What are the consequences of using 92-octane gasoline in a car specified for 95-octane?

[Evan]

Using 92-octane gasoline in a car specified for 95-octane will cause engine knocking. Consequences of engine knocking: Engine knocking leads to abnormal pressure in the combustion chamber. Over time, this results in severe carbon buildup in the engine, poor heat dissipation, and in extreme cases, even the engine block can be damaged. 95-octane gasoline has better anti-knock properties: 95-octane gasoline has a higher octane rating. The higher the octane rating in gasoline, the better the anti-knock performance for the engine. Normally, the higher the engine's compression ratio, the higher the required gasoline octane rating. This is primarily because a higher compression ratio increases the pressure and temperature inside the cylinder, making the air-fuel mixture more prone to combustion and significantly increasing the likelihood of engine knocking. To prevent knocking, higher-octane gasoline is necessary.