What type of gasoline should an Audi A6 use?
3 Answers
RON/ROZ 95 premium unleaded gasoline or RON/ROZ 91 regular unleaded gasoline. Below are the precautions for refueling: 1. The correct type of gasoline is indicated on the inside of the fuel filler flap. The vehicle is equipped with a catalytic converter and must only be operated with unleaded gasoline. 2. The gasoline must at least meet the V standard (GB 17930-2016 or GB 18351-2015) and must be sulfur-free. Fuel with an ethanol content of up to 10% (E10) can be used. 3. The gasoline grade is differentiated by the octane number (ROZ). Do not use ethanol fuels with high ethanol content (E30-E100), as they can damage the fuel system.
When I first drove the Audi A6, I also struggled with the fuel choice. I remember staring at the 92 and 95 options at the gas station for a long time during my first refuel. Later, I specifically checked the manual, which clearly stated in black and white that all A6 models require 95-octane or higher gasoline. The engine is turbocharged with a high compression ratio, and 92-octane fuel can't handle it, leading to knocking. Once on a business trip, I couldn't find 95-octane fuel and reluctantly filled up with 92. Immediately, I noticed the engine sounded off during acceleration, like it was coughing. I quickly used up that tank and switched back to 95. Now, I always look for the green nozzle when refueling. As for the difference, 95-octane fuel is indeed more efficient. I tested it on the highway, and over the same distance, it saved me half a liter per 100 kilometers compared to my friend's 92-octane fuel. Plus, there's noticeably less carbon buildup.
My friend who works in auto repair told me that the fuel tank cap of the Audi A6 is printed with labels for 95 and 98. Its direct fuel injection technology is particularly sensitive to gasoline octane ratings. 92 octane doesn't have sufficient anti-knock properties, and incomplete combustion can damage the catalytic converter. My 2.0T A6 has now run 50,000 kilometers, always fueled with 95, and the spark plugs still look golden when removed. If you try to save money by using 92, the little you save on fuel won't cover the repair costs. Some gas stations might try to sell you additives, but it's really unnecessary. Sticking to 95 from reputable major stations is the best choice. Be especially careful during the first two years with a new car, as the engine hasn't completed its break-in period yet.
