Yes, I found that I accidentally would push the cruise control levers instead of the turn signal stalk. The drivers behind were probably thinking that I was turning left, right, then left again only to stay in my current lane.
The cupholders seem to be o.k. Never had the water bottle fly out of it. Oh, and big gulps will only fit the bottom one inch. Best not to make any stops at the local 7-11 in your new E90!
I did like the extra space in the trunk though. Especially that neat little hidden compartment!