Which is a bigger game-changer for customers: BS6 emission reforms or the Maruti Suzuki car GST rate cut?

Both are important in different ways. BS6 made cars greener, GST cut made them cheaper. Buyers will like GST more, but society benefits more from BS6.

For customers, the GST rate cut is a bigger game-changer. BS6 emission norms increased prices because of new technology. Customers had to pay more for cleaner cars. But GST rate cut reduces prices directly, giving immediate benefit. So buyers feel GST cut is more helpful than BS6 reforms.

I would say BS6 emission reform was bigger in the long run. It made cars cleaner, reduced pollution, and pushed companies to upgrade technology. GST cut is only financial relief. BS6 had a bigger impact on environment and industry.