Skip to content
EnginePart report

2017 Harley-Davidson Flhxs Engine Problems

Complaints
2about this part
Share
29%of 7 total for the year
Median mileage
5,000miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 2 complaints about the engine of the 2017 Harley-Davidson Flhxs, 29% of the 7 complaints for this model year. Where a mileage was given, the median is 5,000 miles.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“The contact owns a 2017 Harley Davidson Street Glide FLHXS. The contact stated that while riding at an undisclosed speed, the vehicle experienced a high RPM and then lost motive power. The dealer was made aware of the failure and scheduled an upcoming appointment. The vehicle was not diagnosed nor repaired. The manufacturer was not made aware of the failure. The contact related the failure to Technical Service Bulletin: M1450 (Milwaukee-Eight Equipped Vehicles - Loss of Power or High Engine Braking). The failure mileage was approximately 5,000.”

NHTSA complaint #11493945, filed 2022-11, 5,000 miles

Related service bulletins

Engine: other model years

YearComplaintsShare of year
2019350%
2018117%
2017229%
2015117%
2014212%

Other parts of the 2017 Harley-Davidson Flhxs

Transmission and drivetrain
3 complaintsSuspension
2 complaints

← All problems reported for the 2017 Harley-Davidson Flhxs

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology