Traditional Rent a Car has a fuel policy which is straightforward, and works in the fairest way possible for both parties. Some companies ask you to bring back the rent a car with an empty tank, but this is virtually impossible, which means you end up spending more than you need to.
Traditional rent a car provides the car with a full tank of fuel, and you are required to return it in the same condition. This way, you only pay for what you use. Charges will apply if you return the car with less petrol than full on the fuel gauge, and this charge will be considerably higher than the market rate. More information is contained on the rear of the rental contract.