Honda Civic Fluid Leaking — What It Usually Is

Based on real repair records · last updated October 20, 2026
19.5%
of Honda Civic visits for a fluid leak involve A/C Refrigerant — typically $116 – $300 on this vehicle when it's the only fix
Computed from real Honda Civic repair visits where the customer reported a fluid leak.

Across all vehicles, the most common cause of a fluid leak is Gasket / Seal (19.2%). On the Honda Civic it is A/C Refrigerant (19.5%), so the order of suspects is different for this vehicle. The table below shows each fix for this vehicle next to the all-vehicle share, with what it costs on the Honda Civic.

What it actually turns out to be on the Honda Civic

The fix involvedHonda Civic*All vehicles*Typical cost†
A/C Refrigerant19.5%10.7%$116 – $300
Gasket / Seal11.9%19.2%$66 – $313
Brake Fluid11.2%8.8%$114 – $346
Valve Cover Gasket10.9%4.7%$166 – $355
Power Steering10.7%8.1%$130 – $526
Radiator9.2%6.8%$144 – $444
Water Pump7.4%6.6%$322 – $706
Hose6.7%10.9%$95 – $232
A/C Compressor5.2%1.9%$645 – $1,115
Other, rarer causessmaller shares—varies

*Share of visits whose repair involved this part, among visits for this complaint that ended in a parts repair. Combined repairs count toward each part involved, so shares overlap and don't add up to 100%.
†Middle half of real Honda Civic invoices (25th–75th percentile) when this was the only fix, parts + labor; rows marked "all vehicles" use all vehicle types.

More on this problem and this vehicle

Take this to the shop

The FixDozer Diagnosis Brief for this complaint puts the all-vehicle odds on one printable sheet. Bring it with this page: the table above shows how the Honda Civic differs.

Download the Diagnosis Brief (PDF, all vehicles)

View it online · Narrow it down step by step

Where these numbers come from. FixDozer computes statistics from a large, continuously updated body of real-world US automotive repair records.
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