PIB TrackerE85 and E100 written into the motor vehicle rules
MoRTH notified the CMVR amendment that lets flex-fuel vehicles be certified on high-ethanol fuel - a certification rule for new designs, not a fuel mandate for existing cars.
What happened
- The Ministry of Road Transport and Highways notified amendments to the Central Motor Vehicles Rules, 1989 to support flex-fuel vehicles capable of using E85 and other high-ethanol fuels.
- The emission certification provisions now expressly include E100 alongside E85; a vehicle certified for these fuels must meet the emission and safety requirements applicable to its category.
- The Ministry stated that E85/E100 is only for vehicles specifically designed and certified for it, and that compatibility with E10 or E20 alone does not establish suitability for E85.
- It said the notification does not require owners of existing vehicles to switch to E85 or modify their vehicles, now or in future, and told motorists to check the fuel compatibility sticker.
- The notification also updates biodiesel provisions and takes effect on publication in the Official Gazette; the draft had been issued for public comment in April 2026.
For Prelims
- Instrument: an amendment to the Central Motor Vehicles Rules, 1989, notified by MoRTH, to their emission certification provisions. Draft issued in April 2026; final notification October 2026; effective on Gazette publication.
- The E-number: 'E' denotes ethanol and the number its proportion by volume - E10 is 10 per cent, E20 20 per cent, E85 up to 85 per cent, and E100 a fuel consisting predominantly of ethanol.
- How a flex-fuel vehicle works: a single fuel tank; fuel-system components and materials chosen for the approved blends; engine controls that adjust automatically to the fuel's composition, so the user can pick any blend within the certified range.
- Where it is used: flex-fuel technology is already in use in Brazil and the United States; depending on design and certification, a vehicle's range may extend to E85 or to E100.
- The boundary: E85/E100 is only for vehicles specifically designed and certified for it and 'will not be applicable' to vehicles generally on sale or in use; an E10- or E20-compatible vehicle is not thereby E85-ready.
- Existing vehicles: no requirement to switch fuel or modify, now or in future; motorists should check the fuel compatibility sticker and the owner's manual before choosing a fuel at the pump.
- Stated rationale: more domestically produced ethanol reduces dependence on imported crude oil; in suitably designed vehicles it can cut certain exhaust pollutants and life-cycle greenhouse-gas emissions - depending on feedstock and production process.
- Where this sits: ordinary petrol reached a 20 per cent ethanol blend (E20) in 2025; E85/E100 moves the programme from blending more ethanol into all petrol to certifying dedicated vehicles that can run on mostly ethanol.
For UPSC: CMVR 1989 amended: emission certification covers E85 (up to 85% ethanol) and E100 for certified flex-fuel vehicles only; E20-compatible is not E85-ready; existing owners need not switch.
What it is NOT: This is a vehicle-certification rule, not a fuel mandate: it raises no blending level at the pump and obliges no owner of an existing vehicle to change anything. The release is also silent on supply - no retail rollout of E85 or E100, no incentive or tax treatment for flex-fuel vehicles, no feedstock plan, and no date by which certified models are expected on sale.
For Mains
Syllabus: GS3.9 · GS3.14 · Linkage L1
Anchor
E20 was a fuel decision: every car on the road got a 20 per cent blend. E85 and E100 are a vehicle decision: only engines built and certified for them may use them. The ethanol programme's next stage moves from what is in the tank to what the engine is built for.
Substantiation (data)
Emission certification now covers E85 (up to 85 per cent ethanol) and E100 (predominantly ethanol), after ordinary petrol reached a 20 per cent blend in 2025. The amendment was issued as a draft for comment in April 2026 and notified six months later.
Exemplification
Brazil's flex-fuel fleet is the reference the release itself names: one tank, any blend within the certified range, and engine controls that adjust automatically - an arrangement that lets drivers move between petrol and ethanol as relative prices change.
Problematisation
The release concedes the emissions benefit depends 'on the feedstock and production process'. High-ethanol fuel from water-intensive crops can trade an import problem for a water problem, and the notification says nothing about where E85 or E100 will be sold.
Way-forward
Pair vehicle certification with pump availability for E85/E100 and with feedstock diversification beyond water-intensive crops, so the programme does not deepen the food-fuel-water trade-off it is meant to manage.
Position
The Ministry's stated position is choice without compulsion: high-ethanol fuel for vehicles built for it, a clear compatibility sticker for everyone else, and no obligation on any owner of an existing vehicle, now or later.
Deploys into: Energy infrastructure + pollution (GS3.9, GS3.14) · ethanol programme, energy security, vehicular emissions and the food-fuel-water trade-off.
Ministry of Road Transport and Highways · 2026-10-26 · PRID 2328642 · PIB source ↗