarter, fewer than analysts had expected. Analysts surveyed by FactSet has expected 76,000 deliveries, with about 54,600 of those being Model 3 sedans. Only 50,900 Model 3s were delivered, Tesla said in a statement late Wednesday. Tesla said overall deliveries were down 31% from the previous quarter, citing challenges in delivering a massive increase of cars to China and Europe.