Running an older vehicle of pre-2000 make, particularly commercial ones, will soon become more taxing. Such vehicles will have to undergo frequent fitness tests and there will also be about 15-20 fold increase in the fees for both first time registration of diesel/ petrol vehicles and for renewal of their registration. These are some of the disincentives that the government has finalised in its blueprint to push the phasing out of older polluting vehicles. According to different studies, older vehicles are 25 times more polluting as compared to new ones. Sources said old commercial vehicles will be the main focus of voluntary scrapping scheme, which the government is likely to launch in the next three to four months.