It is generally recommended that you start and drive your car at least once a week to keep the battery charged and to keep all of the moving parts lubricated. However, if you don't plan on driving your car for an extended period, there are some steps you can take to prepare it for storage. In general, you will start running into reliability issues once you have left your vehicle sitting for a couple of months to a year, due to dried-out seals and gaskets.