Most of the RX's visible changes are relatively minor. There are some new interior and exterior colors, a couple of new wheel designs, revised head- and taillights, and an improved infotainment interface.
The most significant changes go unseen. Under the sheet metal, the updated RX benefits from hundreds of laser welds in the side pillars, floorpan, rear crossmember, and other strategic structural points.
Even more invisible is the increased amount of structural adhesive sandwiched between panels, covering nearly 10 times more of the joints and body. Not only does this help with body rigidity, but it also cuts down on outside noise.
A stronger SUV body is a good thing. Any opportunity to reduce flex helps for a more stable ride and better handling — but only if the suspension is simpatico. The new RX's increased rigidity meant engineers needed to retune suspension components, adding thicker front and rear stabilizer bars (hollowed for weight savings), reinforced bushings, and revised spring and shock settings.