Is there any impact if a car designed for 92 gasoline is filled with 95 gasoline?

[Torres]

92 and 95 gasoline cannot be mixed. If you accidentally fill up with the wrong gasoline grade, simply switch back to the correct grade after using it up. However, long-term use of the wrong gasoline grade can have the following effects: For vehicles designed for lower-grade gasoline, using higher-grade gasoline will not cause damage, but the increase in octane rating will alter the fuel's ignition point, leading to delayed combustion in the engine. This means both the engine's power output and thermal efficiency will decrease, resulting in poorer performance. For vehicles designed for higher-grade gasoline, using lower-grade gasoline can cause engine knocking. Because the octane rating is too low, the gasoline will ignite prematurely during the compression stroke. If combustion occurs before the spark plug fires, resistance will arise during the upward stroke. This resistance makes the engine run very unstably. If the knocking is mild, it may only increase noise without significant damage to the engine. However, noticeable knocking indicates severe engine conditions, affecting not only driving stability but also causing abnormal wear on pistons and cylinders. In severe cases, it can lead to cylinder scoring. In addition to checking the recommended gasoline grade in the car's manual, you can also find it on the fuel tank cap. Typically, the gasoline grade can also be determined based on the engine's compression ratio. Cars with a compression ratio between 8.6-9.9 should use 92 gasoline, while those with a compression ratio between 10.0-11.5 should use 95 gasoline. However, with the use of new technologies, the compression ratio alone cannot determine the gasoline grade. High-compression engines can be tuned to use lower-grade gasoline due to factors like ignition timing, turbocharging technology, and Atkinson cycle technology. Generally, the higher the gasoline grade, the higher the octane rating and the better the anti-knock performance. 92 gasoline contains 92% isooctane and 8% n-heptane, while 95 gasoline contains 95% isooctane and 5% n-heptane.