How much horsepower does a 2003 bmw z4 have Source Source Source Source Source Source Source Read Also: 2003 Bmw m5 horsepower 2003 Bmw z4 2.5i horsepower 2003 Bmw k1200rs horsepower What is the horsepower of a 2003 bmw 325i 2003 Bmw m3 smg horsepower 2003 Bmw 325ci horsepower