Low-cost, high-tech Chinese EVs have stirred fears of a government subsidized existential threat to automakers around the world. So what do these vehicles have to offer? How do they compare to the Tesla Model Y, which in 2024 was the best-selling car in the world? CNBC’s Beijing bureau chief Eunice Yoon tested four of them from large and high-profile Chinese brands to see how they stack up, and how their rivals might compete.