Haha, I wasn't going to post but when I read this thread and the collection of mostly impressive cars people have graduated to a 135i from, I figured I had to represent those that have taken a beeeeg step up in the world.
This is what I drove for 5 years (except mine was black):
My new bimmer is exactly SIX times the price of my old car, bought new. About 8000mpg with a top speed of...ooh a brisk walk. LOVED that little car.