A 12-layer sample of Samsung Electronics' seventh-generation High Bandwidth Memory (HBM4E) / Courtesy of Samsung Electronics

Samsung Electronics became the world's leading supplier of automotive memory chips last year, surpassing U.S. chipmaker Micron, an industry report showed Sunday.

Samsung's share of the global automotive memory chip market rose to 40 percent last year from 35 percent in 2024, according to a report by S&P Global Mobility.

Over the same period, Micron's market share fell to 36 percent from 40 percent, placing it at No. 2.

Samsung's gains were driven in part by its expanding presence in China, one of the world's fastest-growing automotive markets.