The main difference between BS IV (Bharat Stage IV) and BS VI (Bharat Stage VI) compliance for Royal Enfield Bullet motorcycles lies in the emission standards they meet. Here's a breakdown of the key distinctions:
Emission Standards: BS IV and BS VI are sets of emission standards established by the Indian government to regulate the pollutant levels emitted by vehicles. BS IV was implemented in India from April 2017, while BS VI was enforced from April 2020. BS VI is more stringent than BS IV, aiming to significantly reduce harmful emissions from vehicles.
Pollutant Levels: BS IV allows for higher levels of pollutants such as carbon monoxide (CO), hydrocarbons (HC), nitrogen oxides (NOx), and particulate matter (PM) compared to BS VI. BS VI standards mandate a substantial reduction in these emissions, resulting in cleaner and greener vehicles.
Technology and Components: To comply with the more stringent BS VI standards, Royal Enfield Bullet motorcycles had to undergo significant changes in their engines and exhaust systems. BS VI-compliant motorcycles are equipped with advanced technologies like fuel injection systems, improved catalytic converters, and enhanced engine management systems. These modifications ensure better combustion efficiency and reduced emissions.
Improved Fuel Efficiency: In many cases, BS VI-compliant motorcycles exhibit improved fuel efficiency compared to their BS IV counterparts. The incorporation of more advanced engine management systems and components helps optimize fuel consumption and reduce wastage.
Availability: With the enforcement of BS VI emission standards, the production and sale of new BS IV-compliant motorcycles have been discontinued in India. Hence, if you're looking to purchase a new Royal Enfield Bullet motorcycle, it would be BS VI-compliant by default.
It's worth noting that the transition from BS IV to BS VI compliance affects various aspects of vehicle design and performance. While the primary objective is to minimize environmental impact, these changes may also lead to differences in power delivery, throttle response, and overall riding experience between BS IV and BS VI Royal Enfield Bullet motorcycles.