Most motorcycles have a single engine. The majority of motorcycles on the market, whether they are street bikes, cruisers, sport bikes, or off-road motorcycles, are equipped with a single internal combustion engine. This engine is typically located between the two wheels and is responsible for generating power to propel the motorcycle forward.
Some specialized motorcycles, such as certain trikes or sidecar-equipped motorcycles, may have multiple engines. These configurations are less common and typically serve specific purposes, such as providing additional stability or power in unique riding situations.
It's worth noting that electric motorcycles, which are becoming increasingly popular, also typically have a single electric motor instead of a traditional internal combustion engine.