This may come as a surprise to many. Retail price inflation in petrol was the lowest at 10.21 per cent in March since November 2020. In diesel, it scraped the bottom of the barrel at 5.19 per cent in the last month of 2021-22 since February 2020. Even liquefied petroleum gas (LPG) was at a nine-month low of 9.97 per cent in the month.