Dealers have struggled for years to make sure that the engines bought from an engine manufacturer during one year get sold that same year on new boats. Unlike cars, in which engines are built into the product, a selection of engines usually can be fitted on outboard boats. Though the reasoning is sound, it creates a challenge for consumers. In 2007, Yamaha stopped designating model years for its outboard engines entirely. The Coast Guard has no model-year regulations for outboard engines, making it harder for consumers to determine the year in which they were built. Usually be found on a sticker near the engine's The month and year of engine manufacture can
