Turn off AC when not in use

Constant use of air conditioner does consume a lot of fuel therefore decreasing your mileage up to 30%. It is therefore advisable to always turn off aircon whenever necessary.
Wheel alignment

A misaligned vehicle reduces mileage causes premature tyre wear and forces the
engine to work harder.
Tyre pressure checking
Improperly inflated tyres can increase fuel consumption and cause premature trye wear so make sure to maintain the recommended amount of pressure.
Get rid of unnecessary weight
The heavier the car, the more fuel it uses so get rid of unnecessary baggage from your car.
Recommended lubricants
Use only manufacturer recommended engine oil for your car so that it will perform efficiently hence reducing the amount of fuel consumed.
 Regular service

A car that is not well serviced will have a bad fuel economy. Make sure that your vehicle’s filter and spark plugs are regularly checked, and oxygen sensor is checked at every 60 000 km as this would assist the engine to run efficiently hence adjusting the amount of fuel entering the engine.
 Go easy on the pedal

Speeding, braking, and rapid acceleration consume more fuel. Try to maintain a constant speed as much as you can especially when driving in the highway. Also anticipate early to slow down in advance to avoid braking hard when approaching red traffic lights or stop signs.
Fuel up in cool temperatures and ensure closed caps

Fuel up the tank when it is cool outside either early in the morning or evening. The fuel will be denser when cold hence will receive more fuel at the same amount of money. Always remember to close the fuel cap after fueling up because evaporating fuel will reduce your cars mileage.
Plan your route and trips

Plan your trips in advance, minimize stops and if possible, combine them especially those errands that can be run at the same place. GPS can be used to map out routes, so that time won’t be spent driving in circles and in traffic jams. This would save the amount of fuel one uses for the trips.