A properly running engine is a vital part of driving a car, for that reason, Hyundai has initiated a recall of nearly 470,000 sedans that could contain debris in their motors. The recall covers 470,000 model year 2011 and 2012 Hyundai Sonata vehicles equipped with a 2.0 liter or 2.4 liter gasoline direct injection engine. According to a notice [PDF] posted with the National Highway Traffic Safety Administration, the affected vehicles may contain metallic debris that was not fully removed during manufacturing of the engine crankshaft.