One problem related to gas recirculation valve (egr valve) has been reported for the 2005 Chrysler 300C. The most recently reported issues are listed below.
Normal day driving my vehicle. Drove approximately 24 miles to a shopping center in the city. Turned the ignition car started as expected. Car then died unexpectedly. Attempted to get it started to no avail. Called a tow truck and had the vehicle taken to a trusted ase certified mechanic a couple miles away. Get a call later stating the engine is damaged! mechanic stated that these cars are well known for dropping valves. I proceed to ask whats the damage? these words I would learn to regret. . . I was given a quote of $4000-$7000 depending on how many parts were affected by this one failed piece. Thousands of people in forums are having this issue also. How is it a company doesn't acknowledge a major problem like this and get away with it? I was forced to get a $6000 loan to fix a car with 101k. . . Yea 1,000 miles over warranty! Chrysler needs to own up to this problem.