Delhi’s transport department officials said in the first year of the purchase of the vehicle, the owner does not have to get a PUC certificate. However, after the first year, obtaining a PUC certificate every three months was mandatory in Delhi. The validity of the PUC certificate in other states was six months.
was is the buzz word
now if your car is Bharat Stage 4 (BS4) and registered on or after April 1, 2010 > puc is valid for 1 year. I recently got my Brio PUC done and its valid for 1 year.
for older cars its still 3 months