Bro copied the standards for Ethanol policy from USA, but didn't copy their testing results and implementation. Even today, E20 is not mandated in the USA. Standard American gas stations predominantly sell E10 fuel, which holds over 95% of the market share. Higher ethanol blends like E15 have only a 1–2% share. The USA tested E15 and E20 across 86 vehicle models and 6 million miles (96 lakh miles) in 2011, based on which E15 was approved only for new cars that were E15 compliant, while older cars continued to get E10. E20 was not mandated due to engine wear concerns in non-compliant cars, which were in the majority in the USA. And most importantly, unlike India, the USA made their studies public. So what kind of policymaking is this? If you want to copy, either copy everything: the standards, the test results, the implementation, the way ahead, or don't copy anything at all.