Because of the "drag" caused with windows down, it is usually more beneficial to drive with the windows up and the air on. For more information, check out HowSTuffWorks.com.
Sorry but this has way too many unknowns to answer properly. (Engine size, engine temperature, idle or throttled, air conditioning, charged battery, headlights) A few minor trends though can be specified. While an engine is cold, more fuel will be consumed to bring the engine up to temperature. Most modern automobile engines have been designed so lean that when added mechanical loads are engaged like air conditioning, and battery charging; more fuel is consumed to compensate. Older, typically carbuerated engines were set to consume enough fuel at idle to not stall the engine with all mechanical loads engaged.
Yes, it causes the engine and the charging system to work much harder. I would say it will cost you at least 10% in fuel efficiency. On cooler days it would be much more economical to drive with the windows down or with the fan on without using the a/c compressor
The fuel consumption of a van idling for one hour typically ranges from 0.5 to 1 gallon, depending on the engine size, type, and efficiency. Smaller, more fuel-efficient vans may burn closer to 0.5 gallons, while larger or older models may consume up to 1 gallon or more. Factors like air conditioning use and engine condition can also affect idle fuel consumption.
A four-cylinder engine does not require as much fuel as a six-cylinder, which requires half again as much fuel every time the pistons fire. A six-cylinder is more powerful, too, and accordingly uses more fuel. Four-cylinders are more economical, and if they are properly maintained, are more efficient.
The diesel engine has more toque, gets better fuel mileage (30%) better, and will last longer with less maintenance. It does cost more initially and diesel fuel is more costly but for some applications is a wise choice.
be more specific, make,model,engine size, fuel type,
it has more horsepower and does not waste as much fuel.
Accelerating quickly can actually reduce fuel efficiency by causing the engine to work harder and consume more fuel. Gradual acceleration is typically more fuel-efficient as it allows the engine to operate more efficiently. Driving at a steady speed and avoiding rapid acceleration and deceleration can help improve fuel economy.
It's just the complement to fuel displacement. How much air the engine takes in affects how much fuel it can burn.
A little more information please ( size of engine , with or without air conditioning ) on your 1997 Ford Ranger
Depends on engine size, how many cylinders, turbocharged or not, supercharged or not, fuel type used, etc. Please be more specific with the question.
depends on cubic displacement and type of fuel being used some fuels have more stored energy. The larger the engine usually the more fuel consumed