50cc

50cc refers to the engine displacement of about 50 cubic centimeters. It is a common size for lightweight motorized two-wheelers, including mopeds, scooters, small motorcycles, and some motorized bicycles. The displacement is a rough indicator of power rather than a direct measure of performance, but it typically corresponds to modest power output and limited top speeds.

Most 50cc engines deliver roughly 2 to 5 horsepower (1.5–3.7 kW), depending on design, whether the engine is two-stroke or four-stroke, and the presence of variable gearing. Because of the small displacement, top speeds in practical use are often restricted by design or regulation, commonly in the range of about 30 to 50 mph (50–80 km/h).

These vehicles are favored for urban transport due to low purchase costs, light weight, easy maintenance, and high fuel efficiency. Typical fuel economy for a 50cc scooter can be in the range of 2 to 3 liters per 100 kilometers, depending on load and riding conditions.

Regulation and licensing vary by country and region. In many parts of Europe, 50cc mopeds are capped at 45–50 km/h and may require an AM license or certain age limits; some jurisdictions allow riding with minimal licensing. In other areas, licensing requirements and vehicle classifications differ or may be more stringent.

Maintenance considerations include regular engine oil (for four-stroke variants) or oil-fuel mixture (for two-stroke), chain and drive belt checks, tire pressure, and periodic servicing. Emissions and noise have driven a shift from two-stroke to four-stroke designs in new models.