Overview
- India’s Ministry of Power and the Bureau of Energy Efficiency, which released a revised Stage 3 draft on Monday, set the rules to start on April 1, 2027 with tightening through FY32.
- The draft flattens the fleet-efficiency curve by cutting the slope to 0.00158 in FY28, raising the reference weight to 1,229 kg, and lifting baseline consumption to 3.996 L/100 km.
- Smaller cars gain more headroom because limits scale with mass, and the earlier 3 g CO2/km concession for sub‑4‑metre petrol cars has been removed and folded into the new curve.
- Battery-electric models still earn super‑credits counted as three vehicles, while multipliers for strong hybrids and flex‑fuel vehicles drop to 1.6 and 1.1.
- Manufacturers can trade compliance credits and makers under 1,000 units are exempt, yet large penalties remain possible, shaping pricing, EV and hybrid plans, and model lineups.