2018 Harley-Davidson Flhc Problems
Owner-reported complaints filed with NHTSA, grouped by component
Data refreshed
What this page shows
Everything below is an owner-reported complaint submitted to NHTSA about the 2018 Harley-Davidson Flhc, grouped by the component NHTSA recorded on the report. These are not confirmed defects, and they are not recalls. NHTSA does not verify most reports before publishing them, and a category with more reports in it is not evidence that a part is defective.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Reports by component
Ranked by how many owner reports name each component category
- Engine150.0%
- Fuel system150.0%
Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.
Each component in detail
What the reports in each category say, in the owners' own words
Engine
Reports naming the engine itself — including stalling, misfires, oil consumption, cooling and internal engine components.
From owner reports, verbatim
The contact owns a 2018 Harley-Davidson FLHC Heritage Classic. The contact stated while riding approximately 75 miles at 3500rpm at approximately 3,500 RPM, there was an oil pump defect in the sump. There also was unusual metal-on-metal sound. Additionally, there was oil leaking onto exhaust. The oil warning light illuminated. The contact also stated that there was a loss of power while riding at a lower speed. The motorcycle was taken to the local dealer to be diagnosed. The dealer informed the contact that after removing the the pump, there was not enough oil inside the pump. The contact was informed that the oil pump needed to be replaced. The motorcycle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 7,300. The consumer states that the oil leaks on long rides and Harley has a service bulletin for M8 engines 2017 to 2020 for oil pump sump problems.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Fuel system
Reports naming fuel storage or delivery — tanks, pumps, lines, injectors and fuel leaks.
From owner reports, verbatim
While idle fuel pushes out of overflow tube. The tank is usually not even half full when this happens. This has been a known issue with the manufacturer but haven't sent a recall out for it. They said they know that the pressure regulator was installed incorrectly from the factory.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
Elsewhere on this vehicle
Data sources
- NHTSA Office of Defects Investigation — owner-reported complaints and the components recorded on them
Data on this page last refreshed .