Some new color options, a new hood ornament, and new 16-inch chrome-plated and aluminum wheel styles are the only changes to the 2004 Park Avenue, which hasn't received a major redesign since 1997. The full-size luxury sedan focuses on maximum driver comfort and minimum driver effort. With four-star crash test ratings, it is also a safe and reliable family transporter. The base and Ultra Park Avenue feature ABS brakes, OnStar, dual front and side airbags and traction control. The Ultra adds stability control and rain-sensing wipers. As for luxury, both models have full power features, power front seats, leather upholstery, and wheel-mounted audio and cruise controls. A CD player, heated seats and mirrors, auto headlights, and auto-dimming rearview mirror are added with the Ultra. A nice option is the unique heads-up display that projects driver information onto the windshield. The 2004 Park Avenue is the largest Buick sedan, seven inches longer than the LeSabre, and it shows in the ample front and rear leg and headroom. The Ultra has a pass-through to the 19 cubic foot trunk for extra long objects. And with a 20/29 mpg, many drivers feel the 2004 Park Avenue is a smart economic choice compared to other cars in this segment. The 2004 Park Avenue is starting to show its age, and owners feel the quality of the interior materials do not live up to the sedan's luxury image. They report some shudder at high speeds, and dislike that the Ultra requires premium gas. They do like all the upscale features, the light and easy handling, and the quiet ride.