The Centre’s CAFE-3 standards will require carmakers to reduce the average carbon dioxide emissions of their vehicle fleets between 2027-28 and 2031-32. The rules are designed to make cars more fuel-efficient and encourage electric and hybrid models, but the structure also raises a larger question for India’s cities: will manufacturers be pushed towards rapid electrification, or will they be able to meet the targets through a broader mix of technologies and credits?
Corporate Average Fuel Economy, or CAFE, rules regulate the average efficiency and emissions performance of a car company’s portfolio rather than treating every model in isolation. This matters because a manufacturer can sell a mix of larger, higher-emission vehicles and cleaner models, provided the average performance of its fleet remains within the prescribed limit.
Under CAFE-3, the rules will apply for five financial years from 2027-28 to 2031-32. For a vehicle weighing 1,229 kilograms, the average emissions limit is currently about 94.8 grams of carbon dioxide per kilometre. By 2031-32, that limit is expected to fall to about 78.9 grams per kilometre. The reduction amounts to approximately 17% over five years.
That target is important for urban India because private vehicles remain part of the daily transport system in cities where public transport coverage, last-mile connectivity and travel patterns vary widely. A reduction in the average emissions of new vehicles can lower the carbon intensity of future car use, but the effect will depend on how quickly cleaner vehicles enter the market and how the rules influence the models that companies choose to sell.
The design of CAFE-3 gives manufacturers several routes to meet the fleet-level target. Battery electric vehicles and range-extender electric vehicles will receive the highest incentive, with a three-times credit. Plug-in hybrids and flex-fuel hybrids will receive a 2.5-times credit, while strong hybrids will receive a 1.6-times credit.
These credits allow a cleaner vehicle to have a larger effect on a company’s calculated fleet average. In practical terms, a carmaker with a growing electric or hybrid portfolio can use that performance to offset higher emissions from other vehicles. The system therefore links the compliance burden of the entire portfolio to the pace and composition of new-technology sales.
CAFE-3 also recognises fuel and efficiency interventions beyond battery-electric vehicles. Cars using petrol blended with 20% ethanol, or E20, will receive an 8% emissions concession. Flex-fuel cars will receive a 22.3% concession, while compressed natural gas vehicles will receive a concession of at least 5%.
Companies can also claim up to an additional 9 grams of carbon dioxide per kilometre in concessions by using energy-saving technologies. The report says these claims will subsequently be examined through testing. That verification mechanism is significant because the effectiveness of a fleet standard depends not only on the headline target but also on how performance is measured in real compliance decisions.
The rules include a market-based compliance option. If a company’s average vehicle emissions exceed the prescribed limit, it can buy credits from another company. It may also purchase credits from the Bureau of Energy Efficiency. The reported price range for these credits is Rs 2,500 to Rs 4,500 per gram of carbon dioxide per kilometre.
This creates flexibility for manufacturers, but it also means that compliance will not necessarily require every company to make the same technological transition. A company may invest in electric vehicles, expand hybrid sales, use approved fuel technologies, improve vehicle efficiency or purchase credits. The outcome will depend on the relative cost of each option and the strength of demand for the vehicles associated with them.
The policy’s most contested feature is its treatment of electric-vehicle adoption. CAFE-3 is based on an estimated electric-vehicle share of about 12% of car sales over the next five years. The report notes that electric vehicles accounted for about 3% of sales earlier, while their share has reached around 8% in recent months. On that comparison, a 12% assumption represents growth, but not necessarily a demanding acceleration from the market’s current direction.
The distinction between an emissions target and an electrification target is central. A company can reduce average carbon dioxide emissions through several technologies without moving its sales mix as rapidly towards battery-electric cars. That may make the rule easier to implement, especially while charging infrastructure, vehicle prices and consumer preferences remain uneven across cities. It may also reduce the direct pressure on manufacturers to shift their core product strategies towards electric vehicles.
Amit Bhatt, managing director of the International Council on Clean Transportation in India, is quoted in the report as saying that existing company announcements and regulatory documents indicate a combined electric-vehicle sales commitment of about 20% by 2030. He also said that the final CAFE standards could be met with an electric-vehicle share of around 12%, because the rules provide manufacturers with multiple compliance routes.
Bhatt’s observation highlights the difference between what the industry may be capable of doing and what the regulation requires it to do. If manufacturers reach higher electric-vehicle sales because of market demand, product launches or other policies, CAFE-3 may operate as a supporting framework. If the market slows, however, the availability of credits and concessions could allow companies to remain within the rules without matching the most ambitious electrification pathway.
Former G20 Sherpa Amitabh Kant has questioned this aspect of the policy. The report quotes him as describing CAFE as a missed opportunity because it does not clearly establish that the industry must move towards electrification. His criticism focuses on the regulatory signal: emissions reduction is mandatory, but a particular technology pathway is not.
That approach reflects a policy choice. Technology-neutral rules can give manufacturers room to use solutions suited to different vehicle segments and consumer conditions. Hybrids, CNG vehicles, flex-fuel models and efficiency improvements may help reduce emissions where battery-electric adoption remains constrained. At the same time, giving several technologies similar compliance value can weaken the pressure to develop the charging, manufacturing and product ecosystem required for faster electrification.
For consumers, the immediate impact is unlikely to be a single uniform price increase. The report says cleaner technologies may raise vehicle costs modestly because they require additional equipment, software, batteries, electric motors or other efficiency systems. The scale of any increase will vary by model and technology. Consumers may also gain access to a wider range of fuel-efficient vehicles, potentially reducing fuel consumption over the period of ownership.
The cost question is particularly relevant in a market where vehicle purchase prices shape access to private mobility. If compliance costs are passed on to buyers, cleaner vehicles could become more expensive even as their running costs improve. If companies absorb part of the cost or achieve economies of scale, the effect on retail prices could be smaller. The supplied report does not establish how manufacturers will distribute these costs across models.
CAFE-3 also has an institutional dimension. The rules are administered through fleet-level performance requirements, technology credits, concessions and a credit market involving companies and the Bureau of Energy Efficiency. This makes monitoring and testing critical. The reported provision for checking efficiency claims through testing indicates that the regulatory system will need to distinguish between claimed performance and verified performance.
The policy therefore operates on two levels. At the vehicle level, it pushes companies towards lower fuel consumption and lower carbon dioxide emissions. At the industry level, it lets manufacturers balance different technologies and portfolios through credits. The first objective is clearly stated in the emissions trajectory from 94.8 grams to 78.9 grams per kilometre for the specified vehicle weight. The second determines how strongly the rules influence the composition of the market.
The urban significance extends beyond the cars sold during the five-year period. New-vehicle standards affect the future stock of vehicles on city roads, while the existing fleet continues to operate for years. CAFE-3 can change the emissions profile of new additions to that fleet, but the report does not provide a timetable for how quickly this would alter total urban transport emissions. That outcome would depend on sales volumes, vehicle use, replacement cycles and the actual performance of different technologies.
The policy also does not settle the wider infrastructure questions surrounding electric mobility. The report refers to the growing share of EV sales but does not provide a complete account of charging availability, reliability or distribution across cities. Without that information, the CAFE framework can establish demand-side pressure for cleaner vehicles but cannot by itself show whether the supporting urban systems are ready for a rapid transition.
What the evidence confirms is that CAFE-3 will tighten the emissions expectations placed on carmakers and create incentives for electric, hybrid, flex-fuel, CNG and efficiency technologies. What remains unresolved is how much of the reduction will come from genuine fleet transformation, how much will come from credits and concessions, and whether the framework will generate faster electrification than the reported 12% assumption.
The key milestones will be the implementation of the standards from 2027-28, the testing of efficiency and emissions claims, the operation of the credit market and the actual electric-vehicle share reached during the period. Those developments will show whether CAFE-3 functions primarily as an emissions-control mechanism or becomes a stronger instrument for reshaping India’s urban vehicle market.
