Wedding ringing charges Picking up Alison's comment about mileage, the paltry 45p/mile allowed by HMRC is little more than half the actual cost of running a car. Take depreciation, insurance, a regular service, fuel, cost of one tyre per year and perhaps toss in an MOT test and divide the total by your annual mileage. In my case the answer is 84p/mile. One solution might be to double my mileage in order to reduce the pence-per-mile but since retirement and the recent Covid lockdowns, my annual mileage continues to reduce.