Those faithful, along with newcomers, will fancy the cabin, which is grander in size and style. While the interior volume hike is rather insignificant -- 140.9 cubic feet versus 140.8 -- the jumps in legroom (0.6 inch front, 0.2 inch rear) and rear shoulder room (0.5 inch) are not. There's even an additional 1.7 cubic feet of cargo space, thanks to an all-new rear control-arm suspension that eliminates the 2009 model's impeding strut towers.

Lexus has fitted the RX with numerous interior tech tidbits: rearview mirror backup camera display (on vehicles without nav), intuitive park assist, Smart Key access system, XM NavTraffic and Weather, heads-up display, rear-seat entertainment, 15-speaker Mark Levinson audio, and standard Bluetooth, to name a few. But it's the new Remote Touch controller (standard with navigation) that's most noteworthy. Similar in function and feel to a computer mouse, the center console-mounted Remote Touch, which controls the nav system, many audio and HVAC controls, and personalization functions, minimizes the number of hard buttons and eliminates grimy fingerprints on the display screen. It's an ingenious and intuitive feature that will certainly find its way into future Lexus products. Ditto for the white OLED (organic LED) multi-information display, which is thinner and more efficient than LCD, and the available wideview side monitor, a system that uses a right sideview mirror-mounted camera to display the passenger-side blind spot when parking.

As before, the RX is available in two gas (RX 350 FWD and AWD) and two gas/electric trims (RX 450h FWD and AWD). The RX 350 receives an upgraded 3.5-liter 275-horsepower, 257-pound-foot V-6 that represents increases of five horses and six pound-feet, and, with help from a new six-speed automatic, delivers an estimated combined-fuel-economy bump of one mpg. Reside in the Snowbelt? Then opt for the all-wheel-drive version, which gets a new Active Torque Control system that uses an electromagnetic coupler bolted to the rear differential to apportion up to 45 percent of torque to the rear wheels. The coupler, which eliminates the center differential, helps the new system tout weight savings of 66 pounds.