Get Engine Tuned
Your engine should be well tuned at all times. If the tuning is out, it will certainly consume more fuel than it ideally should. Also ensure that all crucial fluids are replaced in the car in a timely manner so that the engine’s performance is not halted by bad performance of other parts of the car.
Maintaining an Optimum Speed
Try to maintain a single speed where the car consumes the least amount of fuel. In most cars, it is around 50 miles per hour but will vary a bit here and there in general.
Too much breaking causes greater consumption of fuel. Try not to break the engine too often and if it is necessary, slow the car down by shifting gears. Also maintain a decent distance between yourself and the car in front of you so that the need of a sudden break is minimum.
Avoid air conditioning when possible, especially in the city. If you can manage with windows rolled down, that is better. In case you are traveling at a high speed, it is better to use air conditioning though as the drag caused by the air while traveling may have a greater negative effect on fuel consumption.
Avoid idling and drive your car slowly to ensure that it gets warmed up. Idling can eat up a lot of fuel.
Try to keep unnecessary objects out of the car to reduce the weight it has to carry. The greater the weight, the more fuel the car will consume and vice versa.
Avoid Sudden Acceleration
Accelerate in a steady manner. If you floor it suddenly, the car will need greater amount of fuel and the consumption will increase greatly. Even if you intend to drive your vehicle at higher speeds, achieve the speed slowly and try not to test your car’s 0-60 miles time.