🗞️ Why in News The Ministry of Power notified on 29 September 2026 the third phase of Corporate Average Fuel Efficiency (CAFE-III) norms for passenger cars, in force from 1 April 2027 to 31 March 2032. The fleet fuel-consumption benchmark tightens from 3.996 to 3.3273 litres per 100 km, about 16.7 per cent over five years; each battery electric vehicle counts as three vehicles in a carmaker’s fleet average; and the proposed concession for small cars under 909 kg has been dropped.
What CAFE Is
CAFE norms cap the average fuel consumption, and therefore the average carbon dioxide emissions, of all the passenger vehicles a manufacturer sells in a year, instead of setting one limit for every model. A carmaker may sell some thirsty SUVs if it sells enough efficient cars, hybrids or EVs to bring the fleet average under its target.
| Feature | Detail |
|---|---|
| Legal basis | Energy Conservation Act, 2001; administered by the Bureau of Energy Efficiency (BEE) under the Ministry of Power |
| Vehicles covered | M1 category passenger vehicles (cars, SUVs, MPVs with up to eight seats besides the driver), manufactured or imported for sale in India |
| History | First introduced in 2017; second phase from 2022-23; first CAFE-III proposal in 2024, revised drafts in September 2025 and July 2026 |
| CAFE-III period | FY 2027-28 to FY 2031-32, in a 3+2 year compliance-block structure |
| Test cycle | Modified Indian Driving Cycle (MIDC); results expressed in petrol-equivalent litres per 100 km |
The Target Formula
Each manufacturer’s target depends on the weighted average unladen weight of the vehicles it sells:
Target = a × (W − b) + c
- W = the manufacturer’s average fleet weight; b = reference weight, fixed at 1,229 kg.
- c = the baseline target: 3.9960 L/100 km in FY28, falling to 3.3273 L/100 km in FY32.
- a = how much the target changes per kilogram above or below the reference: 0.00158 in FY28, 0.00131 in FY32.
A heavier fleet gets a somewhat higher permitted figure, a lighter fleet a lower one. Earlier drafts used a lower reference weight (1,170 kg) and a steeper slope.
The small-car fight. A September 2025 draft offered an extra 3 g CO2/km benefit for petrol cars weighing up to 909 kg, a segment dominated by one manufacturer. Rival carmakers objected that the carve-out favoured a single company; the dispute reportedly reached the Prime Minister’s Office. The final rules contain no separate small-car category: weight is handled only through the common formula.
The Credits That Reward Cleaner Technologies
| Instrument | How it works |
|---|---|
| Volume derogation (“super credits”) | Each BEV or range-extended EV counts as 3 vehicles; plug-in hybrids and flex-fuel strong hybrids 2.5; strong hybrids 1.6; flex-fuel vehicles 1.1 |
| EV energy accounting | EV consumption in kWh per 100 km, converted to petrol-equivalent with a factor of 0.1028 |
| Carbon Neutrality Factor (CNF) | Credit for low-carbon fuels: 8 per cent for vehicles on E20 or higher petrol, 22.3 per cent for flex-fuel ethanol vehicles; covers biofuels and compressed biogas |
| Eco-innovations | Start-stop, tyre-pressure monitoring, regenerative braking, six-speed-plus transmissions, efficient air-conditioning and others: 1 g CO2/km each, capped at 9 g CO2/km |
| Credit passbook | Over-achievers earn credits, under-achievers incur debits; credits carry forward within a block and can be traded between manufacturers |
| Buyout | A manufacturer in deficit can buy credits from the BEE at Rs 2,500 per g CO2/km in FY28, rising Rs 500 a year to Rs 4,500 in FY32 |
| Small makers | Firms selling fewer than 1,000 eligible vehicles in a period are exempt from the target, but must report |
Why It Matters
1. Climate and oil. Road transport runs mostly on imported oil. Tighter fleet averages cut both CO2 emissions and the import bill, and support India’s Nationally Determined Contribution and net zero by 2070.
2. A technology-neutral nudge, with a tilt. The rules reward several pathways (EVs, hybrids, flex-fuel, ethanol blending, efficiency technologies), but the 3x multiplier makes battery EVs the most valuable compliance tool, as the Indian Express explainer notes.
3. Industrial policy by regulation. Credit trading creates a market in which EV-heavy makers can sell compliance to others. That can fund EV investment, as it has in other markets, but also lets laggards buy time.
4. Fair treatment of small cars. India’s market is built on light, affordable petrol cars. Dropping the carve-out avoids a rule tailored to one firm; folding weight into one formula keeps some relief for light fleets without a separate category.
5. Real-world gap. Lab-cycle (MIDC) figures understate on-road consumption. The credibility of CAFE depends on conformity of production checks and transparent public reporting of each maker’s performance.
UPSC Relevance
GS Paper 3. Conservation, environmental pollution and degradation; infrastructure: energy; science and technology (electric vehicles, biofuels). GS Paper 2. Statutory, regulatory bodies (BEE).
A question worth preparing. “Fleet-average standards such as CAFE are more efficient than model-wise limits in decarbonising road transport.” Examine with reference to India’s CAFE-III norms. (250 words)
The Mains framing. Explain the fleet-average idea and the weight-based formula. Use the CAFE-III numbers (16.7 per cent tightening, 3x super credit, CNF, credit trading, BEE buyout). Discuss benefits (oil imports, emissions, EV push, flexibility) and concerns (super credits dilute real cuts, lab-versus-road gap, small-car affordability). Conclude with complementary measures: charging infrastructure, battery manufacturing, ethanol policy and transparent compliance reporting.
📌 Facts Corner, Knowledgepedia
Prelims, statement-ready facts:
- CAFE-III notified by the Ministry of Power on 29 September 2026; applies 1 April 2027 to 31 March 2032.
- Benchmark tightens from 3.996 to 3.3273 L/100 km, about 16.7%; reference weight 1,229 kg.
- Super credits: BEV/REEV 3, PHEV and flex-fuel strong hybrid 2.5, strong hybrid 1.6, flex-fuel 1.1.
- Carbon Neutrality Factor: 8% for E20-plus petrol vehicles, 22.3% for flex-fuel ethanol vehicles.
- BEE credit buyout: Rs 2,500 per g CO2/km (FY28), rising to Rs 4,500 (FY32).
- Legal basis: Energy Conservation Act, 2001; administered by the BEE; covers M1 vehicles.
Prelims, the traps:
- CAFE limits fuel consumption and CO2 across a fleet; Bharat Stage VI limits tailpipe pollutants (NOx, PM) per vehicle.
- CAFE comes under the Ministry of Power (BEE), not the Ministry of Road Transport, which notifies BS norms.
- The 909 kg small-car concession was in a draft; the final rules dropped it.
Mains, arguments and keywords:
- Fleet averaging; super credits; credit trading; carbon neutrality factor; technology neutrality; lab-versus-road gap.
Interview, be ready for:
- “Do super credits for EVs weaken the climate benefit of CAFE?” Yes in the short run, since each EV offsets more petrol cars; justify them as a time-bound push for a nascent technology, tapering later.
Sources: The Hindu, The Indian Express, explainer, Business Standard, Bureau of Energy Efficiency
Source: CAFE-III Notified: Tighter Fuel-Efficiency Norms for Cars from 2027, Triple Credit for EVs, No Small-Car Carve-Out — Ujiyari.com | Free UPSC & State PCS Current Affairs
