Can the Sagitar 1.4T use 92-octane gasoline?

[LaDylan]

Sagitar 1.4T cannot use 92-octane gasoline. According to the manufacturer's specifications and the fuel grade indicated on the fuel tank cap, the Volkswagen Sagitar 1.4T engine requires the use of national standard 95-octane gasoline. Since parameters such as the engine's compression ratio and ignition timing are preset in the engine control unit, car owners should strictly follow the requirements in the user manual when selecting gasoline. The differences between 92-octane and 95-octane gasoline mainly lie in their octane ratings, anti-knock properties, and prices. 92-octane gasoline consists of 92% isooctane and 8% n-heptane, while 95-octane gasoline is composed of 95% isooctane and 5% n-heptane. Gasolines with different octane ratings have varying levels of isooctane content—the higher the octane rating, the greater the isooctane content, which results in better anti-knock performance. 95-octane gasoline is more expensive than 92-octane gasoline, primarily due to its higher proportion of isooctane. Each engine undergoes a comprehensive evaluation before leaving the factory, and based on its performance characteristics, the required anti-knock properties are determined, specifying which octane rating should be used. Fuel usage precautions: It is advisable to consistently use one type of gasoline, as mixing different grades can be harmful to the engine and fuel system. The choice of gasoline octane rating should be based on the engine's compression ratio, and higher octane ratings are not necessarily better. Avoid blindly using higher-octane fuels.