The latest advisory fuel rates became effective on 1 June 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 2000cc 21p14p Engine size Diesel – amount per mile1600cc or smaller 9p1601cc to 2000cc 11pOver 2000cc 13pHybrid cars are treated as either petrol or diesel cars for this purpose.