The government had cut excise duty on cars, SUVs and two-wheelers in the Interim Budget in February to help the industry tide over a demand slump.
In June, the new government extended the excise duty concession for automobiles by six months to December 31.
"I had welcomed the government's move when they had announced to maintain the reduction in excise duty six month's back and I think the government should continue to do so going forward as well," Renault India Country CEO and Managing Director Sumit Sawhney said.
Maruti Suzuki Chairman R C Bhargava said: "At this point, if the excise duty goes up, it could easily push the car industry into the negative territory."
He expressed the hope that government will continue excise relief and said it is very conscious of the need to expand manufacturing and that the car industry has not been performing as good as it was hoped for.
Industry body Society of Indian Automobile Manufacturers (SIAM) Director General Vishnu Mathur said the continuation of the excise duty relief would help the industry recover fully.
"We are requesting the government to continue the excise duty reduction as the industry has not fully recovered. Continuation of excise duty relief will help the recovery of the industry," he said.
Car sales in India fell 2.55 percent in October as purchases remained subdued during the festival season, marking the second consecutive month of decline. In September car sales had declined 1.03 percent, after posting four months of consecutive growth.
Excise duty on small cars, scooters, motorcycles and commercial vehicles currently stands at 8 percent from 12 percent previously. The factory gate duty on SUVs stands at the reduced rate of 24 percent as against 30 percent.
The duty on large cars stands at 24 percent compared with 27 percent earlier, while the duty on mid-sized cars stands at 20 percent from 24 percent.
Sawhney said that the government should take a long term view and look at further reducing the excise duty.
"Taking a long term view the government has to have a unified excise duty structure and look forward to a further reduction in the excise duty, which is a long pending demand from all the manufacturers," he said.