Everyone is only interested in how fast each one is. For me in terms of driving enjoyment, refinement, power delivery, the 325i wins hands down,
no matter how fast the 320d is at the reef. The ability of the motor to rev hard, the lovely exhaust tone at high rpm, the instant shove when you floor it, is what you get with the 325i, all of this is sadly lacking in the 320d. When you on the go, its where the 325i comes into its element, definitely not at the bottom. Lets not forget BMW straight sixes are legendary and are as smooth as silk...............
It is for the above reasons I went from straight six E46, to 320d and back to 325i.
I really missed making that BM straight six sing, to me it was a big part of why I bought a BMW in the first place, and after the initial fantasticness of the 320d was over, I really began to miss what is major part of BMW history, that straight 6 6pack...............

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