The fuel economy of a vehicle is the relationship between the distance travelled and the amount of fuel used by the vehicle. Consumption can be expressed in terms of volume of fuel to travel a distance, or the distance travelled per unit volume of fuel consumed. Since fuel consumption of vehicles is a significant factor in air pollution, and since importation of motor fuel can be a large part of a nation's foreign trade, many countries impose requirements for fuel economy. Different methods are used to approximate the actual performance of the vehicle. The energy in fuel is required to overcome various losses (wind resistance, tire drag, and others) encountered while propelling the vehicle, and in providing power to vehicle systems such as ignition or air conditioning. Various strategies can be employed to reduce losses at each of the conversions between the chemical energy in the fuel and the kinetic energy of the vehicle. Driver behavior can affect fuel economy; manoeuvres such as sudden acceleration and heavy braking waste energy.
You can improve the fuel efficiency of your vehicle by:-
As you descend, take your foot off the accelerator pedal. Do not try to accelerate uphill whilst you are in gear.
Acceleration and Speed control
Accelerate freely at low speeds and remain within the speed limit to aid fuel economy.
Opt for a smooth ride
Try to anticipate traffic conditions in advance to avoid sudden braking or fast acceleration.
Optimise your vehicle
Regular maintenance of your vehicle and monitoring of your tyre pressures are the key to optimal fuel consumption.
Adapt your gear changes
To consume less fuel you must be in the highest gear as soon as possible.
Vehicle Thermal Management
Start your journey without "warming up" the engine unnecessarily and switch off the ignition when you stop for more than a few seconds.