This is a model that's improved tremendously in refinement and noise, compared to its first iteration a number of years back. Thanks to thicker glass and more sound insulation, there's only now a faint thrum in V-6 models and, of course, the burble and rumble of V-8 models, while wind and road noise are sealed away.
You'll also find plenty of places to hide things in the 300's cabin. The cupholders hide under a roll-away tambour; the center console hides a usefully deep well, and there's a nicely sized bin in the console ahead of the shifter. All the doors have molded-in bottle holders. In the trunk, 16.3 cubic feet of space will hold plenty, even if it's not as big as the titanic 20-cube trunk in the Ford Taurus.
You'll find the 300 to be one of the more spacious sedans in its class, even though it doesn't quite have the sprawl-out space of a Buick LaCrosse or Toyota Avalon. It probably comes as no surprise that this sedan's rear-wheel-drive layout and chiseled, just-right roofline and contours favor design over utility.
In front, the seats are well bolstered, and there's plenty of headroom even if you get the sunroof. Back seats tend to be a little tight on legroom, although they're comfortable enough for two adults.
Trunk space is quite good, too. These current versions of the 300 don't feel quite as claustrophobic as the previous version, due to thinner pillars and a little more side glass, so visibility is a bit better, too.
We have noticed that the new rubberized material on the dash has a gumminess to it that attracts lint; that's one of the few fine details that detracts a bit from the classy, somewhat retro vibe of the interior.