Don't be mislead just because the 318is is a 4banger. It is very light and is geared very well, and it pulls like hell on the top end. But yes, the 325i hits 60 about a second faster than the 318is. It should be noted that the 318is has to make a shift to 3rd to hit 60 and the 3.73 geared 3.25i does it in 2nd.