Featured image credit: Image: DeFacto via Wikimedia Commons (CC BY-SA 3.0). Source
India’s next set of fuel efficiency rules for passenger cars, known as CAFE III, takes effect from April 2027 and runs to 2032. In September 2026 the government dropped a proposed concession for small petrol cars from the draft, after opposition from carmakers who argued it was written for one company. That single deletion changes the economics of selling electric cars in India more than any subsidy announcement this year.
Most coverage has treated CAFE III as a fuel-economy story. It is really an EV story, because of how the rules count electric vehicles.
By Piyush P. Yadav
What CAFE III actually requires
Corporate Average Fuel Efficiency rules do not regulate individual cars. They regulate the sales-weighted average across everything a manufacturer sells in a year. A company can sell a thirsty large SUV provided it sells enough efficient cars to pull the fleet average down to the target.
CAFE III tightens that target progressively across five years.
| Year | Fleet fuel consumption target | Equivalent CO2 |
|---|---|---|
| 2027-28 | 3.996 litres per 100 km | 94.76 g/km |
| 2031-32 | 3.3273 litres per 100 km | 78.90 g/km |
To put 94.76 grams per kilometre in perspective, a typical petrol compact SUV sold in India today sits well above that figure. Meeting a fleet average in the 90s means a manufacturer’s average car has to be materially more efficient than its average car today, or the mix has to change.
The super credit is the real EV lever
Here is the mechanism that matters. The draft counts each electric vehicle sold as three units in the fleet average calculation.
An EV emits zero grams per kilometre at the tailpipe. Counting it three times means one electric car sale does the mathematical work of three zero-emission cars when averaging the fleet. A manufacturer that sells 10,000 EVs gets credited as though it sold 30,000 zero-emission vehicles.
Work through what that does. A company selling 500,000 cars averaging 120 g/km needs to pull roughly 25 g/km out of its fleet average. It can do that by re-engineering every petrol engine in the range, which is slow and expensive. Or it can sell a meaningful number of electric cars and let the triple counting do the arithmetic.
| Compliance route | Cost to manufacturer | Speed | Revenue effect |
|---|---|---|---|
| Re-engineer petrol engines | Very high, per platform | Slow, tied to model cycles | No new revenue stream |
| Add mild and strong hybrids | Moderate | Medium | Higher price, thin margin |
| Sell more electric cars | High upfront, falling | Fast once product exists | New segment, builds scale |
| Pay the penalty | Direct financial hit | Immediate | Pure loss |
For any manufacturer that already has electric cars in production, the third row is the cheapest path. That is why CAFE III functions as an EV mandate without ever using the word mandate.
The small car fight, and why it was really about EVs
An earlier draft offered roughly 3 grams per kilometre of relief to petrol cars weighing 909 kg or less. On the surface that is a pro-small-car, pro-affordability measure. India has been losing small car volume for years and the argument for protecting the segment is real.
Tata Motors and Mahindra objected, arguing the carve-out effectively benefited one company. Maruti Suzuki holds roughly 95 per cent of India’s small car market, so a weight-based concession set at 909 kg was, in practice, a concession to a single manufacturer’s product mix.
The government removed it in favour of a flatter curve applied to everyone.
The EV consequence is direct. With the small car relief in place, a manufacturer heavy in sub-909 kg petrol cars could have met a meaningful chunk of its target without selling electric cars at all. With the relief gone, every manufacturer faces the same curve, and every manufacturer has the same shortest path to compliance. That path runs through EVs.
Who this helps and who it pressures
Manufacturers with EVs already selling
Tata and Mahindra are the obvious beneficiaries. Both have electric ranges in the market and both pushed for the flatter curve. Their existing EV volumes convert into compliance headroom from day one. The scale of that advantage is visible in the sales data, and we broke down the standings when India’s electric car sales hit a record August 2026 high.
Manufacturers heavy in efficient petrol cars
A company with a fleet of small, genuinely efficient petrol cars is not badly placed on raw numbers. It is badly placed on trajectory, because the target keeps tightening to 2032 and petrol engine efficiency has a ceiling. The pressure to add electric volume rises every year.
Manufacturers heavy in large SUVs
This is the hardest position. Large, heavy vehicles carry high fleet-average penalties and there is no engineering fix that closes a gap that size. These companies need either hybrids at scale or electric versions of their volume models.
What it means for buyers
Three practical consequences, in rough order of how soon you will notice them.
More electric models, faster
Product plans that were pencilled in for 2029 get pulled forward, because each year of delay is a year of compliance risk. Expect more electric variants of existing nameplates rather than only ground-up new models, since a variant reaches market faster.
Electric cars get priced to sell
This is the subtle one. If an EV sale is worth three units of compliance credit, a manufacturer has a reason to discount that EV beyond what unit economics alone would justify. The compliance value is real money avoided in penalties. That changes the calculation behind festive season EV discounts, which may persist well past the festive window.
Petrol car prices drift up
Meeting a tighter target on combustion engines costs money, and that cost lands in the sticker price. The gap between petrol and electric narrows from both ends. That is a slower-moving version of the structural issue we examined in why electric cars cost more than petrol cars in India.
How this sits alongside the rest of India’s EV policy
India’s EV policy has run mostly on demand-side cash: FAME, then PM E-DRIVE, then state incentives. That approach has been retreating. The central two-wheeler subsidy closed on 31 July 2026, and state benefits have been diverging sharply across states.
CAFE III is a different instrument entirely. It does not pay anyone to buy an EV. It penalises a manufacturer for not selling enough of them. The cost sits with the industry rather than the exchequer, which is precisely why governments favour this approach once a market has enough product in it to respond.
| Instrument | Who pays | Who it targets | Status |
|---|---|---|---|
| PM E-DRIVE cash subsidy | Government | Buyers | Two-wheelers closed July 2026 |
| State road tax waivers | State government | Buyers | Diverging, some rollbacks |
| 5 per cent GST on EVs | Government revenue | Buyers | Continuing |
| CAFE III | Manufacturers | Manufacturers | From April 2027 |
The same logic shows up on the supply side, where new traction motor localisation rules for e-buses and e-trucks took effect on 1 September 2026. Policy is shifting from paying buyers to setting conditions producers must meet.
The open questions
Three things are not settled.
Whether the super credit survives at three. A triple multiplier is generous. Regulators elsewhere have phased super credits down over time precisely because they let a fleet average look cleaner than the real-world fleet is. If the multiplier drops, compliance gets harder and the incentive to discount EVs weakens.
Whether penalties will actually be enforced. A rule with a penalty nobody collects is a suggestion. Indian CAFE penalties have been contested before.
Whether charging keeps pace. Compliance pressure can push electric cars into showrooms faster than charging infrastructure absorbs them. India’s public charging network has grown quickly, passing 18,000 chargers, but that base against a fleet growing under regulatory pressure is a genuine constraint.
The bottom line
CAFE III does something no Indian EV policy has done before. It makes selling electric cars the cheapest way for a manufacturer to stay legal. Subsidies made EVs attractive to buyers and could be withdrawn when the money ran out, as they were in July 2026. A fleet emission target cannot be withdrawn without rewriting the rule, and it applies for five years.
For anyone deciding when to buy an electric car in India, the useful read is this: the manufacturers now have a regulatory reason to want your EV purchase, worth three times what a normal sale is worth to them. That shows up as availability and as price.
Sources & Further Reading
- Autocar India — Proposed concessions for small cars in 2027 CAFE 3 norms dropped
- International Energy Agency — CAFE III CO2 standards for light-duty vehicles, 2027 to 2032
- Outlook Business — Govt revises small-car concession from CAFE III norms after pushback
- Autocar India — Draft CAFE 3 norms and emission targets
Frequently Asked Questions
When do CAFE III norms come into force in India?
CAFE III applies to passenger vehicles from April 2027 and runs through to 2032, with the fleet average target tightening each year from 3.996 litres per 100 km in 2027-28 to 3.3273 litres per 100 km by 2031-32.
What is the EV super credit under CAFE III?
The draft counts each electric vehicle sold as three units in a manufacturer’s fleet average calculation. Because an EV contributes zero tailpipe emissions, triple counting means one EV sale does the mathematical work of three zero-emission cars, making EV sales the fastest route to compliance.
Why was the small car concession removed?
An earlier draft offered around 3 grams per kilometre of relief to petrol cars under 909 kg. Tata Motors and Mahindra objected on the grounds that it effectively benefited a single manufacturer, since Maruti Suzuki holds roughly 95 per cent of India’s small car market. The government replaced it with a flatter curve applying to all manufacturers.
Will CAFE III make electric cars cheaper in India?
Indirectly, yes. Because each EV sale carries compliance value worth avoiding penalties on, manufacturers have a reason to price and discount electric cars more aggressively than unit economics alone would support. At the same time, meeting tighter targets on petrol engines adds cost to combustion cars, narrowing the gap from both directions.