The high-selling Model Y is crucial for both Elon Musk and Tesla, but a half-hearted reskin of the car hasn’t reversed the company’s sales woes. Would a complete overhaul have been a better bet?

Tesla is putting an elongated version of the Model Y through its paces in Europe. The SUV has been stretched to provide a more spacious third row. A distinctive ducktail-style rear spoiler sets the ...

The L is already on sale in China and is due to make its European debut later this year. It gains around 6 inches (150 mm) of ...