Symptoms
- Car feels sluggish or reluctant to coast
- Noticeably worse fuel economy
- One or more wheels running hot after driving
Likely causes
- CommonStuck or dragging brake caliperA caliper that doesn't fully release keeps constant light pressure on the rotor.
- CommonParking brake not fully releasingEven a partially engaged parking brake creates continuous rear brake drag.
- PossibleSwollen or degraded brake hose restricting fluid returnTraps pressure in the caliper even after releasing the pedal.
- Less commonWheel bearing binding, mistaken for brake dragCan feel similar but is a different underlying issue.
What to do
- Confirm the parking brake is fully released.
- After a short drive, carefully feel each wheel for uneven heat (one noticeably hotter than the rest).
- Note if the car feels like it's losing speed faster than usual with no braking input.
- Check fuel economy over the past few tanks for a noticeable, unexplained drop.
- Have a mechanic check each wheel for free rotation and caliper release with the car safely raised.
- Have any dragging caliper, hose, or parking brake component repaired or replaced.
Tools and parts
Brake caliperSearch: “brake caliper for your car make and model”
When to call a pro
See a mechanic to check for a dragging brake if the car won't coast normally or fuel economy has dropped unexpectedly.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.