Should the Volkswagen Tiguan use 95 or 92 octane gasoline?
1 Answers
According to official recommendations, the Volkswagen Tiguan should use 95 octane gasoline. When refueling, it is advisable to check the vehicle's user manual, which provides clear instructions. You can also find the fuel standard recommendation inside the fuel tank cap. Since parameters such as the engine's compression ratio and ignition timing are preset in the engine's computer, owners should strictly follow the user manual's requirements when selecting gasoline. The differences between 92 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. Gasoline with higher octane ratings has better anti-knock properties. 95 octane gasoline is more expensive than 92 octane because it contains a higher proportion of isooctane. Each engine undergoes comprehensive evaluation before leaving the factory, and based on its performance characteristics, the required anti-knock properties—and thus the appropriate gasoline grade—are determined. Fuel usage precautions: It is best to consistently use one type of gasoline; mixing different grades can harm the engine and fuel system. The choice of gasoline grade should be based on the engine's compression ratio, not on the assumption that higher octane is always better. Avoid blindly using higher-octane fuels.
