I have now had my 2013 Dart in the shop 4 times for a cylinder #4 misfire. So far, the error was reset, the engine control module was replaced and all plugs have been replaced twice. So far, I have had the car for 6 months and have 6200 miles on it. Today, the car was overheating and the technician suspects there may be a leak in this cylinder, causing the plug to misfire. Has anyone had issues with a constant cylinder misfire, always related to the same misfire?