How often should Volkswagen brake fluid be changed and how much fluid is needed?

2 Answers
LeonardoFitz
07/28/25 11:19pm
Volkswagen's brake fluid should be changed every two years or every 40,000 kilometers. Approximately 1L of fluid is required when replacing the brake fluid. The replacement interval for brake fluid depends on the brand of the fluid and the vehicle model, and brake fluid also degrades over time. Below is an introduction to brake fluid: Brake fluid, also known as automotive brake fluid, is the liquid used in a vehicle's hydraulic braking system. When the driver presses the brake pedal, the force is transmitted by the master cylinder's piston through the brake fluid to the wheel cylinders, causing the brake pads to expand and stop the vehicle. When the brake is released, the return springs pull the brake pads back to their original position.
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StEmerson
08/12/25 3:42am
As someone who frequently works on Volkswagen cars, I believe brake fluid should generally be replaced every two years or after driving 30,000 kilometers. The main reason is that brake fluid absorbs moisture from the air, and over time, increased water content can affect braking performance. In severe cases, it may even lead to system corrosion or a spongy brake pedal. As for the quantity, a complete fluid change with flushing typically requires about 1 liter of new fluid. Compact cars like the Volkswagen Golf usually need 0.8 to 1 liter, while mid-size vehicles such as the Passat may require around 1.2 liters—always check the vehicle manual for specifics. Don’t forget to have the job done at a reputable repair shop, where technicians will use professional equipment to test the fluid’s moisture content and ensure the purity of the new fluid. Regularly check the fluid reservoir level, and if it’s low, I recommend topping it up promptly. In short, don’t wait for an emergency—regularly replacing this small component will give you greater peace of mind while driving.
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