1. Automobile Efficiency Chelsea Meigs Current Science-period 4

2. What factors affect automobile gas mileage and emissions? Rolling resistance Tire pressure Air resistance Cooling system Weight of car and cargo Engine idling Driving habits

3. How efficient is an automobile? 12% of the energy in gasoline results in kinetic energy if the vehicle is well-maintained. 8-10% if the vehicle is not well-maintained

4. How much of the energy in the gasoline is actually used to move the automobile? Only about 15% of the energy from the fuel you put in your tank gets used to move your car down the road or run useful accessories, such as air conditioning. The rest of the energy is lost to engine and driveline inefficiencies and idling.