
Taking the Audi A6L as an example, it requires 95-octane unleaded gasoline. The correct fuel grade is indicated on the inside of the fuel tank cover. The octane rating of gasoline represents its anti-knock performance, and the appropriate gasoline grade for different cars depends on the engine's compression ratio. Below is a detailed introduction to 95-octane gasoline: Overview: 95-octane gasoline consists of 95% isooctane and 5% n-heptane. High-compression engines should use high-octane gasoline. Using low-octane gasoline in a high-compression engine can lead to abnormal combustion, causing knocking, increased fuel consumption, and reduced driving performance. Notes: While high-compression engines can technically use lower-octane gasoline, it is not advisable to choose the fuel grade solely based on compression ratio. Instead, always follow the manufacturer's recommended fuel type.

I've been driving an Audi for over ten years, and my refueling habits are crucial. Most Audi models like the A4 and A6 are fine with 95-octane gasoline, but always check the owner's manual to confirm, as high-performance S or RS series may require 98-octane fuel to prevent knocking and protect the engine. Don't skimp by using lower-grade fuel like 92-octane—it might be fine short-term but can lead to carbon buildup over time, causing engine vibrations or starting difficulties. I recommend refueling at reputable, large gas stations where the fuel is cleaner with fewer impurities. In regions with significant temperature variations between winter and summer, opt for fuel with additives to enhance lubrication. During maintenance, have the fuel system checked to avoid costly repairs. Make it a habit to follow the manual's recommendations—your car will run smoothly and reliably.

I always fill my own Audi with 95-octane gasoline. Simple and practical is best - standard fuel like regular A3 is sufficient, but high-performance models like the SQ5 manual recommends using 98-octane to prevent issues. Choose reputable gas stations when refueling, don't try to save money at small stations where poor fuel quality can easily contaminate the engine. I once tried 92-octane and ended up with sluggish acceleration and increased noise, quickly switching back to the recommended fuel fixed it. Daily driving requires attention to not let the fuel tank run dry to protect the fuel pump. Don't neglect small details - Audi's comfortable driving experience owes much to good fuel. In the long run, using the right fuel saves on maintenance costs.

Using Audi's experience, the manual clearly states fuel requirements. Regular models are suitable for 95 octane gasoline, while high-performance versions like the RS series require 98 octane to enhance efficiency. On a tight budget? Using lower-octane fuel might save some money in the short term, but it can lead to engine issues, costing more in the long run. Choose reputable gas stations for reliable and stable fuel quality to prevent impurities. In actual driving, fuel efficiency depends on smooth driving habits rather than forcing lower fuel grades. Regular maintenance, such as checking filters, is also crucial. Overall, using the recommended fuel effortlessly extends your car's lifespan.


