Drive smoothly and efficiently - harsh acceleration and heavy braking have a very significant effect on fuel consumption, driving more smoothly saves fuel. Slow down - driving at high speeds significantly increases fuel consumption. Use higher gears, as soon as traffic conditions allow. Switch off - sitting stationary is zero miles per gallon, switch off the engine whenever it is safe to do so. Lose weight - don't carry unnecessary weight, remove roof racks when not in use.
Regular servicing helps keep the engine at best efficiency.
Keep the pressure up - make sure the tyres are inflated to the correct pressure for the vehicle. Do not compromise safety but be aware that the use of onboard electrical devices increases fuel consumption. Check your fuel consumption - it will help you get the most from the car, changes in overall fuel consumption may indicate a fault.