2018 Harley-Davidson Street Glide Problems & Issues
2018 model year · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated October 2026
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Preview the XT6 exampleAccording to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2018 Harley-Davidson Street Glide has 2 documented known issues, with 1 rated critical. The most serious is Milwaukee-Eight hydraulic clutch secondary actuator leaks internally and the clutch will not disengage - NHTSA recall 18V-734 ($0-$0 repair).
All 2 Known Issues
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Frequently Asked Questions
What are the most common Harley-Davidson Street Glide problems?
According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2018 Harley-Davidson Street Glide has 2 documented issues. The most frequently reported are: Milwaukee-Eight hydraulic clutch secondary actuator leaks internally and the clutch will not disengage - NHTSA recall 18V-734, Milwaukee-Eight sumping can cause power loss and strong engine braking — M1450. Of these, 1 is rated critical and should be addressed promptly.
Is the Harley-Davidson Street Glide reliable?
The 2018 Harley-Davidson Street Glide has 2 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 1 issue is rated critical: Milwaukee-Eight hydraulic clutch secondary actuator leaks internally and the clutch will not disengage - NHTSA recall 18V-734. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
How much does it cost to fix common Harley-Davidson Street Glide problems?
Repair costs for known Harley-Davidson Street Glide issues range from $0 to $0, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Milwaukee-Eight hydraulic clutch secondary actuator leaks internally and the clutch will not disengage - NHTSA recall 18V-734, typically costs $0-$0 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What is the 2017-2018 Harley-Davidson Street Glide Milwaukee-Eight hydraulic clutch secondary actuator leaks internally and the clutch will not disengage - NHTSA recall 18V-734?
Recall 18V734 / Harley-Davidson 0173 includes certain 2017–2018 Street Glide, Street Glide Special and CVO Street Glide motorcycles, with listed anniversary variants. Internal leakage at the secondary clutch actuator piston/seal can reduce reservoir fluid enough to introduce air. Repairs typically run $0-$0. Severity: high.
What is the 2017-2019 Harley-Davidson Street Glide Milwaukee-Eight sumping can cause power loss and strong engine braking — M1450?
Harley bulletin M1450 covers sumping on 2017–2019 Milwaukee-Eight Touring models, including Street Glide. Excess oil in the crankcase can produce power loss or pronounced engine braking during prolonged high-load operation and can cause internal damage. Oil at the air cleaner or… Severity: medium.
Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public motorcycle data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.