India has notified its third set of Corporate Average Fuel Economy (CAFÉ-III) norms, which will apply to passenger cars from 1 April 2027 to 31 March 2032. The notification came this week from the Union Ministry of Power.
If you read only one thing about the framework, let it be this. It sets a clear destination on fuel efficiency, but it does not dictate the route. Carmakers can get there through electric vehicles, hybrids, ethanol, lighter cars or smaller technology fixes. Which mix they choose will decide how these norms play out, and that is a business question as much as a policy one.
How we got here
CAFE norms were notified in 2015 under the Energy Conservation Act and came into force in 2017. The logic is simple. Instead of asking every model to meet the same fuel figure, the rules look at the average across everything a company sells in a year. A maker can have a thirsty SUV in its range as long as the overall average stays within the limit.
The third round took a while. It was first proposed in 2024 and went through several drafts. A June 2024 version offered a 4x super credit for battery electric vehicles and a 5x factor for hydrogen fuel-cell cars. A September 2025 draft added a separate 3 g/km benefit for small petrol cars up to 909 kg. Another draft went out for comments this July. Industry views differed along the way, sometimes sharply. The sharpest split was over small cars. Makers with a large share of compact, lighter models asked for relief for them, while others argued against any weight-specific concession. That is natural when product plans worth thousands of crores are at stake.
The timing has its own logic. The current norms run out in March 2027, so a successor was needed. India also imports close to 90 per cent of its crude oil, so every litre saved on the road helps the import bill. Transport emissions are growing, and the country has climate commitments to keep. And carmakers need years to plan engines and platforms, so early clarity helps them.
What the framework does
The headline figure is a 16.7 per cent improvement in the fleet fuel-consumption benchmark, from 3.996 litres per 100 km in 2027-28 to 3.3273 litres in 2031-32.
Each company’s target depends on the average weight of the cars it sells. The reference weight is now 1,229 kg, up from 1,082 kg in the current framework. In plain terms, a company selling lighter cars gets a lower limit and one selling heavier cars gets a higher one. The target follows the fleet. How weight is treated inside the formula turned out to be the most closely watched part of the final rules.
The separate small-car concession has gone. The 2025 draft had proposed one but the final rules drop it. That does not mean small cars get no help. The weight element of the main formula has been adjusted so that lighter cars keep much of the room the concession was meant to give while heavier cars get little of it. Press estimates put the extra emissions headroom for cars of around 909 kg at roughly 9-17 per cent between FY28 and FY32, compared with heavier cars. These are outside calculations rather than official figures and the real effect will depend on each company’s model mix.
Electric vehicles get the strongest push. A battery electric vehicle counts as three cars when fleet performance is worked out, and so does a range-extended EV. Plug-in hybrids and strong hybrids running on flex fuel get 2.5x. Strong hybrids get 1.6x and flex-fuel vehicles 1.1x. Hydrogen fuel-cell vehicles, which featured in the 2024 draft, are not in the final table.
Then there is the credit system. A company that beats its target earns credits, and one that misses builds up debits, both tracked in a passbook. Credits carry forward within a compliance block, FY28 to FY30 and then FY31 to FY32, and lapse at the end of each. Companies can trade credits, and those with a shortfall can buy from the Bureau of Energy Efficiency at Rs. 2,500 per g CO2/km in FY28, rising by Rs. 500 a year to Rs. 4,500 in FY32. Trading is open only in October each year.
There is more in the fine print. Recognised fuel-saving technologies go up from 4 to 12, each worth 1 g CO2/km up to a cap of 9 g. Ethanol and other renewable fuels earn a carbon neutrality factor. Reporting will be under both the Indian driving cycle and Worldwide Harmonised Light Vehicles Test Procedure (WLTP) and makers selling under 1,000 vehicles a year are exempt from the target.
Who is affected, and how
Mass-market carmakers will look hardest at the weight formula. India’s market leans towards compact petrol cars, and some companies have a large share there. There is no separate carve-out any more, but the formula itself leaves more room for lighter cars, so the loss of the concession may matter less than it first seemed. The debate now moves from what the rule allows to how each company plans to comply. One senior industry executive noted that the structure could work for carmakers across the board. Much will depend on each company’s model mix and product plans over the next few quarters will tell us more.
Makers of larger vehicles face a different question. SUVs are a growing share of sales. Their fuel limit is higher but they get little of the extra room that lighter cars get, and the yearly tightening means they will need hybrids, EVs or efficiency technology in the mix.
EV, battery and component makers gain the most directly. The 3x factor makes every EV sold a help to the rest of a company’s range, which could make launches more attractive inside diversified groups. It also supports the battery and cell manufacturing the country is building. Suppliers benefit from the longer technology list, from start-stop systems to better glazing and air-conditioning. Expect more conversations between carmakers and their suppliers.
Fuel producers have something to watch too. The credit for higher ethanol blends and flex-fuel vehicles adds a demand signal for the sugar and ethanol industry. Oil marketing companies will see slower petrol demand growth over time, though blending offers a partial offset.
Buyers should see lower running costs. Some price pressure is possible as technology is added, mainly at the entry level. How much reaches the showroom will depend on competition and on how each maker chooses to comply.
Where the debate sits
Not everyone thinks the rules go far enough. Some commentators, including people who have worked on India’s development agenda, see a missed chance to use fuel rules to pull the industry faster towards electric vehicles. They note that EVs are already close to 8 per cent of car sales this financial year, while the norms point to about 11% by 2032. A few have also asked whether the Bureau of Energy Efficiency should sell credits while regulating the market.
These are fair points. The other side deserves equal space. A standard that is too tight, too fast, could hurt affordability in a market where the first time buyer is very price sensitive and it could strain an industry that employs millions. The government had to weigh climate goals, energy security, jobs and cost to the consumer. Reasonable people can land in different places on that balance and the framework reflects one considered view.
On the regulator’s dual role, clear rules on buyout pricing and trading windows will help build confidence as the system settles in.
What comes next
Three things are worth watching. The first is how carmakers adjust their plans before April 2027. Announcements on hybrids, flex-fuel models and EV launches will say a lot. The second is how the credit market behaves once trading opens, since prices, liquidity and transparency will all matter. The third is the move to WLTP reporting, which brings India closer to global testing practice and helps exporters, but needs work on the testing side. States are worth a look as well because many have their own EV incentives that will sit alongside the national rule in ways that are hard to predict.
CAFE-III does not pick one winner. Electric vehicles, hybrids, ethanol and efficiency technologies all have a place, each with a different level of support. To some that looks like flexibility and to others it looks cautious. Both views have merit.
What matters now is how the rules work on the ground. Carmakers will need to plan early, suppliers and fuel producers will want to read their own parts of the framework closely and policymakers will want to watch the first compliance block with an open mind. Over the next five years, these norms will shape what India’s cars look like and how much fuel they need.
The author is a public policy and government affairs strategist.
