India should “reform” its emissions norms, referred to as the Company Common Gas Effectivity (CAFE) framework, to align with world greatest practices by incorporating safety mechanisms for small vehicles, a brand new examine by researchers at Nomura has mentioned.
The examine mentioned that India follows a linear weight-based method below its CAFE norms, “whereby a decrease weight implies a extra stringent goal”. This, it mentioned, was totally different from laws in main car markets like america, China, European Union and Japan, the place smaller, light-weight vehicles have relaxed emissions norms. In India, firms resembling market chief Maruti Suzuki have been lobbying in favour of relaxed emission norms for smaller hatchback vehicles, a phase that’s seeing declining gross sales.
“Globally, all main automotive markets together with the US, China, Japan, Korea, and Europe supply regulatory safety to small vehicles below their CAFE frameworks because of their environmental and socioeconomic worth,” the Nomura researchers mentioned within the current examine.
“In distinction, India’s linear weight-based CAFE method penalises lighter autos with disproportionately stringent CO₂ targets. This creates a structural bias the place heavier autos with increased emissions comply simply, whereas small vehicles with decrease emissions fail. Lightweighting, a key decarbonisation technique, is thus disincentivised,” they added.
What are India’s CAFE norms?
The Bureau of Power Effectivity (BEE) launched the CAFE norms in 2017 to control gasoline consumption and carbon emissions from passenger autos. These norms apply to autos operating on petrol, diesel, liquefied petroleum fuel (LPG), compressed pure fuel (CNG), hybrids, and electrical autos (EVs) weighing lower than 3,500 kg. The norms have been tightened at first of monetary 12 months 2022-23, with elevated penalties for non-compliance.
Designed to scale back oil dependency and curb air air pollution, the CAFE norms push automakers to decrease carbon dioxide emissions whereas incentivising the manufacturing of EVs, hybrids, and CNG autos, that are much less carbon-intensive than vehicles that run on fossil fuels.
For 2022-23, the BEE, below the Union Ministry of Energy, required automobile firms of all models offered in the course of the 12 months to attain India’s Company Common Gas Effectivity (CAFE) norms. This meant a gasoline consumption of no more than 4.78 litres per 100 km and carbon dioxide emissions of no more than 113 grams per km (because it has a direct correlation with the quantity of gasoline consumed).
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Nomura researchers mentioned that below India’s emissions calculation system, the CAFE framework offers heavier autos extra relaxed absolute CO₂ limits. A big SUV or premium automobile is allowed a a lot increased CO₂ goal whereas smaller vehicles get a way more stringent goal.

The graph above, ready by Nomura researchers, reveals that that one of many high-selling SUVs (represented with a inexperienced dot, Mannequin A), having CO₂ emissions of about 130g/km, is compliant, whereas a high-selling small automobile (represented with a pink dot, Mannequin B) having CO₂ emissions of about 100g/km is non-compliant.
“One of many frequent methods OEMs use to decrease CO₂ emissions is decreasing car weight whereas sustaining the security traits of the car. However below India’s CAFE mechanism, lighter vehicles are assigned stricter absolute CO₂ targets. Which means even when a automobile turns into extra environment friendly by way of lightweighting, it might nonetheless fall wanting its now-lower goal. Consequently, the present framework doesn’t adequately reward lightweighting, particularly for already mild, entry-level vehicles,” the examine mentioned.
How different markets mood norms for small vehicles
The researchers cited examples of the USA, China, Japan, South Korea and European Union to point out that in these markets, regulators have prescribed relaxed emissions norms for smaller vehicles.
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USA: Follows a piecewise linear method for vehicles under a sure footprint, which ensures that the goal doesn’t carry on growing indefinitely. This suggests that gasoline financial system goal under sure automobile footprint is mounted and doesn’t turn out to be progressively stricter with additional discount in measurement, making certain comparatively relaxed targets for smaller vehicles
China: Follows the same piecewise linear method, for vehicles under a sure curb weight threshold, the goal turns into fixed, which ensures that the gasoline consumption goal doesn’t carry on tightening indefinitely for smaller, lighter vehicles.
South Korea: For vehicles under a sure curb weight, the gasoline financial system goal stays fixed, making certain that smaller, lighter vehicles usually are not subjected to more and more stricter targets as weight reduces. Additional, producers additionally get an extra benefit of 5–7g/km of their CAFE efficiency, based mostly on the gross sales ratio of small vehicles of their portfolio.
Japan: Japan follows a non-linear method, making certain that small lightweight vehicles usually are not subjected to disproportionately increased targets.
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Europe: It has gone a step forward and made the slope damaging (-0.0144) which suggests greater vehicles have a decrease absolute CO₂ goal and smaller vehicles have relaxed targets.

