With reference to flex-fuel vehicles and ethanol blending in India, consider the following statements: 1. ARAI is the authorized agency for verifying vehicle homologation and type approval. 2. The Central Motor Vehicles Rules, 1989 were amended to permit E100 fuel in flex-fuel vehicles. 3. E100 fuel contains up to 85% ethanol content. Which of the statements given above is/are correct?

Ministry amends Central Motor Vehicles Rules to permit E100 fuel in flex-fuel vehicles

GS3Economy · S&T · Environment · Security· Industry, investment & MSMEs· Prelims + Mains· 27 October 2026

Ethanol blending and flex-fuel vehicles: a GS3 case study on energy security and decarbonization.

Why in news

The Ministry of Road Transport and Highways amended the Central Motor Vehicles Rules, 1989, to permit the use of E100 (100% ethanol) fuel in flex-fuel vehicles to facilitate their homologation.

Background

The amendment modifies Rule 115 and Rule 115E of the Central Motor Vehicles Rules, 1989, to include E100 alongside E85. The Automotive Research Association of India (ARAI) is the authorized agency for verifying technical, safety, and environmental standards for these vehicles.

Facts for Prelims

Act / BillCentral Motor Vehicles Rules, 1989: Amended to permit E100 fuel in flex-fuel vehicles.
FactE100: Fuel comprising 100% ethanol, whereas E85 contains up to 85% ethanol.
BodyAutomotive Research Association of India (ARAI): Authorized agency for vehicle homologation and type approval.
FactIndia reached its E20 fuel blend target in 2025.

Prelims practice question

With reference to flex-fuel vehicles and ethanol blending in India, consider the following statements:

ARAI is the authorized agency for verifying vehicle homologation and type approval.
The Central Motor Vehicles Rules, 1989 were amended to permit E100 fuel in flex-fuel vehicles.
E100 fuel contains up to 85% ethanol content.

Which of the statements given above is/are correct?

(a)3 only
(b)1 and 2 only
(c)1 and 3 only
(d)2 and 3 only

Show answer

Answer: (b) 1 and 2 only — Statements 1 and 2 are correct. Statement 3 is incorrect: E100 fuel comprises 100% ethanol.

For Mains

Q. Discuss how the promotion of flex-fuel vehicles and E100 fuel contributes to India's energy security and decarbonization goals.

Dimensions to cover in your answer

Energy security: Reducing crude oil import dependency through domestic ethanol production
Technological transition: Balancing ethanol-blending benefits against long-term electrification goals
Regulatory framework: Standardizing homologation processes for multi-fuel vehicle safety

Keywords: Flex-fuel vehicles · Homologation · Ethanol blending · Energy security · Decarbonization · Type approval

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