1998 Bmw 540i 6 speed mpg Source Source Source Source Source Source Source Read Also: 1998 Bmw 540i 6 speed 1998 Bmw 540i 6 speed for sale 1998 Bmw 540i 6 speed manual 1998 Bmw 540i top speed 1998 Bmw 540i 6 speed review Bmw 540i 6 speed 0-60