Lexus wasn't the first manufacturer to introduce a luxury SUV. Mercedes Benz, who debuted the ML 320 in 1998 just a few months before Lexus introduced the RX 300, holds that distinction. Nevertheless, RX has become the best-selling luxury SUV (Lexus calls it an “LUV,” or Luxury Utility Vehicle), outselling competitors like Mercedes, Porsche Cayenne, Cadillac SRX and BMW X5.

Redesigned for 2004, RX was showing its age, so Lexus' best-selling nameplate received a welcomed redesign in an attempt to stay ahead of challengers like the Volvo XC 90, VW Touareg, Infiniti FX and Lincoln Navigator. Last year, Lexus included a power rear tailgate as standard equipment on all models. Inside, Lexus added wood and leather trim to the shift knob and steering wheel, plus the power seat was upgraded from four-way to eight-way. However, Lexus downgraded the standard six-disc CD changer on the ‘04 model (now an option), replacing it with a single-CD system.

Again, essentially unchanged for 2006, the RX 330 has added minor modifications, including two-way power lumbar support for the front passenger seat, an LED glovebox lamp, anti-theft headlamps and choice of either Sirius or XM satellite radio options.

The new RX 330 is available in three models: front-wheel drive ($36,675), four-wheel drive ($38,075) and the RX 400h hybrid version ($49,060), which we reviewed separately. Stand-alone or option packages are available on all models.

When last restyled in 2004,the operative word for the RX 330 was "bigger." The wheelbase was extended nearly four inches to 106.9", overall length grew by six inches, width expanded by one inch and RX 330 grew almost an inch in height to 66.1". The additional inches add up to a roomier interior, which increases cargo space to 85 cubic feet.

All of this added room is wrapped in attractive new exterior sheet metal. The sharply sloped roofline is the most notable feature. The previous model's painted C-pillar is replaced with a blacked-out D-pillar with dark glass. While the overall look still resembles its predecessor, the most significant change is themulti-element chrome tail lamps, covered with a clear lens. The look is extremely popular with the hip "tuner car" generation and seems out of place on a luxury vehicle, but it is growing on me.

The RX 330 is powered by 3.3-liter 223-hp V6 engine mated to a five-speed automatic transmission. The same engine for 2005 was rated 230-hp; however, the Society of Automotive Engineers (SAE) has revised its testing standards for horsepower and torque. Even though the calculations have been revised, there is no change in performance – the 2006 engine is just as powerful as 2005’s. A carryover from the previous generation, RX has the center console-mounted shift lever.

The appearance from the front is reminiscent of the ES 330 Lexus sedan with its rakish, swept-back headlamps and bold front bumper. Speaking of headlamps, when you opt for the $6,183 premium package, (which includes leather seats, power sunroof, roof rack, power tilt-telescopic steering column, DVD navigation system, backup camera, heated seats and more), you get Adaptive Front Lighting where the low-beam swivels with the steering to help illuminate curves and around corners.

Choose the performance package ($4,955) over the premium package and you’ll add four-wheel air suspension system with four driver-selectable settings. The air suspension automatically lowers the vehicle at speeds higher than 62 mph, to reduce air drag for better handling and fuel economy. Drivers can select an even lower position that improves cornering or a higher suspension position for a smoother ride. It can even be programmed to automatically lower the RX when the ignition turns off for ease in entry and exit of the vehicle.

Inside, RX 330 is pure luxury, trimmed in real walnut or bird's-eye maple with chrome door handles and metal-looking plastic dash and gauge trim. The two-tone interior with soft leather seats is plush and more luxurious than before. As expected in a luxury vehicle, the RX 330 comes standard with a long list of equipment.

Since the RX 330 is targeted for the upscale empty-nester crowd, Lexus didn't try to cram in a third row of seats. And while a fifth passenger could squeeze into the backseat, this is really just a four-passenger vehicle. Front seat comfort is world-class with 8-way power adjustment for the driver and passenger. The backseat is split 40-20-40 with the center section mainly used as a fold-down armrest with storage. Disappointingly, there are no rear-seat audio or climate control adjustments. And, the wheel-mounted controls for audio operation are not illuminated for night use.

Our test vehicle came fully equipped with the optional (and excellent) Mark Levinson/navigation system package ($9,828), which includes a rear backup camera to see if obstacles or people are in your path, a rear-seat DVD-based entertainment system, huge sunroof, power tilt-telescoping steering wheel and adaptive cruise control.

While performance is adequate, flat-out acceleration doesn't throw you back in the seat. I found myself wanting more horsepower. But, most RX owners buy it for its abundant luxury and smooth, quiet ride. While I didn't take the RX off-road (and suspect few owners will), the fully independent suspension afforded sure handling and maneuverability. The ride can easily be classified more like a luxury sedan than an SUV.\

Safety equipment includes head-curtain, side, dual-front and a driver's knee-protection airbag. The side-curtain airbags extend to help protect backseat passengers as well.

Frontal impact crash test ratings conducted by the Insurance Institute for Highway Safety has awarded the RX 330 its highest designation of “Good” and named it a “Best Pick.” No side impact crash tests have been conducted.

Lexus has significantly improved upon what was already considered by many to be the best luxury SUV on the market. Lexus offers upscale luxury buyers exactly what they're looking for: eye-catching styling, loads of luxury appointments, pampering conveniences and the quality assurance and dependability associated with the Lexus name. However, all of this luxury doesn't come without a price. Our well equipped, all-wheel-drive tester listed at $48,722.

The RX 330 is a bestseller and genuinely world-class. The ride is smooth and quiet, void of wind and road noise. Outside, the style connotes class and luxury. Inside, the cabin is well-crafted, exuding quality and attention-to-detail.Safety features are impressive. If you like the style and don’t need a third row of seats, the RX 330 is an excellent choice and won’t disappoint.

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