Royal Enfield Classic 350 E85 Flex-Fuel Bike Spied in India

 Classic 350 Flex-Fuel test mule was spotted in Chennai in late April 2026. This means that the production version of the bike is getting closer to reality. The prototype follows a concept that Royal Enfield first showed at the 2024 Bharat Mobility Expo. It also aligns with the Indian government’s recent draft notification that proposes allowing higher ethanol blends like E85, which is 85 percent ethanol and 15 percent petrol, and even E100, which is pure ethanol.

The test bike looks very similar to the current Classic 350, which is often called the Reborn Classic. However, there are a few distinct changes. There is a prominent sticker near the fuel filler cap that says “E85 Fuel.” This sticker confirms that the bike can run on high-ethanol blends. The test mule was spotted in a new brown or beige colour with a blacked-out body. This is different from the metallic green and red dual-tone colour seen on the 2024 concept. While the original concept had wire-spoke wheels, the recent test unit was rolling on alloy wheels. This may be to keep costs down or to test different wheel setups.

Mechanically, the bike keeps the core parts of the J-Series engine, but it needs some important internal upgrades to handle ethanol’s corrosive nature. Ethanol can damage regular rubber and metal parts over time. The engine is the same 349cc single-cylinder, air-oil cooled unit. The power and torque stay the same as the petrol version, which is 20.2 horsepower and 27 Nm of torque. However, the ECU, which is the brain of the engine, requires a significant remap to manage ethanol’s higher octane rating and different ignition timing. To support E85, Royal Enfield must use corrosion-resistant fuel pumps, high-flow injectors, and specialised seals. These are all parts that will not get damaged by the ethanol.

The launch of this bike depends heavily on when the government formally enforces the new fuel regulations. Experts estimate the price to be approximately ₹2.25 lakh, ex-showroom. That is roughly a ₹10,000 premium over the standard alloy-wheel variant. While no official date has been confirmed, industry insiders suggest a potential market debut by late 2026. Once launched, it will be one of the few high-ethanol-compliant motorcycles in India. It will compete with bikes like the Suzuki Gixxer SF250 Flex Fuel. The same technology will likely trickle down to other Royal Enfield models like the Hunter 350, Meteor 350, and Bullet 350.

If you are thinking of waiting for the Royal Enfield Classic 350 Flex-Fuel, you should do so if you want to use greener fuel with a higher percentage of ethanol, which is made from plant materials and is renewable. You should also wait if you live in an area where E85 or higher ethanol blends become available at fuel stations. The bike will also be future-proof, meaning you will not be left behind if the government mandates higher ethanol blends in the coming years. You can wait only if you are willing to pay about ₹10,000 more than the standard bike and if you are willing to wait until late 2026 or later for the launch.

You should buy the current Classic 350 now if you need a bike immediately, if you want to save money on the purchase price, if you do not have access to E85 fuel in your area, or if you are not concerned about future ethanol mandates. The current bike runs perfectly on normal petrol and has a large service network.