Tesla has recorded its first quarterly decline in deliveries since 2020, when the coronavirus pandemic erupted, as the US automaker faces growing competition in the electric vehicle market. The company led by tech billionaire Elon Musk delivered 386,810 of its electric cars to customers between January and March, according to its figures released on Tuesday. In the same quarter of the previous year the number was almost 423,000. Analysts had expected an average increase to just over 449,000 deliveries in the first quarter of 2024. Although Tesla deliveries have increased significantly in recen…