Engine vibrate at low gear and start up

[ray128i]

Just have chance to drive another 2010 128i from dealer and find out its engine is much smoother than mine. Mine especially would vibrate more at low gear, low rev. I pretty much remember mine was like this from the beginning. Did anyone compare 2010+ model with older one? or ever having similar issue?
(mine is 09' with sport package, the one from dealer is 2010 model, with the premium package)

[RPM90]

Originally Posted by ray128i

Just have chance to drive another 2010 128i from dealer and find out its engine is much smoother than mine. Mine especially would vibrate more at low gear, low rev. I pretty much remember mine was like this from the beginning. Did anyone compare 2010+ model with older one? or ever having similar issue?
(mine is 09' with sport package, the one from dealer is 2010 model, with the premium package)

There should be no vibration or shake at idle or any rpm for that matter.
That engine is butter smooth. Sometimes there can be an idle hiccup, but nothing that would be a vibration or serious enough to notice, unless something is wrong.
So, take it in.
You could have a bad plug, coil, whatever. Just take it in, it's the best way to get an answer to what might be wrong.