Chinese electric vehicle maker BYD has added an advanced driver-assistance system for most of its models at no additional cost, catapulting its shares to a record high.

Chinese customers can now experience the carmaker’s proprietary “God’s Eye” driver-assistance system in models that cost as little as 69,800 yuan ($9,555).

Analysts said the move could further fuel a brutal, ongoing price war in the world’s biggest car market.

Shares of BYD surged more than 4% to a record high, according to Refinitiv data, when trading in Hong Kong began on Tuesday. Its shares were last trading at 330 Hong Kong dollars ($42).

“2025 will be the first year of intelligent driving for all,” BYD Chairman Wang Chuanfu said in an event from its headquarters in Shenzhen on Monday.

Previously, the “God’s Eye” feature, introduced in 2023 to assist car navigation, was only offered in BYD models costing more than $30,000.