In an initiative designed to enhance passenger vehicle mileage across the country and accelerate the adoption of cleaner automotive technologies, the government has overhauled Corporate Average Fuel Economy (CAFE) standards. The revamped regulatory framework is scheduled to take effect on April 1, 2027, remaining operational until March 31, 2032. Under these revised guidelines, carmakers selling passenger vehicles in the domestic market will be required to improve the overall average fuel efficiency of their fleets by approximately 16.7 percent across the five-year period. This mandate will directly shape the engineering, powertrain choices, and fleet compositions of automobile brands operating in the country.
Progressive Fuel Consumption Benchmarks
The revised regulatory roadmap establishes progressively demanding fuel consumption benchmarks for passenger vehicle manufacturers each year. For financial year 2027-28, the fleet-wide consumption target has been pegged at 3.996 litres per 100 kilometres. By the conclusion of the cycle in financial year 2031-32, this benchmark will contract to 3.3273 litres per 100 kilometres, reflecting the targeted 16.7 percent efficiency gain. Additionally, the reference vehicle curb weight utilized in these calculations has been revised upward from 1,082 kg to 1,229 kg. This recalibrated baseline eases compliance pressures for lightweight vehicles, while heavier passenger models will need to deploy substantially more efficient technologies to meet their obligations.
Super Credits for Clean Powertrains
Automakers have been granted technological flexibility to fulfill their mandated fleet targets across various propulsion options. Battery electric vehicles (BEVs), range-extended electric vehicles, plug-in hybrids, strong hybrids, and flex-fuel variants will qualify for super credits through volume derogation factors. These credits allow manufacturers to offset the emissions of conventional internal combustion models by leveraging sales volumes of electrified and low-emission vehicles, effectively easing corporate average compliance.
Incentives for Renewable Fuels and Efficiency Tech
The regulatory structure also incorporates a carbon neutrality factor to account for renewable and low-carbon fuels, including ethanol-blended petrol, compressed biogas (CBG), and various biofuels. In tandem, the number of officially recognized fuel-saving automotive technologies has been expanded from 4 to 12. Automakers deploying these qualifying features can claim an allowance of 1 gram of carbon dioxide per kilometre per technology, subject to an aggregate regulatory ceiling of 9 grams of carbon dioxide per kilometre.
Multi-Year Compliance and Credit Banking
To provide practical flexibility for manufacturers managing dynamic model cycles, the compliance mechanism permits companies to balance targets across a multi-year window of two to three years. Carmakers outperforming their mandated fuel economy thresholds will be permitted to bank their surplus regulatory credits, carrying them forward to offset requirements in subsequent operating years.
