There can be multiple factors affecting fuel consumption. Knowing about these will help you control them and reduce your consumption in future. The following list will be helpful in this regard.
1. Vehicle Size and Weight
Your car's weight is a major factor influencing its fuel consumption. The weight indicates the energy your car needs for moving, which, in turn, indicates the amount of fuel required. The size of the vehicle also has a part to play in this regard.
For instance, a compact vehicle weighs less than a truck or SUV. Moreover, it can have a smaller engine and work with less fuel and energy. If two vehicles are of the same size, the components and materials will determine the fuel consumption.
2. Vehicle Displacement
Displacement refers to the volume of air a car’s engine consumes in a single revolution. The more air it needs in this process, the higher will be the requirement for energy. The measurement of displacement is expressed in litres. Naturally, higher displacement will consume higher fuel.
3. Mechanical Resistance
Every vehicle has its own set of mechanical resistance. It determines the amount of energy a vehicle requires o move all the parts of its drivetrain. Components like the transmission, wheel bearings, axels and others contribute to the motion of a car.
While putting these together, engineers can refine the system to minimise the power required for the parts to come in motion. For instance, manual transmission requires less energy than automatic. This can influence fuel consumption.
4. Aerodynamic Efficiency
Air poses resistance when a car is trying to move. Having curves and well-designed shapes can help cars avoid this resistance. For instance, trucks have few curves. Naturally, they require more fuel to move. Thus, car exteriors with more curves and unique designs can help reduce fuel consumption.