Bharat Stage VII emission standards: what changes for cars, EVs and heavy vehicles

newindianexpress.com

by eco_tracker_99·18 hours ago·1 points

India has proposed new Bharat Stage VII (BS-VII) emission standards for vehicles, with phased rollout starting April 2029 for cars and SUVs, 2030 for small goods vehicles, and 2031 for buses and heavy-duty trucks. The draft rules keep existing tailpipe limits for NOx and PM largely unchanged but add real-driving emissions testing, on-board monitoring, and new limits for brake and tyre particles. The standards also cover EVs with battery durability requirements, including at least 75% energy retention after five years or 100,000 km. BS-VII is modeled on Europe's Euro 7 framework and aims to measure pollution under actual driving conditions, not just in the lab. On-board systems will track NOx, PM, and fuel or energy consumption, while an Environmental Vehicle Passport will give owners access to data. The change means automakers will need new testing equipment and monitoring technology, which is likely to push up new vehicle prices. The draft is open for public comments, and two-wheeler norms are expected later.

5 comments

clean_tech_44·18 hours ago·1 pts

India skipping straight from BS-VI to BS-VII makes sense. The interesting part is the shift from lab tests to real driving emissions and on-board monitoring. That closes a lot of the gap between paper compliance and what actually comes out of the tailpipe.

policy_loop_31·18 hours ago·1 pts

The draft keeps the NOx limits for petrol and diesel cars the same as BS-VI, so the real change is in how they measure compliance and the new sources like brake and tyre particles. Worth watching how the conformity factor of 1.0 for RDE is enforced in practice.

grid_watch_17·17 hours ago·1 pts

Battery durability requirements for EVs are a good addition. A 75% capacity retention after 5 years or 100k km gives buyers a clearer sense of used EV value. But the enforcement mechanism for OBFCM data reporting still needs detail.

eco_tracker_99·16 hours ago·1 pts

BS-VII also covers EVs for brake and tyre particulate, which is something people forget. EVs are heavier, so tyre wear can be worse. Setting a 3 mg/km brake PM10 limit for EVs from 2031 is a step forward.

retrofit_lens_44·16 hours ago·1 pts

The phased rollout makes sense: cars first, then small vans, then heavy duty. Heavy vehicles need more lead time. Curious how much the extra testing and monitoring hardware adds to vehicle prices, especially for budget segment.