What Octane Gasoline Should a Sagitar Use?
2 Answers
According to the engine displacement, the 1.2T and 1.4T models can use 95 octane gasoline, while the 1.6L model can use 92 octane gasoline. Below are the detailed explanations: 1. Gasoline octane rating represents the fuel's resistance to knocking (anti-knock index). Different octane ratings indicate varying levels of anti-knock performance, with higher numbers indicating better knock resistance. This is unrelated to the so-called quality of the gasoline itself. 2. Due to differences in anti-knock properties, different engine types require different octane ratings. Generally, 92 octane gasoline, with relatively lower anti-knock performance, is suitable for naturally aspirated engines, such as the Sagitar's 1.6L. On the other hand, 95 or 98 octane gasoline is more suitable for turbocharged engines, like the Sagitar's 1.2T and 1.4T models.
The back of my Sagitar's fuel tank cap is printed with '95 or above gasoline', and the sales guy specifically mentioned this when delivering the car. Volkswagen's TSI engine has a high compression ratio, and 95-octane gasoline has good anti-knock properties, making the engine run smoothly and fuel-efficiently. It's okay to use 92-octane in an emergency, but don't use it for a long time, as it can easily trigger the check engine light and cause the engine to make a ticking sound. I usually stick to Sinopec's 95-octane, which costs only a few cents more per kilometer than 92-octane, for peace of mind. Remember not to mix different octane ratings, and refuel when the tank is nearly empty, which is also good for the fuel pump.
