The current M-Class is much more refined than it was when it was first introduced. The M-Class got a facelift for 2002 and a more powerful base engine in 2003, so there isn't much changed for 2004. The ML55 AMG, which was once the pavement-burning performance leader of all SUVS, has been eliminated. The DVD-based, satellite-guided navigation system introduced last year on the up-level ML500 is now available in the ML350. Next Page