We all know that if you drive with your windows up and no Air Conditioning you get considerably better fuel mileage than if you drive with the windows down or air conditioning on, but what about the technicalities. I have a few questions myself that are quite puzzling.
For example, if you drive with the air on but no conditioning (just taking the air from the outside and bringing it in) do you hurt the economy and if so, how badly?
How about suspension? Does it lower the economy when its old and needs replacing? What about tires? What about anything else any of you can think of?
If anyone has any questions or answers please post them!