What are the effects of accidentally filling a car with 92 octane gasoline when it requires 95?

[Myra]

If a car is recommended to use 95 octane gasoline but is accidentally filled with 92 octane, generally there won't be any significant impact if it happens once or twice. However, if lower-octane gasoline is used consistently or if the two types are mixed, it can severely affect the engine's normal operation, leading to knocking. In serious cases, this can reduce the engine's lifespan and increase maintenance costs. When selecting gasoline, the general rule is: for compression ratios above 8.0, use 92 octane; for compression ratios above 9.0, use 95 octane; and for compression ratios above 10.0, use 98 octane. The difference between 95 octane and 92 octane gasoline: The octane rating primarily indicates the ratio of the gasoline's anti-knock properties to those of standard gasoline (which is composed of isooctane and n-heptane). A higher octane number means better anti-knock performance. Simply put, 95 octane gasoline contains 95% isooctane and 5% n-heptane. The higher the proportion of isooctane, the better the gasoline's anti-knock capability. In other words, 92 octane gasoline is more prone to knocking but has less explosive force, while 95 octane gasoline is less prone to knocking but has greater explosive force.