For buying a car, I believe that most people will base their choices on reason and their specific needs. For example, some people value performance more and will naturally choose models with stronger power, such as 2.0T turbo cars or 2.5L naturally aspirated cars. While others value fuel economy more and will prioritize smaller engine models when buying a car, such as 1.5L naturally aspirated cars or 1.5T small displacement turbocharged cars. Of course, if it's just for household use, it's necessary to achieve a balance between power and fuel consumption, and hybrid vehicles are the best choice.
In particular, hybrid SUVs, with their spacious interiors, excellent fuel economy, outstanding performance, and abundant configurations, basically meet the needs of household use. In terms of configuration, one principle that car owners should follow is to have enough and not blindly pursue excessively high configurations. After all, many configurations are rarely used in daily life. In addition, car owners should also be well-versed in related knowledge of cars, such as what engine "RPM" is reasonable when the car is idling? For idling, it refers to the state of the engine when it is idle, and the engine's RPM at this time is called "idling RPM".
The idle speed of a car varies depending on the engine model, and even the same car may have a different idle speed in different conditions. When the ambient temperature is low and the car is started, the idle speed is usually higher. After all, the engine must work as hard as possible to raise the temperatures of the oil and other fluids quickly, thereby reducing engine wear. Generally speaking, for a family car, the idle speed when the car is cold-started is between 1300 and 1500 revolutions per minute (rpm), which is a higher state, which is also the car's self-protection mechanism. However, after starting for one or two minutes, the engine speed will drop down to below 1000 rpm.
The "idle speed" has two very important functions. One is to measure the performance of the engine, and the other is related to fuel consumption. The lower the idle speed, the lower the fuel consumption will be. If we ignore other interference factors, that is, in the ideal state, the idle speed of the engine can be as low as 600 rpm, but it is difficult to achieve such a low level in reality. Generally speaking, the normal idle speed of most family cars is between 700 and 800 rpm, and some may be higher, such as nearly 1000 rpm. So it should be noted that if you find that your car's idle speed suddenly rises to more than 1200 rpm and stays there, or even has an upward trend.
It's likely that there's a problem with the engine, such as a leak in the intake manifold or a loose connection. You should have it checked at an authorized service center as soon as possible. In fact, the idle speed of older cars could be adjusted to suit the driver's needs. For example, if someone wanted to save fuel, they would lower the idle speed, while if they wanted to accelerate faster and have a more responsive engine, they would increase it slightly. However, the idle speed of modern cars is fixed at the factory and cannot be changed. This is mainly because manufacturers want to reduce the number of engine failures and ensure the stability of vehicle quality. It's understandable. What do you think of this?