The following is the methodology note for the calculations used in T&E's original video 'Stop the Oil Waste', which details the waste from inefficient cars in Europe because of weakenings in proposed legislation. This waste is worth 35 billion EUR a year! The more fuel-efficient a car is, the cheaper it is to run. The European Parliament is currently deciding how fuel-efficient future cars in Europe should be. Weakening of the proposed car fuel-efficiency law (95 grams of CO2/km) will cause huge levels of oil waste and money.