This is getting slightly off topic, but....
IMO, most imports are not designed by bean counters. GM is such a fine example of being run by bean counters. Things have improved but not changed. I have driven newer Bonnevilles (working at dealers,etc). The fact is the plastic creaks, it is not of very good quality, workmanship leaves much to be desired. So age is not a factor. Even with age, I have driven 93 Toyotas and Hondas/Acuras. Those things do not rattle, or squeak. (I'm referring to the dash panel assemblies) In 2000, I drove a 92 Lexus LS400 with 75,000 mi. Not one single creak, groan. Panels lined up perfectly. Interior was so silent you couldn't tell if the engine was on (fine for luxury, not for sport - I am trying to indicate the smoothness). My Bonneville all the panel make noises and stuff going over bumps and stuff. Now before another member gets upset with this point, please let me point out that for a number of years, GM had Toyota build a version of it'* Corolla for them (remember the Prizm). The prizm was a rock solid car under $20,000. As I said I worked at a dealer and a 93 Prizm would not make nearly as much noise as the Cavalier/Sunfire. Neither does an Integra, Legend, Accord, or Camry.
Second I can't respect any car company that authorizes and builds a monstrosity like the Aztec. Not only did they build a car uglier than the Gremlin, they put it in the Sporty Division. The fact that it is only offered with the 3.4L is also sad. The potential of the 3.8 is there. It could easily put out 230-250hp. N/A. and 300 */C. They make do with adequecy. Along the lines of the Sporty Division, why are there no high performance coupes. Just the Sunfire, and the Grand Am. Why do they make the sports cars with automatics, and then offer a no charge manual - stick, along with RWD has been way more sporty since forever.
Third, it has taken GM 10 years to realize the potential of the performance compact car market. And with their offerings (J-bodies) I wouldn't take them serious - the interior is soooooo cheap. The engine offerings do not even begin to speak of performance.
Now with just my experience with my Bonneville, I can't afford to risk getting another Domestic - I paid around $15,000 for mine in '94 but I have sunk 7,500 (at least) in REPAIRS not maintenance - add in routine maintenance and I am looking at 10,500. And I haven't even hit 100k mi.
Sorry my money is with the imports (well c ertain imports. Some are just as bad as domestics)
PLease remember that this is based on my experience and is my OPINION. (your'* will be different.)