Brake Fluid Leak: Do Not Drive, Have It Towed
If your car is leaking or losing brake fluid, do not drive it. A leak from a line, caliper or master cylinder can lead to brake failure, so have the car towed. Brake fluid is clear to amber and slippery.
Can I drive it? Do not drive
Do not drive. Losing brake fluid can mean losing braking. Have the car towed.
Typical repair cost
$150-$500 for a hose, $250-$600 for a caliper, $400-$900 for lines.
General US estimates, not quotes. Prices vary by region, vehicle and shop.
A pedal that feels soft or sinks can come from the same leak: see spongy brake pedal. Low brake fluid can also turn on the ABS warning light. Not sure it is brake fluid? Compare it with an engine oil leak. To see what else it could be, ask AI Car Mechanic about your exact car.
⚠️ Safety Warning
This issue requires immediate attention. Continued driving may cause severe damage or safety hazards. Consider professional assistance if not experienced with this repair.
Symptoms to Look For
These signs indicate you might be experiencing this issue
- Puddle of clear/yellowish fluid near wheels
- Brake warning light on dash
- Pedal sinks to floor slowly
- Low brake fluid in reservoir
Potential Causes
Most likely reasons for this problem, sorted by probability
Repair Solutions
Step-by-step instructions to diagnose and fix the problem
1Inspect Lines & Calipers
- 1
Look for wet spots on the inside of wheels/tires
- 2
Look along the metal brake lines from the side for rust or dripping; never crawl under a car that is held up only by a jack
- 3
Do not drive if a leak is found; tow to a mechanic
Need professional help?
Find a repair shop near you, or describe your exact symptoms to the AI mechanic
When to See a Mechanic
Do not wait if any of these apply
- Any confirmed leak
- The pedal goes low
- The fluid level keeps dropping
How to Prevent It
Simple habits that stop this problem coming back
- Inspect brake lines for rust
- Replace fluid on schedule
- Look under the car after parking
Frequently Asked Questions
What does brake fluid look like?
Clear to light amber when new, darker with age. It feels slick like thin oil and can smell slightly fishy.
Can I top it up and drive?
No. A level that drops means a leak that can worsen suddenly.
Why is my car losing brake fluid?
A level that keeps dropping means there is a leak. The most likely sources are rusted brake lines, a leaking caliper seal or a master cylinder leak. Do not drive it; have the car towed to a mechanic.
Brake fluid is dripping near a wheel. What should I do?
Clear to yellowish fluid or wet spots on the inside of a wheel or tire point to a brake leak. Do not drive if a leak is found; tow the car to a mechanic.
Related Issues
AI-generated and informational only. This is not a diagnosis of your specific vehicle and does not replace inspection by a qualified technician.