What Stage is a Vehicle Engine at 150,000 Kilometers Mileage?
3 Answers
A vehicle engine with 150,000 kilometers mileage is in the natural wear stage. The stages of an engine can be divided into the following three conditions: 1. Running-in wear stage of a new engine (or overhauled engine): During this period, due to the initial flatness of newly matched mechanical surfaces, the wear on the mating surfaces is relatively rapid, commonly referred to as running-in wear. 2. Natural wear stage: After the running-in period, the wear rate of components slows down, the wear amount becomes more stable, and it maintains a uniform increase over a long period. This phase is known as the normal working period, and the wear during this time is termed natural wear. 3. Catastrophic wear stage: Once the natural wear of components reaches the wear limit point, due to increased clearances, the oil film can no longer be maintained, lubrication conditions deteriorate, impacts begin to occur, and wear accelerates sharply. The components quickly lose their working capability until failure. This period is referred to as the repair interval or repair period of the mating parts, also known as the catastrophic wear stage.
A vehicle with 150,000 kilometers on its engine is in its late middle-age stage. I feel that the engine might start showing slight signs of fatigue at this point, such as a slight increase in fuel consumption or less smooth acceleration. After all, internal components like piston rings or valve gaskets have experienced some wear. However, if you've consistently changed the oil every 5,000 kilometers and regularly cleaned the air filter, its vitality can still last quite a while. From my experience, I've driven several cars to this mileage, and most of them remained stable. I recommend frequently checking the belts and cooling system to avoid overheating, which can lead to bigger issues. Also, keep an eye out for oil leaks—timely repairs can save a lot on future repair costs.
My observation is that an engine with over 150,000 kilometers is entering its early old age, but it doesn't necessarily mean it will have many issues—it largely depends on maintenance history. I often drive vehicles with this mileage and notice they might vibrate more and be slightly noisier, but they're still adequate for daily driving. Regular maintenance like replacing spark plugs and checking the fuel system is crucial; otherwise, minor issues can escalate. For instance, carbon buildup can lead to power loss, which can often be alleviated by cleaning the throttle body. In short, don't panic—many cars can exceed 200,000 kilometers. The key is to be more attentive from now on, saving money and ensuring peace of mind.
