I love my old 2007 LaCrosse for the most part.
Since I put Pirelli Cinturato P7s on it, it has been the smoothest, quietest car I've had since the old days when "personal luxury cars" were built mostly to give cushy rides and luxury accommodations, but not-so-good cornering or handling (I think of my beloved Continentalesque 1982 Celica which rode like a cloud, had soft bucket seats, and had a breathtaking 7-band equalizer stereo sound system...
but cornered like a drunken cow).
My Buick's stiffer but far more secure-feeling ride accepted, the few things I don't like so much about my LaCrosse:
1. The front seats are really too firm and feel increasingly uncomfortable during long trips. But I do have the standard "mouse fur" seats. (The positive here is that they have retained their "like-new" condition for all these years - yeah, granite wears much better than feathers.)
2. The 22" wipers tend to start squeaking at the edges
(very irritably) far too soon after replacement (I suppose because of the curvature they have when not in use). I've started using 21" replacement wipers and the squeaking problem has diminished.
3. The outside air
intake for the cabin is a terrible debris trap that is difficult to clean out.
4. The front of my '07 is Jaquar-like beautiful, but the rear end looks like a "tarted up" Taurus of the same year.
5. This car is the most "user unfriendly" I've ever owned in regards to simple replacements and repairs. Just replacing a headlight bulb is an unbelievably complex ordeal.
6. My experience with my area's official Buick dealerships has been extremely disappointing.
But I must admit that my '07 LaCrosse still looks like new and runs quietly and dependably - thanks to local independent auto maintenance.