Stock of a Chinese EV-maker that has been grabbing market share from Tesla tumbled on Monday after it announced prices cuts on some models of its cars. BYD Co. stock sank 8.5% in Hong Kong on Monday.

Shares of BYD plunged following steep discounts across several models, stoking fears of a renewed price war in China’s EV market. However, the Chinese automaker is still expected to maintain robust growth,

BYD Co. shares extended losses in Hong Kong trading Tuesday — taking their two-day slide to more than 10% — as last week’s sweeping price cuts stoked concern of another wave of discounting in China’s cutthroat electric car market.