The term "drive cycle" typically refers to a standardized series of driving maneuvers (speeds, accelerations, decelerations, idling) used for emissions testing or fuel economy calculations. Different agencies and countries have different drive cycles (like the EPA's FTP-75 in the US).
If you're looking for information on fuel economy for a 2000 Malibu, you should consult the owner's manual or the EPA's fuel economy website (fueleconomy.gov, although data for older vehicles might be limited). If you're working on emissions, you'll need to refer to the relevant testing procedures for your location.
