The Model year in the automotive industry is absolutely defined only by the manufacturer, and not by any local vehicle registration practices or marketing opinions. Typically, complete vehicle redesigns of long-standing product models occur in cycles of at least five years, with one or two “facelifts” during the model cycle, and manufacturers introduce such redesigns at various times throughout a calendar year. Introductions of new models are often phased in around the world, meaning that a “2015 model” of a particular vehicle may actually refer to two entirely different vehicles in different countries. Therefore, the more common practice for enthusiasts and motoring writers in other countries is to identify major revisions using the manufacturer’s identifier for each revision, which is the Model Number.