Should you buy a car now or wait amid the ethanol push?

The Indian government has hit the ethanol accelerator hard. In a span of just 74 days, it has moved from making E20 mandatory nationwide on April 1, 2026, to clearing the regulatory framework for E100 on June 13, 2026. Consequently, vehicle owners and buyers are grappling with more questions than answers.

In order to make your life easier, we have collated the most common questions and addressed them based on the best available information.

Here is what is actually happening on the ground:

It is clear that no strict sequence is being followed. India appears to be borrowing from Brazil's playbook, where low-ethanol fuels (E20–E30) and flex-fuel vehicles (E85 and E100) expanded side by side and that is what India is doing too.

Why? Because fuel pumps, vehicles, and ethanol supply chains all take years to build and need to converge around the same time.

There is no official timeline announced for a nationwide rollout of E22–E30 or E100. According to an Autocar India report, even after BIS specifications are set, the validation process for higher blends could take three to six months.

Two factors, however, suggest the pace could be faster than expected. First, the E20 rollout was achieved roughly five years ahead of its originally planned 2030 deadline. Second, the government recently waived central excise duty on E22–E30, which is a meaningful signal to oil marketing companies (OMCs) like HPCL, BPCL and IOCL to scale up production.

E85 is already live in a limited way. As for E22–E30, no official order has been announced. An Autocar India report cites Vijendra Singh, President of the All India Distillers' Association, suggesting that E25 is likely to be the next major milestone. This remains informed speculation with no government confirmation.

No, but the answer depends on which model India settles on. The most likely outcome is the Brazil-style multi-dispenser model, where the same petrol pump carries two nozzles: one for standard E20 and one for higher blends from E25 onwards. You would be able to choose based on what your vehicle is rated for, similar to how premium and regular petrol coexist today.

In parallel, the government has asked ARAI (Automotive Research Association of India) to conduct a full study on the impact of E25 on existing vehicles, as per a TOI report. If that study raises no major red flags, it could pave the way for limited over-blending which would also reduce the cost and timeline of building separate dispensing infrastructure.

To an extent, yes. But the answer depends on exactly when your vehicle was made. Not all pre-2025 cars are in the same boat. Here is where each era stands:

A LocalCircles survey of 22,574 respondents, skewed toward owners of older vehicles, found that real-world complaints are not trivial:

• 56% reported reduced mileage or fuel efficiency
• 43% cited engine performance issues such as power loss, knocking, or rough idling
• 34% reported increased repair and maintenance costs
• 20% experienced fuel system issues
• 19% reported increased engine heating
• 19% said they had experienced a combination of these issues

That said, the government's position is notably more measured. In 2025, the Ministry stated that efficiency drops in E10 vehicles running E20 have been marginal. Union Transport Minister Nitin Gadkari went further, ruling out any phasing out or mandatory retrofit of non-compliant vehicles and stating that normal wear can be managed within routine servicing.

The gap between what owners are reporting and what the government is saying is real. The most practical step: if your vehicle predates April 2023 and you are noticing any of the above symptoms, raise it at your next service visit rather than waiting.

Not for every phase, but yes for the larger leaps. Automakers design vehicles for fuel ecosystems, not specific blending percentages. The direction the government has signalled by legalising E85 at a limited scale and clearing E100 is clearly toward flex-fuel vehicles as the long-term platform.

The logical industry response would be to develop two tiers: a next-generation baseline fleet rated up to E25 for the mass market and a flex-fuel range capable of running on anything from E20 to E85.

On timing, the auto industry has formally requested a minimum six-month notice window before any new blend mandate takes effect, as reported by CNBC TV18.

Probably not, but go in informed. If you are buying a new car from a mainstream brand today, it is E20-compliant and E20 will remain available.

If you want to future-proof yourself against the next five years of ethanol policy, ask specifically about flex-fuel capability before signing. Models from Maruti, Toyota, and Hero (in case you are interested in 2-wheelers) with FFV variants are entering the market and will be capable of handling higher ethanol blends.

What you should avoid is buying a pre-April 2023 used car without checking its fuel system condition first as they are not E20 compliant by design.

Let's be honest. It is not the best time to be a car owner or a potential car buyer in India but it may well be the most consequential. What is playing out right now is not confusion for its own sake; it is the early friction of a fuel transition that could reshape what Indians pay at the pump for decades. In the meantime, stay informed, service regularly and watch the flex-fuel pipeline.