Translation guide
A bicycle with a small motor, often used for short-distance transportation. In Japanese, the term can refer to mopeds, motor-assisted bicycles, or small motorcycles depending on context.
motorized bicycle (moped, 50cc)
Most common everyday term for a 50cc moped/motorized bicycle.
motor-assisted bicycle (pedal assist)
Use this for electric bicycles that assist pedaling.
A bicycle fitted with a small engine, typically 50cc or less, often requiring a license and registration.
Legal and formal term for a motorized bicycle or moped (up to 50cc). Often abbreviated in conversation.
You need to get a license for a motorized bicycle.
Common abbreviation of 原動機付自転車. Used in everyday conversation and official contexts.
Loanword from English 'moped'. Refers specifically to a bicycle with pedals and a motor, but usage may vary.
This moped gets great gas mileage.
A bicycle with an electric motor that assists pedaling, not a full throttle vehicle. Common for commuting and shopping.
Standard term for an electrically power-assisted bicycle (pedelec). The motor only assists when pedaling.
With a motor-assisted bicycle, you can climb hills easily.
Loanword used in marketing and among enthusiasts. May refer to higher-speed electric bikes not classified as bicycles.
This e-bike can go up to 30 km/h.
A small motorcycle that may be legally classified as a motorized bicycle (原付) in Japan, often with pedals or scooter style.
The direct translation 'モーターバイシクル' is not used. Use 原付 or 電動アシスト自転車 depending on the type.
原付 (moped) requires a license, registration, and helmet. 電動アシスト自転車 (pedal-assist bicycle) is legally a bicycle and does not require a license (with power limits).
A moped requires a license, but a motor-assisted bicycle does not.
I ride a motorized bicycle to work.
Assumes a 50cc moped; if electric assist, use 電動アシスト自転車.
Motorized bicycles are convenient for short trips.
原付で通学しています。
I commute to school by moped.
Shorter, common term for electric bicycle, but can be ambiguous (may refer to fully electric bikes). Usually understood as pedal-assist in context.
I recently bought an electric bicycle.
I go shopping on my scooter.