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Nitin Gadkari Unveils Affordable IIT-Delhi Retrofit Kit to Bring Old Diesel Vehicles to BS-VI Emission Standards
TOI Business•Published: Sep 4, 2026 03:11 PM IST
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India’s Road Transport Minister Nitin Gadkari announced a breakthrough retrofit device that upgrades older diesel engines to meet modern emission standards. Developed by IIT-Delhi, the technology costs just Rs 5,000 and promises to cut harmful tailpipe pollutants by up to 90%.
- The Innovation: The device acts as an advanced exhaust treatment system that can be installed on existing BS-III and BS-IV diesel vehicles.
- Proven Results: The technology has successfully cleared rigorous testing phases and is now ready for wider implementation across the country.
- Cost-Effective: At a price point of Rs 5,000, it offers a budget-friendly alternative to replacing older vehicles entirely.
- Broad Compatibility: The kit is designed to work seamlessly with a variety of older diesel models currently on Indian roads.
The Context & Background
India has been struggling to balance its massive fleet of older diesel vehicles with strict air quality mandates. This innovation addresses the environmental impact of legacy transport without forcing owners to scrap their functional vehicles.
Why it matters:This technology could save millions of vehicle owners from the financial burden of scrapping their cars while significantly improving urban air quality. It provides a scalable, low-cost solution for India to meet its climate goals without disrupting the logistics and transport sectors.
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