In addition to delivering surprising performance, Rainier's refined powertrains and precision-engineered chassis system contribute to a comfortable, quiet ride - a Buick distinction throughout its 100-year history. Inside, Rainier's appointments reveal upscale comfort and luxury. Among the segment's roomiest in terms of head, shoulder and hip room, Rainier easily seats five adults. With the rear seats folded down, there is 80.1 cubic feet (2,268L) of storage space behind the first-row seats.

The premium quality of the Buick brand is subtly but unmistakably evident with the understated elegance of the monochromatic interior - available in either pewter or cashmere - set off by chrome accents and dark burled walnut woodgrain in the instrument panel, door trim and center console.

The driver's "command center" is cockpit-oriented with readily accessible controls, highly readable gauges and a user-friendly driver information center. The instruments emit a jewel case luminescence with silver foundation colors and green needles. The rich, dark burled walnut woodgrain also surrounds the chrome interior door handles, whose bright reflective surfaces further accent the interior appointments as well as aiding interior visibility in soft light.

Front bucket seats and rear seating areas are trimmed in perforated leather. All door panels are trimmed in soft-touch materials. Front seats have standard memory and available heat functions.

Keeping in step with Buick's reputation for comfort and quiet, all 2004 Rainier models feature QuietTuning with increased sound absorption in the engine compartment, all four doors and quarter panels.

The QuietTuning also includes an acoustic laminate in the windshield and front door glass, as well as additional sealing at the vehicle's C- and D-pillars. The result is a remarkably quiet ride made even quieter.