What grade of gasoline should be used for Audi A4?
2 Answers
Audi A4 should preferably use premium unleaded gasoline with an octane rating of 95 or higher. Additional relevant information is as follows: If 92-octane standard gasoline is used, the power output will be reduced. In this case, it is recommended to drive at medium engine speeds and under low engine load conditions. Premium gasoline must be refueled as soon as possible. Do not use ethanol fuels with high ethanol content (E30-E100). The fuel system may be damaged. Using leaded gasoline or fuel with other metal additives even once may cause long-term damage to the exhaust catalytic purification function. It is recommended to only use gasoline additives approved by Audi. Anti-knock agents or anti-knock additives may contain metal additives, which can cause severe damage to the engine and exhaust catalytic converter. Since the vehicle is equipped with an exhaust catalytic converter, only unleaded gasoline is permitted. The gasoline must at least meet the V standard and be sulfur-free. Fuels with an ethanol content of up to 10% (E10) can be used.
I've been driving an Audi A4 for several years, and the manual clearly specifies using 95-octane gasoline. Never use 92-octane, as the engine is high-end designed with a high compression ratio, requiring higher-octane fuel to prevent knocking issues. When I first bought the car, I tried saving money by using 92-octane fuel, but the engine made knocking sounds during acceleration and shook violently. Later, I had to spend nearly two thousand yuan at the dealership to repair the fuel injectors and clean carbon deposits—definitely not worth it. 95-octane fuel burns cleaner, protecting the engine's lifespan, especially during frequent stop-and-go traffic in the city. For daily refueling, I recommend choosing reputable gas stations to avoid poor-quality fuel from small stations affecting performance. Sticking with 95-octane can also save on repair costs in the long run—it's worth it.
