Here is an introduction to the causes of changes in automotive technical conditions: Decline in power performance: The maximum driving speed of the vehicle decreases, acceleration time and distance increase, and the vehicle's maximum climbing ability declines. Tests show that when a car approaches its major repair mileage, its maximum driving speed decreases by 10%-15% compared to a new car, while acceleration time increases by 25%~35%. The above situations indicate a significant decline in the vehicle's operational capability or power performance. Deterioration in fuel economy: Fuel economy generally refers to the increased consumption of fuel and lubricating oil by the engine compared to normal usage. The more the consumption increases, the lower the engine's fuel economy. From the perspective of the entire vehicle, if tire wear accelerates, minor repair costs rise, and operating costs increase, it indicates a decline in the vehicle's fuel economy. Decline in operational reliability: The frequency of faults during operation (such as oil leaks, water leaks, electrical leaks, overheating, abnormal noises, etc.) increases. The number of stops for repairs rises, and even severe component damage can lead to driving accidents, compromising driving safety, reducing automotive transportation productivity, and increasing transportation costs. All these indicate a decline in the vehicle's operational reliability.
