NHTSA vehicle safety data

2021 Honda CMX500 Recalls & Complaints

The 2021 Honda CMX500 has 2 NHTSA recall campaigns and 1 owner complaint on file as of November 3, 2026. Recall repairs are usually free at an authorized Honda dealer.

NHTSA recall and complaint data for the 2021 Honda CMX500. Recall data is refreshed daily from NHTSA.

2021 Honda CMX500 owner complaints

Owners have filed 1 complaint with NHTSA about the 2021 Honda CMX500, describing incidents dated August 5, 2021.

Most-cited components

Engine 1 complaint
Fuel/Propulsion System 1 complaint

Newest complaints

ODI #11464444 · Filed May 13, 2022
My 2021 Rebel CMX500A started stalling while I try to maintain a steady speed at around 1.2k miles. Despite me holding the throttle steady the bike erratically speeds and slows when I reach 2nd gear before eventually stalling out. All electronics keep working and no warning lights on the dashboard…

Read the full complaint

Handlebar Lock Screw May Detach and Interfere with Steering

NHTSA #26V500000 · Steering — Steering Wheel/Handle Bar · NHTSA notice

Reported July 30, 2026 · Honda (American Honda Motor Co.)

Potentially affected: 43,913 vehicles

Repair completion: 1.15% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)

Honda campaign KU8 · Owners notified September 28, 2026

Defect description

Honda (American Honda Motor Co.) is recalling certain 2017-2023, 2025 CMX500, 2017-2023, 2025-2026 CMX300, and 2025 Honda SCL500 motorcycles. The handlebar lock screw may loosen and detach.

Safety consequence

A detached screw may lodge between the frame and stem, interfering with steering and increasing the risk of a crash or injury.

Manufacturer remedy

Dealers will replace the lock screw and apply thread lock, free of charge. Owner letters were mailed September 29, 2026. Owners may contact Honda's customer service at 1-866-784-1870. Honda's number for this recall is KU8. This recall expands previous NHTSA recall number 26V146. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning August 4, 2026.

Dim Rear Reflector Lens/FMVSS 108

NHTSA #21V382000 · Exterior Lighting · NHTSA notice

Reported May 24, 2021 · Honda (American Honda Motor Co.)

Potentially affected: 28,528 vehicles

Repair completion: 34.28% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)

Honda campaign KM3 · Owners notified July 7, 2021

Defect description

Honda (American Honda Motor Co.) is recalling certain 2020-2021 Super Cub C125, CB500X, CB650R, CBR300R, CBR500R, CBR650R, Rebel 300, Rebel 500, Monkey, 2020 CRF250L, GROM, 2021 CRF300L, and CB500F motorcycles. The rear reflector lens may not reflect brightly enough. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 108, "Lamps, Reflective Devices, and Associated Equipment."

Safety consequence

A dim rear reflector may reduce the visibility of the motorcycle to other drivers, increasing the risk of a crash or injury.

Manufacturer remedy

Dealers will replace the rear reflector, free of charge. Owner notification letters were mailed July 7, 2021. Owners may contact Honda customer service at 1-866-784-1870. Honda's number for this recall is KM3.

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.

try.vin has no NCAP crash-test rating on file for the 2021 Honda CMX500. NHTSA rates some vehicles by body style — pickups by cab, vans by roof height — so check nhtsa.gov/ratings.

1 owner complaint has been filed with NHTSA for the 2021 Honda CMX500.

Engine; Fuel/Propulsion System

ODI #11464444

Incident: August 5, 2021 · Filed: May 13, 2022

My 2021 Rebel CMX500A started stalling while I try to maintain a steady speed at around 1.2k miles. Despite me holding the throttle steady the bike erratically speeds and slows when I reach 2nd gear before eventually stalling out. All electronics keep working and no warning lights on the dashboard came on until the engine would stall at which point the oil light comes on because the engine is no longer running. Once the bike stalls out it will sputter but not turn over if I try to turn it on. I can only turn it on by revving but then it will keep stalling even if with the clutch pulled in unless I consistently keep revving which is very dangerous in traffic. After about 5 minutes of constant revving while riding the problem goes away and won’t happen again until the bike sits for approx. over 12 hours. I tried taking the bike to the dealer when it first happened but they had a 2 month waiting list and as my only vehicle at the time I couldn’t afford to bring it in. After finding many others online with a very similar problem who said shops weren’t able to find a problem when they took their bikes in they recommended I use seafoam. I used just a capful in a full tank of gas and the problem stopped for that full gas tank and one full gas tank after without seafoam. But by the second gas tank I filled without seafoam the problem started again. Afterwards I started putting one capful of seafoam every other gas tank and the problem went away for the time being. Once I finished the bottle of seafoam at around 2.5k miles I tried running the bike without it and it was working until around 4k miles when again the problem came back. At this point I took it to the dealership despite the waiting list since I now have another car but they’re warning me that, since the bike is currently running because of the seafoam, even though they believe it is the throttle body, if they cannot find a problem or Honda refuses to cover the work under warranty I will be stuck with the bill.

Other Honda CMX500 model years

Check your 2021 Honda CMX500 VIN

Not every recall applies to every VIN in a given year. Enter the 17-character VIN from your Honda CMX500 at nhtsa.gov/recalls to see whether your specific vehicle has an unrepaired recall.

Check a Honda VIN