In a bid to address the ongoing air quality crisis in New Delhi, the Delhi government has ramped up enforcement of its 'no PUC, no fuel' rule. From April 26 to 29, 2023, over 15,000 vehicles were denied fuel due to the absence of a valid Pollution Under Control (PUC) certificate. The government reiterated this policy on April 22, 2023, emphasizing that vehicles without valid PUC certificates would not receive fuel. This initiative is part of a broader strategy to mitigate vehicular pollution, which has been a significant contributor to the city's deteriorating air quality. Data shows that on April 26 alone, 3,525 vehicles were turned away, with numbers increasing to 4,012 on April 27, 4,235 on April 28, and 3,906 on April 29. The policy, which has been in place since October 2025, mandates that all vehicles must produce a valid PUC certificate upon request, following the guidelines of the Central Motor Vehicles Rules, 1989. Despite these regulations, many vehicles continue to operate without valid certification, exacerbating pollution levels in the capital.