No. PUC certificate is not required by CNG operated vehicles
Yes
CNG vehicles does not require much work because it was built to be a strong vehicle. This vehicle went through a lot of study.
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A PUC test for vehicle is otherwise known as a pollution under control test. This is the test given to vehicles in India.
Compressed Natural Gas It is fossiel fuel used to driving a vehicle.
If your vendor is nearby you can take your vehicle there, if not, there is a small nob in the cng (you should see when your mechanic adjusts it) which you can adjust yourself in emergency
The prices for a CNG conversion kit vary greatly from vehicle to vehicle. For a quality conversion kit, on average, one can expect to pay somewhere around $5000.
Upto 1 year from date of registration. After that you need to carry PUC certi.
It burns cleaner, is readily available, and produces less pollution. The problem with CNG's is storage. It takes a large tank to store the fuel. This takes up precious room in the trunk of any vehicle. There is also at this time no infrastructure for dispensing CNG.
CNG by itself is odorless. What gives CNG its smell is actually an additive.
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CNG is cheaper. CNG gives more mileage. CNG is the best as it is eco frendily.