Fuel costs are drastically reduced when driving the car in accordance with the traffic rules. For example, according to the calculation of fuel company Shell Turkey, driving cars fast increases fuel consumption by 23 percent. Shell makes an important reminder for drivers: Avoid high speeds. The faster you go, the more wind resistance you encounter. For this reason, your car is forced to spend more fuel to maintain its speed. A difference of 12 km per hour can increase your fuel consumption by 23 per cent. Use the trip computer. Using the road computer on main roads will give you every drop by providing you to stay at constant speed.