The current interim ban in the national capital region will continue till March 31, while the Supreme Court will soon decide on whether to extend it or not.
"Even if the diesel (cars) ban is continued at least we should find some consistency in what we do in terms of taxation and policy," Mercedes-Benz Managing Director & CEO Roland Folger told PTI.
Folger said ban on diesel cars above 2,000 cc does not serve the purpose of containing emissions as the number of such vehicles is very low in comparison with models with smaller diesel engines including the ones with 1,500 cc capacity.
"From our perspective, if diesel ban should continue, than it may make better sense to bring it to the same level (include 1,500 diesel vehicles as well). It will make a whole lot of difference. It will than provoke everybody to go to petrol models," Folger said.
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He added that the company could bring in more petrol vehicles if needed but it should not be encouraged as petrol cars emit more carbon dioxide.
"We are ready to bring in more models but it is not preferred choice as the petrol engines emit more carbon dioxide, that won't help in improving the emission scenario," Folger said.
Folger said a lack of consistent policy in India makes it difficult for the management to convince global headquarters to put in more investments in the country.
"When we go back to Germany and we want to convince them (management) for further investments in India they are looking at these statements, court directives. It is hard to explain all these to them. It becomes more difficult (to get new investments) than it used to be," he added.
The government has decided to impose 2.5 per cent cess on diesel vehicles of length not exceeding 4 meter and engine capacity not exceeding 1500cc, while higher engine capacity and SUVs as well as bigger sedans were slapped with a cess of 4 per cent on the value of the car.
These are over and above a cess of 1 per cent on petrol/ LPG/CNG driven vehicles of length not exceeding 4 meter and engine capacity not exceeding 1,200cc.
Despite challenges, Folger exuded confidence to achieve double digit growth in the country in the current year.