Originally Posted by imported_mega
because it is, drive both back to back, there's quite a big difference in how they feel
I did drive the 135i. My impression: smaller car, inherently less stable at high speed (due to shorter wheelbase), with no major improvement in handling or acceleration (due to nearly identical weight). And I'm not even going to comment on the 1-series looks. IMO, the only reason to go for the 135i is to save a little bit of money.