How often should the brake fluid be changed in an Audi A4?

[McEmerson]

Audi A4 brake fluid should be changed every 20,000 kilometers or every two years. If the owner frequently uses the brakes during daily driving or operates in harsh driving conditions, the replacement interval should be adjusted flexibly. Brake fluid is the liquid used in hydraulic braking systems, which must be chemically inert, resistant to high temperatures, and not cause corrosion, softening, or swelling to metal and rubber components. Commonly used types include DOT3, DOT4, and DOT5. The Audi A4 is a B-segment vehicle manufactured by FAW-Volkswagen, featuring the addition of Quattro all-wheel drive mode, a more stylish and sporty exterior design, and outstanding performance in power and handling.

[DeAnastasia]

As a long-time Audi A4 owner, I know brake fluid replacement is no trivial matter. The standard interval is every 2 years or 24,000 to 30,000 kilometers, as recommended by Audi's official manual. Brake fluid absorbs moisture and degrades over time, lowering its boiling point which could cause issues during emergency braking, seriously compromising safety. I always get it changed at the dealership right on schedule, taking the opportunity to have the entire braking system inspected - checking brake pad wear for example - to ensure everything's in order. Delaying replacement might save money, but the risks are too great, especially in urban stop-and-go traffic. I recommend regularly testing fluid quality with a moisture test pen - if water content exceeds 3%, it's time to act. Don't forget to update maintenance records for next service reminders. Safety comes first - don't wait for an accident to regret it.

[LunaAnn]

In my opinion, driving safety is the top priority. The brake fluid replacement interval for an Audi A4 is typically every 2 years or approximately 20,000 miles. I always check the brake response before driving, and address any sluggishness promptly. When replacing, I use professional DOT4 brake fluid, with Audi recommending high-temperature resistant types—avoiding cheap alternatives. Neglecting replacement can lead to fluid deterioration corroding the brake lines, resulting in much higher repair costs. During maintenance, I always perform fluid quality tests, replacing it immediately if water content exceeds standards. Remember, maintaining a healthy brake system is taking responsibility for yourself and others on the road.

[Manuel]

I make it a habit to maintain my Audi A4 on schedule, and brake fluid is something that cannot be overlooked. Replacing it every 2 years is ideal, and it should also be checked after driving 20,000 kilometers. I usually handle it during maintenance at the 4S shop, using genuine fluid for peace of mind. Brake system failures pose too great a risk, especially in rainy weather when slipping is more likely. Regularly testing the moisture content is a good habit—simple yet practical. Safe driving starts with the small details.