Luxury:
* Mercedes-Benz S-Class (W221): A completely redesigned generation.
* BMW 7 Series (E65/E66): Continued from the previous year but still significant.
* Audi A6 (C6): A major refresh for this model.
Sports Cars/Performance:
* Porsche Cayman: First generation.
* Ford GT: Iconic revival of the classic GT40.
Sedans/SUVs:
* Ford Focus (second generation facelift): A mid-cycle refresh.
* Chevrolet Impala (ninth generation): Completely redesigned.
* Chrysler 300 (first generation): A major redesign that was very influential in its segment.
* Honda Odyssey (third generation): A new generation minivan.
* Toyota RAV4 (third generation): A notable SUV redesign.
Other Notable Mentions:
Many other cars received minor updates or facelifts in 2005, making a complete list very difficult. To find more specific examples, you'd need to specify a brand or type of car you're interested in (e.g., "Japanese sports cars of 2005," or "American luxury sedans of 2005").