When a car's oil pan is leaking, it means there has been a failure of the oil pan gasket seal. In this location, even a small break in the seal can contribute to a large amount of oil being lost.
Oil leaking from a car's oil pan is a common problem and can be easily fixed by replacing the oil pan gasket. This repair may be quickly done by a qualified mechanic or dealer, or the owner may try it himself with the right tools and a little bit of mechanical ability. There are a number of web sites that offer step-by-step instructions for this repair.