Fuel efficiency doesn’t only depend on the car
How fuel-efficient your car will be, can be found in the specs of the car. The fuel consumption will depend on your driving style, the type of driving you do and what tyres you have on your car. Smooth driving style always consumes less fuel than a very aggressive driving style. So if you want to drive with low fuel consumption, then drive smoothly and keep the speed as constant as possible and keep the speed limits. You also have the difference in fuel consumption between city traffic and highway driving. Highway driving is more economical because you can maintain the same speed and run the engine efficiently. The stop and start, which you experience in city driving, is not very economical and your fuel consumption will increase. If you are mainly driving in the city, you will have to live with higher fuel consumption than indicated. You can still drive as smoothly as possible within the city, but fuel consumption will always be higher than in highway driving.