Petrol-Diesel Prices Today, December 19: The price of petrol and diesel remained steady on Monday, 19 December. Fuel prices have not changed in the last seven months. The oil marketing companies revise fuel prices every morning at 6:00 AM. The last major country-wide fluctuation in fuel prices was witnessed in May when the Centre cut the excise duty on petrol by Rs 8 per litre and Rs 6 per litre on diesel. In another related development, the rates of Compressed Natural Gas (CNG) were hiked in the country on Saturday morning. Get more India News and Business News on Zee Business.