How are the three factors (mileage, Safety Score and loss ratio) weighted? How much does each individually impact the rebate amount?

The loss ratio determines your fleet's eligibility for a rebate. If this is less than 55% then you will qualify for a rebate of up to 10% based on your mileage and Safety Score. 

Of the maximum 10%, 6% of this is weighted towards mileage and 4% weighted towards Safety Score. For more information on how the Safety Score is calculated, see How is the Safety Score calculated?