
Soon after the Indian government released draft rules to introduce higher ethanol blends like E85 and E100, a new development has emerged from Chennai. A test mule of the Royal Enfield Classic 350 has been spotted on public roads, and what makes it interesting is the ‘E85 fuel’ sticker visible on the tank.
This strongly suggests that Royal Enfield may evaluate flex-fuel compatibility for its popular J-platform motorcycles, in line with the government’s push towards cleaner alternative fuels. Hats off to automotive enthusiast Ram Prasad for sharing these exclusive spy shots from Chennai.

Royal Enfield Classic 350 Flex Fuel spied
At first glance, the test mule looks quite similar to the standard Classic 350. However, a closer look reveals some notable differences. The bike has been finished in a new shade, which is not currently offered in the Classic 350 lineup. It also gets alloy wheels instead of the usual wire-spoke setup seen on most variants.
Most importantly, there is a sticker with a handwritten ‘E85 fuel’ symbol on the fuel tank, which clearly indicates that this particular unit is running or being tested on ethanol-blended fuel. The biggest giveaway is that the bike is part of a flex-fuel or alternative fuel testing program. Apart from these changes, the overall design, stance and mechanical components appear to be unchanged, which suggests that Royal Enfield may focus primarily on fuel efficiency rather than making major hardware changes at this stage.

Flex fuel push – the industry is already preparing
These spy photos come at a time when the Ministry of Road Transport and Highways has proposed new draft rules to include E85 and E100 fuels within the official emissions and testing framework. Although these rules have not yet been finalized, it is clear that the industry is not waiting.

Union Minister Nitin Gadkari has been vocal about this change, saying that “There is no future for petrol and diesel vehiclesHe has consistently urged manufacturers to move towards cleaner alternatives like biofuels, CNG, LNG and electric powertrains.
The interesting thing is that the OEMs are listening. Over the past few years, several manufacturers have already showcased flex-fuel vehicles in India. These include Mahindra’s flex-fuel tractor, Maruti’s Frontex E85 prototype, TVS Raider flex fuel, Honda’s CB300F flex fuel (launching in October 2024 for Rs 1.7 lakh), Bajaj Pulsar NS160 flex fuel (E100) to be showcased in September 2024, Toyota Innova HiCross flex-fuel hybrid, etc.

In that context, Royal Enfield’s Classic 350 test mule with E85 markings appears to be part of a broader shift, where manufacturers are actively preparing for a future where higher ethanol blends may become mainstream.
what to expect?
At this stage, it is too early to confirm whether Royal Enfield will launch a flex-fuel version of the Classic 350 or not. However, this test model clearly indicates ongoing development. Given the huge sales volumes of the Classic 350, introducing a flex-fuel variant could help Royal Enfield align with future emission norms, as well as reduce dependence on petrol. This could also open the doors for similar updates to the Meteor 350, Hunter 350 and Bullet 350, which all share the same J-platform.
For now, it remains a trial run, but with policy changes gaining momentum and clear signals from both the government and the industry, flex-fuel motorcycles may soon become a reality in India’s mainstream two-wheeler market.









