** Copper miners fall, tracking price of the red metal

** Benchmark three-month copper CMCU3 on the London Metal Exchange down 0.9% to $9,840 a metric ton

** Copper prices fall after U.S. President Donald Trump announced 25% tariffs on auto imports, which could dampen metals demand

** U.S.-listed shares of global mining giants Rio Tinto RIO.N and BHP Group BHP.N drop 1.3% and 1.1%, respectively

** Copper miners Southern Copper SCCO.N and Freeport-McMoRan FCX.N down 2.1% and 3.6%, respectively

** Canadian miners Teck Resources TECKb.TO down 2.2%, First Quantum Minerals FM.TO down 1%, Hudbay Minerals HBM.TO down 2.1% and Ero Copper ERO.TO down 1.9%

(Reporting by Tanay Dhumal in Bengaluru)

((Tanay.Dhumal@thomsonreuters.com; Twitter: https://twitter.com/TanayDhumal))