India is set to modernise its vehicle emission testing framework by adopting the Worldwide Harmonised Light-Vehicle Test Procedure (WLTP) from 1 April 2027. The government has notified amendments to the Central Motor Vehicles Rules, under which WLTP will replace the current Modified Indian Driving Cycle (MIDC) for BS6 emission testing.
The new WLTP-based testing will apply to M1 and M2 category vehicles, including passenger cars, SUVs, MPVs and light commercial vehicles with a gross weight of up to 5 tonnes. This move marks a significant step toward aligning India’s emission regulations with globally accepted standards.
WLTP is considered more accurate and representative of real-world driving conditions compared to MIDC. It uses higher speeds, sharper acceleration, longer test durations and multiple driving phases, resulting in emission figures that better reflect on-road performance. This is expected to provide a clearer picture of a vehicle’s carbon dioxide and pollutant output.
For manufacturers, the shift will require further optimisation of engines, exhaust after-treatment systems and powertrain technologies. While this may increase development costs, it will also encourage cleaner and more efficient vehicles.
The new WLTP norms will be mandatory for all new vehicle models manufactured from April 2027 onwards, with existing models expected to transition in phases. Overall, the move strengthens India’s commitment to reducing vehicular pollution and improving environmental sustainability.
