Avoid unnecessary idling.Turn off your engine when you are stopped for more than 60 seconds, except when in traffic. The average vehicle with a three-litre engine wastes 300 millilitres—more than one cup—of fuel for every 10 minutes it idles. For more information on idling and how to avoid this wasteful habit, visit Natural Resources Canada’s Idle-Free Zone.Measure tire pressure monthly.Operating a vehicle with its tires underinflated by 8 psi (56 kPa) can reduce the life of the tires by 10,000 kilometres and increase the vehicle’s fuel consumption by four percent. You can find the recommended tire pressure for your vehicle on the tire-information placard—located on the edge of the driver’s door or doorpost—or in your owner’s manual. Learn more about tire maintenance at www.betiresmart.ca.Avoid carrying unnecessary weight.Remove items such as salt, sand and sports equipment from your vehicle before setting out. The less weight in your vehicle, the less fuel your engine will need—and the fewer carbon dioxide emissions your vehicle will produce. Consider that the fuel consumption of a mid-size car increases by about one percent for every 25 kilograms of weight in the vehicle.