The latest advisory fuel rates became effective on 1 March 2017. Fuel rates are reviewed four times a year with changes taking effect on 1 March, 1 June, 1 September and 1 December. You can use the previous rates for up to 1 month from the date the new rates apply.The rates are as follows:Engine size Petrol – amount per mile LPG – amount per mile1400cc or less   11p7p1401cc to 2000cc 14p9pOver 2000cc22p14pEngine sizeDiesel – amount per mile1600cc or smaller9p1601cc to 2000cc11pOver 2000cc13pHybrid cars are treated as either petrol or diesel cars for this purpose.