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In October 2026, which fuel grade was added alongside E85 for ethanol flex-fuel vehicle testing under the amended Central Motor Vehicles Rules?

Question and options

In October 2026, which fuel grade was added alongside E85 for ethanol flex-fuel vehicle testing under the amended Central Motor Vehicles Rules?

  1. E10
  2. B10
  3. E100
  4. B100

Answer and explanation

Correct answer: C - E100

The amendment was notified on 23 October 2026. It added E100 for ethanol flex-fuel testing and dealt separately with biodiesel test fuel.

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