A Mexico City District court last week accepted requests by environmentalists to suspend implementation of a regulatory change that would allow up to 10% ethanol in automotive gasoline in Mexico. As Mexico Business Blog reported in July and August, Mexico’s Energy Regulatory Commission (CRE) published modifications to the country’s fuel quality standard, NOM-016-CRE-2016, in June permitting the increase in ethanol content. Environmental groups oppose the change arguing it will worsen air quality, and other groups with vested interests also raised objections. Last week’s granting of an injunction suspending the rule change for the moment reverts the NOM back to its previous language permitting up to 5.8% ethanol content, although ethanol-mixed gasoline is not currently sold in Mexican gas stations. In the wake of the latest injunction, both the CRE and its adversaries on the topic have a number of legal maneuvers open to them but local analysts are opining that the issue will remain tied up in the courts at least until next year.