The rates apply from 1 March 2017 but a business can use the previous rates for up to one month. All other rates have not changed.
The latest rates can be found here.
What is an AFR?
AFRs are for employees who are reimbursed for business travel in their company cars or employees who require to repay the cost of fuel used for private travel. The AFR varies depending on fuel type and the size of the engine of the vehicle.