• Check your tyre pressure every month - under inflated tyres can increase fuel consumption by up to 4%.
• Service your vehicle and check the oil level regularly - correctly maintained cars can operate more efficiently and help reduce fuel consumption and CO2 emissions.
• Remove unnecessary weight from your vehicle - the heavier the vehicle, the harder the engine has to work and the more fuel it will consume.
• Close windows especially at high speeds and remove roof boxes, racks or bike carriers when not in use - reducing wind resistance will reduce your fuel consumption and can cut emissions by up to 10%.
• Use air conditioning only when necessary - this can reduce fuel consumption and emissions by up to 5%.
• Start driving as soon as possible after starting the engine and turn off the engine when stationary for more than one minute - modern engines are designed to enable you to just get in and go, thus reducing fuel consumption.
• Drive at a reasonable and consistant speed  - driving at high speeds significantly increases fuel consumption and everytime you accelerate or brake hard your engine uses more fuel and produces more CO2.
• When accelerating change up gears as early as possible - higher gears are more economical for fuel consumption.
• Try to anticipate traffic flow - look ahead as far as possible to help avoid unnecessary braking.
• Consider car sharing for work or leisure. 

Source: The European Petroleum Industry and the European Commission.