Chrysler 300M Problems: 5 Issues Every Owner Should Know
1999-2004 model years · 650+ owner reports · Updated April 2026
According to Au7o's analysis of 650+ owner reports, the 1999-2004 Chrysler 300M has 5 documented known issues, with 2 rated critical. The most serious are 3.5L V6 Engine Oil Sludge and Consumption ($50-$4,500 repair) and 42LE Automatic Transmission Failure ($200-$3,500 repair). The most commonly reported issue is 3.5L V6 Engine Oil Sludge and Consumption with 250 owner reports. Across all issues, repair costs range from $50 to $4,500. DIY maintenance guides at au7o.io.