The drag coefficient of a vehicle is a measure of how much air resistance it encounters as it moves through the air. It is a dimensionless number that ranges from 0 to 1, with a lower number indicating less air resistance.
The drag coefficient of a vehicle is affected by a number of factors, including its shape, size, and surface texture. Vehicles with a sleek, streamlined shape have lower drag coefficients than vehicles with a more boxy shape. Smaller vehicles also have lower drag coefficients than larger vehicles. And vehicles with a smooth surface have lower drag coefficients than vehicles with a rough surface.
The drag coefficient of a vehicle can have a significant impact on its fuel efficiency. A vehicle with a low drag coefficient will use less fuel than a vehicle with a high drag coefficient. This is because a vehicle with a low drag coefficient experiences less air resistance, which means that it requires less energy to move through the air.
The drag coefficient of a 2004 Nissan Maxima is 0.31, which is a relatively low number. This means that the Maxima experiences less air resistance than many other vehicles, which contributes to its fuel efficiency.