Originally Posted by Remonster
I disagree, there's a reason I waited 2 months for my N55 135i to be built when I could have taken home an N54 that same day. It's a clearly superior engine, and the sound is just absurd. I fall in love with it all over again every time I put my foot down, can't say the same for all the N54s I've driven.
Also, and this is definitely nitpicking, but the N55 did not debut with the LCI 1 series but came out the year before. Mine is a pre-LCI N55 powered 2011 135i, 2012 MY cars got the LCI refresh.
I've owned both.
2008 N54 135
2011 N55 135 (current)
The N54 always felt "stronger" via the butt dyno--no proof, just the way it felt.
The N55 almost feels slow at times...or that I feel as though I have to push the gas pedal through the floor to get it to move.
I've had the N55 for a year, and I have been looking lately to get into an M3 or something similar because it just doesn't feel as good as the N54 did.
Additionally, the gas mileage was definitely better in the N54. Not sure if that is more of a DCT vs. MT or N54 v. N55.
Overall, the N55 135 is a good car...but the N54 just felt
so much stronger...the only thing that makes the N55 feel remotely fast is the DCT.
Just my $.02...