In order to be able to start a 125cc-class engine like the one in the PCX with a compact ACG starter, Honda incorporated a number of innovative ideas in engine design.
Motorcycles are already comparatively easy on the environment and economical, but Honda is engaged in a variety of initiatives in order to further improve their environmental performance.
Using alcohol-based fuel made from plants
Alcohol-based fuel made from plants does not increase the net amount of atmospheric CO2 when burned. Honda has developed a Mix Fuel Injection System capable of running on both gasoline and alcohol for use in Brazil, where use of alcohol-based fuel is widespread.

Making scooters that run on electricity instead of gasoline
The electric scooter EV-neo emits no CO2 in operation and offers quiet operation. The introduction of leasing of this product with its superior environmental performance is a key first step toward the popularization of electric scooters.
In addition to these initiatives, Honda is also working to improve existing gasoline engines, so that they will be able to perform more work using less fuel.
Improving gasoline engine efficiency

4-stroke engines
Honda employs fuel-efficient, cleaner-burning 4-stroke engines in all its motorcycles, including its 50cc-class models.

PGM-FI
Honda employs fuel-efficient PGM-FI (electronic fuel injection) in most models, from small scooters to large-displacement motorcycles.

Friction reduction
Honda continues to develop technologies to minimize the friction produced during engine operation.

Idling Stop System
The Idling Stop System enables the engine to produce zero exhaust emissions when it is engaged and the vehicle is stationary.