FixFluid Leaking From Your Car — What It Usually Is
The color and location of the puddle names the fluid: brown-black is engine oil, green/orange/pink is coolant, red is transmission or power steering, clear water under the A/C is normal condensation. The outcomes below cover leaks that weren't obviously oil or coolant at drop-off.
What it actually turns out to be
| The fix involved | Share of visits* | Typical cost† | Median |
|---|---|---|---|
| Gasket / Seal | 17.7% | $65 – $444 | $188 |
| A/C Refrigerant | 13.0% | $107 – $264 | $162 |
| Hose | 9.9% | $103 – $387 | $207 |
| Brake Fluid | 8.6% | $106 – $366 | $203 |
| Power Steering | 8.0% | $142 – $510 | $289 |
| Water Pump | 6.6% | $261 – $651 | $394 |
| Radiator | 6.6% | $189 – $624 | $401 |
| Thermostat | 5.5% | $165 – $408 | $262 |
| Valve Cover Gasket | 4.9% | $182 – $481 | $299 |
| Other, rarer causes | smaller shares | varies | — |
*Share of visits whose repair involved this part. Combined repairs count toward each
part involved, so shares overlap and don't add up to 100%. Among visits that ended in a parts repair.
†Middle half of real invoices (25th–75th percentile) when this was the only fix — parts + labor, all vehicle types.
Specific versions of this problem
Some flavors of this complaint point at different parts — each of these pages has its own odds and real repair reports:
Real repair reports
These are recent, paid visits for this complaint — the words as the owner said them, and what it turned out to be.
Car owners said
“Check for transmission leak”
“Inspect for fluid leak”
“Clean and reinspect fluid leak”
“Inspect fluid leak(s) - clean & add dye”
“Inspect for water leak”
“Leaking power steering fluid.”
What the technician found
“Customer was told by another shop *** suggest taking to transmission shop for repair. ***”
“CLEAN AREA, TEST DRIVE AND REINSPECT IF NECESSARY CUSTOMER STATES HE BELIEVES THERE IS AN OIL LEAK FROM ENGINE AREA. INSPECT AND ADVISE INspected and found lower oil pan gasket and oil filter adapter gaskets leaking. Airbag light is on Right lower tie rod i…”
“Customer stated a/c was inop. found compressor bad. replaced a/c compressor assy, both belts, recharge system and check operation.”
“Customer States: Evaluate check engine light on and fuel cap message on dash check and advise”
Red fluid
Transmission and power-steering fluid share the red family — location decides (center-rear vs front). Transmission cooler lines are a common, repairable source that beats fearing the worst.
Clear water
A clear, odorless puddle under the passenger footwell area in summer is A/C condensation — the system working as designed, not a leak.
The leak that moves
Fluids travel along the underbody before dripping, so the wet spot is often downstream of the source. Shops clean the area, add dye, and re-inspect — that step is what makes the eventual quote trustworthy.
Costs by vehicle
- A/C Recharge: Ford F-150
- Water Pump: Ford F-150 · Jeep Grand Cherokee
- Brake Pads & Rotors: Ford F-150 · Honda Accord · Toyota Camry
Take this to the shop
The FixDozer Diagnosis Brief puts this page on one printable sheet: what this complaint usually turns out to be, how often, and what each fix should cost — so when the diagnosis comes back, you already know whether the number fits.
Download the Diagnosis Brief (PDF)View it online · Narrow it down for your vehicle