2012 Harley-Davidson Flhx Engine Problems
- Complaints
- 1about this part
- Share
- 6%of 16 total for the year
- Median mileage
- 27,405miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the engine of the 2012 Harley-Davidson Flhx, 6% of the 16 complaints for this model year. Where a mileage was given, the median is 27,405 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.
“Motorcycle surges unexpectedly and then also loses throttle control. The first incident I was pulling out of a parking lot into traffic and as soon as I got into the traffic lane motorcycle lost all throttle response but motor was still running. Traffic was a 4 lane street with speed posted at 35 MPH. There was no shoulder and only a curb. I had nowhere to pull over. I almost got hit by several passing vehicles. I had a check engine light come on at the time I lost throttle response. I shut off ignition and cycled power a few times and the light went off and I had throttle response again. …”
NHTSA complaint #10761697, filed 2015-09, 27,405 milesRelated service bulletins
- 11014014Jan 24, 2025SERVICE BULLETIN M1650: MILWAUKEE EIGHT AND TWIN CAM CAMSHAFT DRIVE GEAR RETENTION KIT CHANGES. PURPOSE: This bulletin informs dealers that changes have been made to the Camshaft…
- 11005514Jul 10, 2024GENUINE MOTOR PARTS AND MOTOR ACCESSORIES BULLETIN PAB1158: OIL FILTER PACKAGING AND CASE QUANTITY UPDATE. PURPOSE: To inform dealerships that Harley-Davidson has made updates to…
Engine: other model years
Other parts of the 2012 Harley-Davidson Flhx
8 complaintsTires
2 complaintsTransmission and drivetrain
2 complaintsElectrical system
1 complaintsBody and structure
1 complaintsWheels
1 complaints
← All problems reported for the 2012 Harley-Davidson Flhx
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 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