The Ministry of Road Transport and Highways (MoRTH) has approved a proposed timeline for Bharat Stage 7 (BS7) emission norms, with implementation set to begin in April 2029, according to The Economic Times. The proposed rules will be introduced in phases over six years, ending in April 2035, and are aligned with Europe’s Euro 7 standards.
BS7 emission norms: Proposed rollout timeline
The first phase will cover new passenger vehicles manufactured from April 2029. Light commercial vehicles and pick-up vans will follow in 2030, while heavy-duty trucks and buses are scheduled to come under the norms from April 2031. A separate timeline for two-wheelers is yet to be announced.
The proposed standards will apply to vehicles covered by the new manufacturing deadlines. Existing vehicles, including those compliant with BS6, will not be affected by the transition, according to the report.
BS7 norms: Smaller particles and brake, tyre emissions
The proposed norms retain existing BS6 limits for most gaseous pollutants in passenger vehicles. However, the minimum particle size counted under particulate-number testing will be reduced from 23 nanometres to 10 nanometres, allowing smaller particles to be included in emissions measurements.
The framework will also cover non-exhaust emissions caused by brake wear and tyre abrasion. It will require checks under real-world driving conditions and allow independent testing agencies to assess whether vehicles continue to comply after they are sold.
For heavy-duty vehicles, the proposed standards target emission reductions of 20 to 50 percent across major pollutants.
The rules are still at the draft stage, and the proposed requirements and implementation dates may change before they are finalised.