CAR PROBLEM is a term used to describe any issue that may arise with a car. Common problems include rattling, rusting, stalling, denting, and vaporlock. Rattling is a sound caused by loose parts or components in the car. RUST is a form of corrosion that can occur on metal surfaces due to exposure to moisture. Stalling is when the engine stops running suddenly and unexpectedly. Denting is when the body of the car is damaged, usually from an impact. Vaporlock is a condition where fuel vaporizes in the fuel line, preventing the engine from starting.