2015 Honda Accord: Sudden loss of power
Common wear/failure (not a recall)
Symptoms
Owners of the 2015 Accord report: sudden loss of power. CarComplaints.com lists 9 owner complaints, average mileage 34,900 miles.
NHTSA has 125 owner complaints for the 2015 Accord in this area. Examples:
- NHTSA complaint ODI #11760493 (filed 08/28/2026): “This has actually been a problem since i first got the car in 2015 but probably started happening in 2016. but it happens so intermittently that i hardly thought about it or figured it just needed a new battery. but i changed the battery and it is still happ…”
- NHTSA complaint ODI #11735958 (filed 05/06/2026): “2015 honda accord ex-l presenting with constant knocking in the lower back part of the engine. knocking varies with engine rpms and is consistent across all drives. oil has been maintained and at time of checking full, oil presented with copper fragments withi…”
Likely causes
Sources do not establish a single root cause; diagnosis is needed. Owner-reported fixes are listed below.
Fix, in plain English
Most common owner-reported solutions on CarComplaints.com: took to honda fixed issue wasnt 2000 on other shops and 1600 (1 reports). Check for open recalls and extended warranty coverage with a dealer before paying out of pocket.
DIY difficulty: Pro
Internal engine work (lifters, oil consumption, fuel dilution diagnosis) requires engine teardown or dealer software/tests. (Our assessment.)
Cost
CarComplaints.com owners report a typical repair cost of about $1,600 (owner-reported average, not a quote).
Typical parts (search links, no affiliate codes)
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