A/C condenser leak — covered to 10 yearsmoderate
The A/C condenser can develop factory-defect pinhole leaks and stop cooling. The good news is coverage: Honda extended the A/C-condenser warranty to 10 years from the original purchase date with unlimited miles, for original and subsequent owners, on 2016–2021 Civics — so a 2016 is covered to roughly 2026. Mechanics warn that dealers sometimes push back on used-car owners or try to reseal a leaking compressor rather than replace the covered part, and that out of pocket the job runs about $1,800. Test the A/C hard on the drive and, if it is weak, invoke the condenser extension by VIN before it lapses.
Sources: NHTSA complaint and recall database, 2016 Civic · Independent mechanic channel transcripts (10th-gen Civic) and Honda manufacturer-communication bulletins (oil-dilution update; powertrain and A/C-condenser warranty extensions)
$0
Under the 10-year condenser extension
~$1,800
Out of pocket if denied