Engine Exhaust System problems of the 2009 Dodge Caliber

I bought my car used in June of 2014 and thought it was in pretty decent shape at the time, little did I know. I was driving my car (2009 Dodge Caliber) and hit a small pothole and heard some rattling afterwards. I assumed it was maybe a clamp on my exhaust and so wasn't real worried about it and figured I would have my mechanic check it out in a week of so. I got concerned after a couple days because the rattling turned into clunking. I sent it to my mechanic and he said there was major rot on the engine cradle which was rotted and broken and both front control arms were no good and sway bar bushings also needed replacing, two days before this noise I was on the highway traveling at speed limit, had this all fallen apart I could have been killed. The cost to repair all the parts which were, as far as my mechanic is concerned, faulty and should be recalled, was $1920. 13 !!! this car is 6 years old with 86,000 miles on it and should not have the rot in these places as severe as it is. I know on the Dodge Caliber forums many owners have similar problems with the major front end parts rotting. This is a major problem and I wouldn't even have noticed had my mechanic not put it on a lift and looked at it and even then once he took off the engine cradle to replace it he noticed the rotted parts that were covered by the cradle, thank god I didn't lose control and get killed as I travel a lot on the highway, this problem needs to be brought to light and Caliber owners need to have their mechanics check out their cars before someone's engine falls out and they get killed. When I purchased this car it was most likely rotted pretty bad and I didn't know that was a defect in them at the time. I see lots of these cars for sale still on lots, people need to have the front ends inspected thoroughly before they purchase one .