Zero percent loans are offered by the finance and the credit card companies to acquire EMI paying customers. These loan schemes do not follow the RBI guidelines, hence most of the genuine finance schemes are transparent about their 0% interest structure to comply with RBI guidelines.
Here are some of the companies that offer 0% interest EMI scheme. Do note that you need to read documentation in order to understand how the scheme works.
1. Bajaj Allianz.
4. HDFC Finance
5. Royal Sundaram Finance
Apart from these financial institutions, you may find that credit card companies in alliance with the known banks run 0% interest EMI schemes. So you'd need to check out such offers at showroom where you're purchasing the bike or car.
Is it worth to buy from 0 percent interest loan or they still charge interest as hidden? :
Not at all worth buying from such schemes. The reason being you end up paying more money than the actual cost of the product. Take example where your bike's price is 1 Lakh and after applying for 0% interest loan, you'd be paying EMI to payback the cost. The processing fee and the EMI prices calculation will increase the cost of acquisition. So the price of the bike will be 1,20,000 Rs or more. This way you paid more money to purchase the bike. Your only trade here is to buy more time to pay off this loan and also you end up paying more.