# What Does Brake Fluid Do And Why Do Cars Need It?

> Brakes are one of the most important components of any car, and most modern cars come equipped with a hydraulic braking system, which needs brake fluid to function. What does brake fluid exactly do?

- **Source:** [SlashGear](https://www.slashgear.com/1891041/brake-fluid-explained-what-it-does-why-cars-need/?utm_source=gearopen.com&utm_medium=referral&utm_campaign=feed&utm_content=6859a0ab9401a4aca61d6a67)
- **Published:** 2025-06-23
- **Category:** Cars
- **Tags:** #brake #fluid #cars #does #hydraulic #acts #braking #calipers
- **Canonical:** http://localhost:4321/a/6859a0ab9401a4aca61d6a67

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_GearOpen's distilled summary. The full original article is published at SlashGear (source link above); GearOpen does not republish the source's full text._