Auto Ahead of Union Budget, Maruti Suzuki pitches for 18% GST on CNG cars Updated : June 17, 2019 02:44 PM IST At present, all automobile categories except electric vehicles attract 28 percent GST. CNG cars reduce import of crude oil, and the gas is cheaper than crude oil, says Bhargava Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.