Royal Enfield Classic 350 Flex-Fuel Version Spotted Testing in India

• Prototype seems to be compatible with E85 fuels
• No other visible changes
• Aligns with the government’s push for higher ethanol blending

Royal Enfield appears to be working on an ethanol-powered flex-fuel version of the Classic 350, as a test mule has been spotted testing on public roads in Chennai. The motorcycle, which otherwise looks identical to the standard model, carried a prominent ‘E85’ sticker on its fuel tank.

This suggests that Royal Enfield is exploring flex-fuel technology for its popular J-platform motorcycles. This also hints at Royal Enfield aligning with the Indian government’s broader push towards alternative fuels to reduce dependency on fossil fuels. For reference, E85 fuel consists of up to 85 per cent ethanol blended with petrol.

Visually, the test bike doesn’t seem to feature any visible changes, indicating that the updates are limited to the engine’s internals and fuel system tweaks to support higher ethanol content. If introduced, the flex-fuel technology could eventually make its way across Royal Enfield’s entire 350cc portfolio.

That said, while the intent behind higher ethanol-blended fuels is good for nature, the real-world benefits for customers remain questionable.

E85 fuel typically offers lower energy density compared to petrol, which translates to a notably reduced fuel efficiency. Moreover, ethanol-based fuels are known to be more corrosive in nature, requiring higher long-term maintenance. More importantly, the cost advantage isn’t compelling either. Ethanol-blended fuels are priced similarly to regular petrol, and the reduced mileage results in higher running costs.

While Royal Enfield’s move to E85 fuel is a step in the right direction, whether it truly benefits the end user is still uncertain.

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