
A6 requires an engine oil maintenance when the driving mileage reaches 15,000 kilometers, and a brake fluid replacement maintenance when the driving mileage exceeds 30,000 kilometers. Additional details are as follows: 1. Vehicle maintenance areas: Vehicles need regular maintenance, which refers to the preventive work of inspecting, cleaning, lubricating, adjusting, or replacing related parts of the vehicle on a regular basis. This mainly includes the maintenance scope of the engine system, transmission system, cooling system, etc. Through maintenance, the vehicle can maintain a clean and normal technical condition, eliminate potential safety hazards, and extend the vehicle's service life. 2. Vehicle maintenance content: Vehicle maintenance mostly includes minor maintenance and major maintenance. Minor maintenance refers to some routine maintenance items performed after the vehicle has been driven a certain distance to ensure its performance. Major maintenance is performed when the vehicle reaches a specified mileage, including the replacement of engine oil, engine oil filter, gasoline filter, etc.

My 2020 A6 has been running for almost three years, and the maintenance checklist is posted inside the glove box. The first service is due at 10,000 km or 12 months, mainly involving an oil and filter change, along with basic checks like tire pressure and brakes. After that, regular maintenance is required every 10,000 km, with oil and filter changes being mandatory. The cabin air filter and engine air filter should be replaced every 20,000 km to prevent odors inside the car. Brake fluid needs to be changed every two years, and spark plugs at 60,000 km. I pay special attention to the transmission fluid maintenance—it must be replaced at 80,000 km without delay. Every time I visit the dealership, they also rotate the tires and inspect the chassis and suspension. Finally, it’s advisable to adjust the schedule based on actual usage. For example, in humid southern climates, you might want to replace the air filter earlier.

As an technician with 10 years of experience, the 2020 A6 maintenance schedule is quite standardized. The first service is due at 10,000 km (whichever comes first), where engine oil and oil filter must be replaced. Subsequent basic maintenance every 10,000 km includes fluid inspection, chassis examination, and computer fault scanning. It's recommended to replace both cabin air filters at 20,000 km to prevent AC odors. Brake fluid moisture content should be checked at 30,000 km. The entire spark plug set must be replaced at 60,000 km - this is particularly crucial as Audi engines' high compression ratio can easily damage spark plugs. While the transmission fluid is labeled 'lifetime maintenance-free' in the manual, I strongly advise replacement at 80,000 km, having witnessed numerous transmission failures due to neglected changes. During major services, remember to perform wheel alignment and thorough brake system inspections.

Just reviewed my 2020 A6 manual yesterday. There are two types of service intervals: by mileage or time, whichever comes first. The first service is due after 10,000 km, followed by every 10,000 km, including basic services like oil and filter changes. The air filter is recommended to be replaced every 30,000 km, but I change mine every 20,000 km due to heavy sand and dust in the north. The cabin air filter is officially suggested to be replaced every 20,000 km, but it's better to do it earlier, especially if passengers have rhinitis. Brake fluid should be replaced for the first time after 3 years, then every 2 years. Spark plugs must be completely renewed at 60,000 km. I rotate my tires every 15,000 km to extend their lifespan. Regularly checking the brake disc thickness is also crucial.

Focus on a few key milestones: The first at 10,000 km requires a full vehicle inspection, along with an oil and oil filter change. After that, don't skip the regular maintenance every 10,000 km. The cabin air filter must be replaced every 20,000 km to prevent mold growth and health issues. At 30,000 km, inspect the braking system and suspension bushings. The 60,000 km mark is critical—replace spark plugs and inspect the timing chain. Transmission fluid should be changed around 70,000 km, earlier than the manufacturer's recommendation for added safety. Tires need thorough inspection at least every two years; replace them immediately if slipping occurs in wet conditions. Check the lighting system during every maintenance visit, as it's crucial for safety. Remember to reset the service counter in the vehicle's computer after each maintenance.

Key points extracted from the owner's manual: Basic is required every 10,000 kilometers or 12 months, including full synthetic oil and OEM oil filter replacement. Critical component replacement intervals are clearly defined: air filter every 30,000 km, cabin air filter every 20,000 km, and brake fluid first changed at 3 years then every 2 years. Spark plugs require a complete set replacement at 60,000 km - this is particularly costly but essential. Transmission fluid condition should be inspected at 60,000 km, with most technicians recommending replacement before 80,000 km. Auxiliary systems like electric power steering fluid are suggested for replacement every 5 years. Tires and brake pads should be inspected during every maintenance service - safety first. Finally, regular carbon deposit cleaning is recommended to maintain engine performance.


