Navigation choices on most pages have broad descriptive titles that do not always tell you what is lurking behind that link. Not exactly a comforting thought when you just want to know your color choices for the Saturn SW2 . The other problem with Saturn's site is its use of frames . Their frames do not stay with you for navigation purposes, linked pages do not load in the content frame, and subsequent pages use a completely different framing scheme. Frames have a place only when you are absolutely certain it will simplify your user's life and shorten your site's download time.
Navigation is very consistent.
References to other information are clear and concise. Search and directory functions are well built and easy to use. BMW appears to have taken it a bit further with the use of simple graphics and colors that make it easy on the eyes. The other main strength here is their search function. As sites continue to grow in scope and depth, it is essential that we offer search capabilities.