India has notified the new CAFE-III fuel efficiency norms for passenger vehicles, bringing another major change to the country’s automobile regulations. The rules will apply from April 2027 and are designed to reduce average fuel consumption and carbon dioxide emissions across manufacturers’ vehicle fleets.
What Are CAFE-III Fuel Efficiency Norms?
CAFE stands for Corporate Average Fuel Economy. Unlike a rule that sets a single mileage requirement for every car, CAFE norms assess the average fuel consumption of the passenger vehicles sold by an automaker.
India introduced the first CAFE standards in 2017-18, followed by the second phase in 2022-23. The third phase will cover the five financial years from April 1, 2027, to March 31, 2032. The rules apply to M1 category passenger vehicles under the Central Motor Vehicle Rules.
The important point for buyers is that CAFE-III is primarily a manufacturer-level regulation. It does not mean that every petrol or diesel car sold after April 2027 will have to deliver a specific mileage figure.
Instead, manufacturers will have to ensure that the average fuel consumption of their overall eligible fleet stays within the prescribed annual target.
New Fuel Efficiency Targets Will Become Stricter
The notified framework gradually tightens the fuel consumption target during the five-year period.
For a manufacturer with a weighted average vehicle mass of 1,229 kg, the standard works out to 3.996 litres per 100 km in 2027-28. This falls progressively to 3.3273 litres per 100 km by 2031-32.
The calculation is weight-sensitive. The formula takes into account the weighted average unladen mass of the vehicles sold by a manufacturer. This means the regulatory target is not identical for every automaker and depends partly on the composition of its vehicle fleet.
For consumers, this could gradually influence which engines, technologies and vehicle sizes manufacturers choose to develop and sell in India.
Will CAFE-III Make Petrol and Diesel Cars More Expensive?
The new rules do not directly impose a CAFE-III tax on buyers. However, manufacturers may have to spend more on technologies that improve fuel efficiency and reduce emissions.
Automakers have several ways to meet their fleet targets. They can improve conventional petrol and diesel engines, introduce more hybrids, expand electric vehicle offerings or use other technologies recognised under the regulations.
The additional development and manufacturing costs could influence vehicle prices, although the actual effect will depend on individual manufacturers, models and market conditions.
Some industry analysis has suggested that higher-emission internal combustion engine vehicles could face greater pricing pressure as companies adjust their portfolios. That remains a potential market effect rather than a government-mandated price increase.
Electric Cars Get a Major Compliance Advantage
One of the biggest features of CAFE-III is the treatment of battery electric vehicles.
Under the notified framework, battery electric vehicles and range-extended electric vehicles receive a volume derogation factor of 3.0. In simple terms, one eligible EV can count as three vehicles when calculating the manufacturer’s fleet compliance volume.
Plug-in hybrids and certain strong hybrid vehicles also receive additional weightage, although their factors are lower than those for battery EVs.
This gives manufacturers a regulatory incentive to increase the share of cleaner powertrains in their portfolios. It does not, however, mean that every EV will automatically become cheaper or that every petrol car will become more expensive. Pricing will continue to depend on manufacturing costs, demand, competition, taxes and company strategy.
No Separate CAFE-III Benefit for Small Cars
The final rules have also removed a proposed special concession for very small petrol cars.
An earlier draft had included a separate benefit for petrol cars weighing up to 909 kg. The final notification does not retain that specific concession.
This matters for India’s small-car market, where compact hatchbacks have traditionally played an important role, particularly among first-time buyers and consumers in smaller cities.
Manufacturers will therefore need to consider the overall efficiency of their fleets rather than relying on a separate CAFE concession for small petrol cars.
What CAFE-III Means for Car Buyers
For someone planning to buy a car in 2026 or 2027, CAFE-III is unlikely to change the purchasing process overnight.
The rules are aimed at manufacturers rather than individual car owners. Buyers will still compare price, mileage, engine performance, safety features, maintenance costs and resale value.
However, the regulations could gradually influence the products available in showrooms.
Automakers may increase investment in hybrid technology, electric vehicles, efficient engines, regenerative braking and other fuel-saving technologies. This could lead to more efficient models across different price segments over the coming years.
For buyers in Tier-2 and Tier-3 cities, the impact could be particularly relevant as affordable EVs and hybrids become more important parts of manufacturers’ portfolios. Availability of charging infrastructure, service networks and long-distance usability will still remain important considerations.
How Manufacturers Can Meet the New Rules
CAFE-III does not rely on a single technology. The framework gives manufacturers multiple compliance routes.
Companies can improve the efficiency of their existing vehicles, increase sales of EVs and hybrid models, use eligible technology improvements and manage credits within the regulatory system.
Manufacturers can also trade compliance credits with other companies under the framework. The notified system provides a mechanism for companies with surplus credits to transfer them to manufacturers that need additional compliance support.
The government has also established provisions for buying credits from the Bureau of Energy Efficiency under specified conditions. This creates a compliance mechanism rather than requiring every automaker to follow exactly the same technology strategy.
CAFE-III Will Also Bring More Fuel Economy Data
Another important change is greater reporting of vehicle efficiency data.
From April 1, 2027, manufacturers will have to declare CO2 performance for each model using both the Modified Indian Driving Cycle and the Worldwide Harmonized Light Vehicles Test Procedure, subject to the applicable regulatory framework.
Manufacturers will also have to submit state-wise sales information as part of their annual compliance reporting.
This could eventually provide consumers with more information for comparing vehicles, although test-cycle figures should not be treated as an exact prediction of the mileage a driver will get in daily traffic. Driving style, road conditions, traffic, vehicle load and weather can all affect real-world fuel consumption.
What Happens From April 2027?
CAFE-III will officially apply from April 1, 2027, rather than October 1, 2026.
The first compliance year will be 2027-28, followed by progressively tighter targets through 2031-32. The first compliance block covers three years, while the second covers two years.
This gives automakers time to adjust their product strategies, powertrain mix and technology investments before the standards become applicable.
For consumers, the bigger changes are therefore likely to appear gradually through new model launches, powertrain choices and manufacturer pricing strategies rather than through an immediate change to existing cars.
What Buyers Should Watch Before Purchasing
People planning to buy a car should not choose a vehicle simply because it is marketed as CAFE-compliant. CAFE-III is a fleet-level regulation and does not by itself indicate that one particular car is more economical than another.
Instead, buyers should check the certified fuel efficiency or energy consumption figure of the specific model, compare petrol, diesel, hybrid and EV running costs, and consider the availability of fuel or charging infrastructure in their area.
For buyers in smaller cities and towns, service availability and access to charging stations can be just as important as the official efficiency figure.
The longer-term effect of CAFE-III will depend on how manufacturers respond. The rules create stronger incentives for efficiency and cleaner powertrains, but the final impact on car prices, model availability and consumer choices will become clearer as companies begin adjusting their portfolios ahead of April 2027.
Key Takeaways
- CAFE-III has been notified, but its passenger-vehicle requirements begin from April 1, 2027.
- The rules regulate manufacturers’ fleet-average fuel consumption rather than setting one mileage figure for every car.
- Battery EVs receive a 3x volume factor, while several hybrid technologies also receive compliance benefits.
- Buyers could see more efficient engines, hybrids and EVs over time, but CAFE-III does not directly mandate higher or lower prices for individual cars.
FAQ
What is CAFE-III in India?
CAFE-III is the third phase of India’s Corporate Average Fuel Economy standards. It sets fleet-level fuel consumption and emissions requirements for eligible passenger vehicle manufacturers.
When will CAFE-III start?
CAFE-III will apply from April 1, 2027, and remain in force through March 31, 2032.
Will CAFE-III directly increase car prices?
The rules do not directly impose a price increase on consumers. However, manufacturers may face additional technology and compliance costs, which could influence pricing strategies for some models.
Do electric cars get an advantage under CAFE-III?
Yes. Battery electric vehicles and range-extended electric vehicles receive a 3.0 volume derogation factor for compliance calculations. Certain hybrid and flex-fuel vehicles also receive specified factors.
