India, April 29 -- After getting a jump on competitors in the latest round of China's electric-vehicle price war, BYD Co. now faces a key test of proving that it can withstand the impact on profits.

China's biggest EV maker broke with its usual practice of not providing guidance ahead of its earnings report due later Monday. The stock's volatility skew this month jumped to the highest since October 2022, indicating increased investor demand for downside protection.

Slowing growth, a rush of new competitors and discounts initiated by Tesla Inc. last year have ramped up pressure in the Chinese EV market, the world's largest. Investors will be scrutinizing BYD's results comments for plans for further aggressive steps after a move to cut pr...