The directive to phase out 10-year-old diesel vehicles and 15-year-old petrol vehicles stems from a National Green Tribunal (NGT) order upheld by the Supreme Court. The Delhi government has already deregistered these vehicles.
Experts said that denying fuel to older vehicles is a policy, focused on enforcement, which has been difficult as many owners wish to keep their vehicles.
“Fleet renewal is a critical strategy for reducing emissions, as older vehicles emit significantly more pollutants than newer models. It would be even more effective to incentivise their replacement with zero-emission electric vehicles,” Roychowdhury said.
Severe air pollution in Delhi-NCR remains a major issue. On December 16, 2024, Stage 4 of the Graded Response Action Plan (GRAP), the strictest level of anti-pollution measures, was enforced as the air quality index (AQI) exceeded 400, indicating “severe” conditions. This marked the second instance in the last winter, with the first triggered on November 18 due to stubble burning, which pushed AQI to 494.