It doesn't reduce the consumption of your car in the amount necessary to save money. After all, this is a very common misconception. The actual reduction of consumption is indeed possible, but it is not enough to cover the difference in fuel prices. And, in the end, the consumption falls a little, but you have to spend money even more.
Tire pressure control is an extremely important factor. A flat tire leads to a significant increase in fuel consumption and accelerated wear of the tires. At the same time, too high pressure significantly worsens the road grip. That is why it is so important to adhere the pressure values set by the manufacturer.
It's so nice to drive in a car with open windows, is not it? However, this has a profound effect on your wallet. And if, while driving in traffic jams, the open window does not affect the consumption at all, then as the speed increases, the consumption becomes higher and higher. This works in this way: air flows, getting into the passenger compartment, slow down the car, and to keep the speed, you have to press harder on the gas — hence, the increase in consumption.
To understand how the air conditioning system affects the consumption, let's briefly recall its device. The air conditioning compressor is driven by a belt drive directly from the crankshaft pulley. When the compressor is turned on, the clutch is locked in it and freon starts circulating through the system, cooling the air entering the cabin. However, this process is extremely energy-consuming. And if шт the cars with large and powerful engines, the activating of an air conditioning has practically no effect on the economy, then in cars with small engines the consumption can increase by 10 percent.
In the summer, try to leave your car in the shade only. And having parked the car under the baking sun, be prepared for the fact that the petrol, when heated, will evaporate at an accelerated rate. In addition, the overheated passenger compartment will require the intensive operation of the air conditioning, and this, as we found out a little earlier, leads to an additional load to the power grid, the generator and - hence - the engine, which also causes an increase in fuel consumption.
It is logical to assume that a malfunctioning car will consume more fuel, but not all people think about it. Incomplete burning due to old plugs or "broken" spark plug wiring, clogged catalyst, heavy wear of the engine's piston group, low oil level in the transmission and much more. In general, it is much more beneficial to keep the car in good order than to overpay for fuel. And indeed it's a lot nicer.