The 2009 Mobil 1 12 Hours of Sebring was the 57th running of the 12 Hours of Sebring and the opening round of the 2009 American Le Mans Series season. It took place at the Sebring International Raceway, Florida on March 21, 2009. Three new cars made their debut at Sebring: Audi's diesel R15 TDI, Acura's first LMP1 entry the ARX-02a, and the return of the BMW M3 to the GT2 category. It was also the last time GT1 category raced at the event.