The R350, starting at $48,000, comes standard with an array of sophisticated features, such as leather seating, dual-zone climate control, a multifunctional steering wheel that tilts and telescopes, heated exterior mirrors and windshield washer nozzles, rain-sensing wipers, and tire-pressure monitoring. Choosing the top-level R500 – with prices beginning in the mid-$50s – yields not only the V8 engine, but also adds automatically-dimming rearview and exterior mirrors, extra chrome exterior trim, heated seats with upgraded leather, larger and more aggressive 255/55R18 tires (compared with 235/65R17s on the R350), and sumptuous velour floor mats.

Plentiful options can be added to either version of the R-Class. The Premium Package adds a panoramic sunroof, power liftgate and DVD navigation system, while the Comfort Package includes auto-dimming and power folding mirrors, a cargo cover and a cargo net. Bi-xenon headlights that swivel around corners are included in the Lighting Package, and the Entertainment Package adds a Harman/Kardon audio system with rear controls. A rear seat DVD entertainment system is a stand-alone option. Arriving after introduction is an AMG Sport Package with special 19-inch wheels and AMG-inspired interior and exterior styling cues. Other stand-alone options include an Airmatic air suspension with Active Damping, electronic parking assistance, sport seats upholstered in Alcantara and leather, rear air conditioning, Sirius satellite radio, and dual-screen DVD.

A limited-production Saks 5th Avenue special edition model will be available, with 750 designated for the U.S. market. Mercedes-Benz officials also report that a diesel version is being studied to determine whether it meets U.S. emissions regulations. A hot-rodded AMG version will debut for 2007, expected with a 6.2-liter V8 developing in excess of 500 horsepower.