2021 Honda CBR300R problems and owner complaints
Explore the records behind recurring owner reports.
Key facts
0 owner complaints analyzed
1 distinct recall campaigns
Not available median reported failure mileage
Scope: 2021 model year. Data updated: . 0 complaints include usable failure mileage. View data status.
This selection has limited data. It remains available for lookup but is excluded from search indexing.
Most common problems
No owner complaints are recorded for this selection. A complaint can name multiple components.
Component breakdown
Number of unique complaints naming each component. Top eight shown.
No usable records for this chart.
| Category | Count |
|---|
No records.
Reported problems by failure mileage
Complaint counts in mileage bands. These are not failure rates per vehicle or mile.
| Category | Count |
|---|---|
| Under 25,000 | 0 |
| 25,000 to 49,999 | 0 |
| 50,000 to 74,999 | 0 |
| 75,000 to 99,999 | 0 |
| 100,000 to 149,999 | 0 |
| 150,000 and above | 0 |
Under 25,000: 0; 25,000 to 49,999: 0; 50,000 to 74,999: 0; 75,000 to 99,999: 0; 100,000 to 149,999: 0; 150,000 and above: 0
No usable failure mileage is recorded. 0 complaints have missing, zero or invalid mileage.
Complaints over time
Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.
No usable records for this chart.
| Category | Count |
|---|
No records.
Pattern summary
There is not enough complaint evidence to summarize patterns.
Calculated from recorded counts. An AI narrative has not been published for this selection.
Complaint evidence
Examples provide context, not a representative sample or a verified diagnosis.
Vehicle analysis explorer
Inspect model-year patterns, reported mileage, monthly activity and the evidence behind each signal.
Data completeness
0 unique complaints in this selection. Analysis snapshot: 2026-10-01.
Missing, zero and invalid mileage is excluded. Dates after the snapshot are excluded. Examples are limited selections, not a representative sample.
Problems by model year
Model-wide comparison of the eight most reported components across the model. Cells show counts and shares within each model year. Open a cell for source examples.
| Component | 2015 | 2016 | 2017 | 2018 | 2020 | 2021 |
|---|---|---|---|---|---|---|
| Engine | 5100.0%ODI 10907109I RECEIVED A WARANTEE RECALL NOTICE FOR MY HONDA CB300R MOTORCYCLE EARLY AUGUST. IT IS NOW MIDDLE,LATE SEPT. ALMOST 60 DAYS. I MADE AN APPOINTMENT TO HAVE THE ENGINE REPAIRED AS DESCRIBED ON HONDA SAFTEY RECALL NOTICE NHTSA RECALL 16V-528 AT THE HONDA LOCATION AT 14827 N CAVE CREEK RD. PHOENIX AZ. 85032. [phone removed]. THE SERVICE DEPT. TECH DERRICK, WAS VERY HELPFUL AND HE INFORMED ME THAT HONDA HAD TO SEND A REPAIR KIT TO THEM. HE SAID HONDA CORPORATE WAS VERY SLOW IN RESPONSE TO THIS REPAIR REQUEST BECAUSE THEY WANTED TO SERVICE THEIR UNSO… | 250.0%ODI 10926664TL* THE CONTACT OWNS A 2016 HONDA CBR300R MOTORCYCLE. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 16V528000 (ENGINE AND ENGINE COOLING) HOWEVER, THE PART TO DO THE REPAIR WAS UNAVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE MANUFACTURER WAS MADE AWARE OF THE ISSUE. THE CONTACT HAD NOT EXPERIENCED A FAILURE. PARTS DISTRIBUTION DISCONNECT. | 1100.0%ODI 11374919 · 5,000 miAS I WAS DRIVING GOING AROUND 60MPH, SUDDENLY MY ENGINE LOST POWER, THE MOTORCYCLE SHUT OFF AND AS A RESULT MY REAR TIRE LOCKED UP FOR A SPLIT SECOND. I WAS ABLE TO TO GET TO GET OFF THE ROAD, THANKFULLY NO ONE WAS HURT. AS I TRIED TURNING THE MOTORCYCLE BACK ON, ALL IT DID WAS TICK AND DID NOT START. AFTER BEING UNSUCCESSFUL IN TURING IT BACK ON, I HAD TO TOW IT TO THE DEALERSHIP WHERE I HAD TO PAY FOR A DIAGNOSTIC TO SEE WHAT WAS WRONG. THEY TOLD ME IT APPEARED THAT MY ENGINE WAS SEIZED AND WOULD NEED A ENGINE REBUILD AND THAT I WOULD NEED … | 00.0%No examples available for this selection. | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. |
| Electrical System | 00.0%No examples available for this selection. | 250.0%ODI 11186567 · 450 miI M GOING TO THE DEALER ASK FOR THE SAFETY CLAIM RECALL ISSUE WITH MY HONDA CBR300R AND THE SERVICE GUY SEND ME TO ANOTHER DEALER TELLING ME THAT THE CLAIM IS ALREADY DID FOR ANOTHER DEALER AND WHEN I HAVE 1 FULL WEEK WAITING AND WHEN I CHECK THE INFORMATION APPEAR LIKE THE RESET FOR THIS CLAIM RECALL DID THE SAME DAY FOR THIS DEALER IN SANTA CLARITA AND THE ISSUE IS CONTINUE WITH MY BIKE. I PAY TRAVELING FOR DROPE MY BIKE TO THIS DEALER AND STILL THEY HAVE MY BIKE THERE. | 00.0%No examples available for this selection. | 00.0%No examples available for this selection. | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. |
| Power Train | 240.0%ODI 10915409 · 18,050 miTL* THE CONTACT OWNS A 2015 HONDA CBR300R. THE CONTACT STATED THAT THE VEHICLE WAS SERVICED PER NHTSA CAMPAIGN NUMBER: 16V528000 (ENGINE). SINCE THE REPAIR, WHEN THE CONTACT SWITCHED GEARS OR WHEN THE VEHICLE WAS PLACED IN NEUTRAL, THE REAR OF THE VEHICLE SHOOK AND THE WHEEL RUBS AGAINST THE VEHICLE. THERE WERE NO WARNING INDICATORS ILLUMINATED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 18,050. | 00.0%No examples available for this selection. | 00.0%No examples available for this selection. | 00.0%No examples available for this selection. | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. |
| Electronic Stability Control (Esc) | 00.0%No examples available for this selection. | 125.0%ODI 11186567 · 450 miI M GOING TO THE DEALER ASK FOR THE SAFETY CLAIM RECALL ISSUE WITH MY HONDA CBR300R AND THE SERVICE GUY SEND ME TO ANOTHER DEALER TELLING ME THAT THE CLAIM IS ALREADY DID FOR ANOTHER DEALER AND WHEN I HAVE 1 FULL WEEK WAITING AND WHEN I CHECK THE INFORMATION APPEAR LIKE THE RESET FOR THIS CLAIM RECALL DID THE SAME DAY FOR THIS DEALER IN SANTA CLARITA AND THE ISSUE IS CONTINUE WITH MY BIKE. I PAY TRAVELING FOR DROPE MY BIKE TO THIS DEALER AND STILL THEY HAVE MY BIKE THERE. | 00.0%No examples available for this selection. | 00.0%No examples available for this selection. | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. |
| Engine And Engine Cooling | 00.0%No examples available for this selection. | 125.0%ODI 11525066 · 5,000 miThe contact owns a 2016 Honda CBR300R motorcycle. The contact stated that while riding approximately 25 MPH, the motorcycle stalled. The contact was unable to restart the motorcycle. The motorcycle was towed to the local dealer who diagnosed that the crank shaft had fused to the connecting rod and the crankshaft assembly needed to be replaced. The motorcycle was not yet repaired. The manufacturer was not yet contacted regarding the failure. The contact stated that the motorcycle had experienced the failure listed in the NHTSA Campaign Number: 1… | 00.0%No examples available for this selection. | 00.0%No examples available for this selection. | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. |
| Vehicle Speed Control | 00.0%No examples available for this selection. | 00.0%No examples available for this selection. | 00.0%No examples available for this selection. | 1100.0%ODI 11266879TL* THE CONTACT OWNS A 2018 HONDA PIONEER 1000. WHILE IDLING IN REVERSE AND DEPRESSING THE BRAKE PEDAL THE VEHICLE INADVERTENTLY REVERSED. AS A RESULT, THE VEHICLE STRUCK THE PERSON STANDING IN THE REAR OF THE VEHICLE AND COLLIDED WITH A SIDE-BY-SIDE UTILITY VEHICLE IT WAS ATTEMPTING TO TOW. THERE WERE NO WARNING INDICATORS ILLUMINATED. THE INDIVIDUAL THAT WAS STRUCK SUSTAINED BRUISES TO HIS LEG THAT DID NOT REQUIRE MEDICAL ATTENTION. THE CONTACT STATED THAT THE FAILURE RECURRED WHILE ATTEMPTING TO HOOK UP THE OTHER VEHICLE TO TOW. THE CONTACT … | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. |
| Wheels | 120.0%ODI 10915409 · 18,050 miTL* THE CONTACT OWNS A 2015 HONDA CBR300R. THE CONTACT STATED THAT THE VEHICLE WAS SERVICED PER NHTSA CAMPAIGN NUMBER: 16V528000 (ENGINE). SINCE THE REPAIR, WHEN THE CONTACT SWITCHED GEARS OR WHEN THE VEHICLE WAS PLACED IN NEUTRAL, THE REAR OF THE VEHICLE SHOOK AND THE WHEEL RUBS AGAINST THE VEHICLE. THERE WERE NO WARNING INDICATORS ILLUMINATED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 18,050. | 00.0%No examples available for this selection. | 00.0%No examples available for this selection. | 00.0%No examples available for this selection. | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. |
Darker cells indicate a larger share of submitted complaints. Components overlap. This measures complaint composition, not failure probability.
Failure mileage by component
Median and middle 50% of usable owner-reported mileages. Ranges require at least five records.
| Component | Mileage range (25th–75th percentile) | Median | Usable records | Examples |
|---|---|---|---|---|
| No usable records for this analysis. | ||||
Complaint and recall timeline
Explore monthly filing activity alongside recall announcements. Up to ten years of monthly history is available.
Solid line: filed complaints. Dashed amber lines: recall announcement dates for this vehicle selection; markers include all recall components. The latest month is partial. Temporal proximity does not establish causation.
Monthly counts, recall campaigns and complaint examples
| Month | Complaints | Campaigns announced | Examples |
|---|---|---|---|
| 2024-11 | 0 | None | No examples available for this selection. |
| 2024-12 | 0 | None | No examples available for this selection. |
| 2025-01 | 0 | None | No examples available for this selection. |
| 2025-02 | 0 | None | No examples available for this selection. |
| 2025-03 | 0 | None | No examples available for this selection. |
| 2025-04 | 0 | None | No examples available for this selection. |
| 2025-05 | 0 | None | No examples available for this selection. |
| 2025-06 | 0 | None | No examples available for this selection. |
| 2025-07 | 0 | None | No examples available for this selection. |
| 2025-08 | 0 | None | No examples available for this selection. |
| 2025-09 | 0 | None | No examples available for this selection. |
| 2025-10 | 0 | None | No examples available for this selection. |
| 2025-11 | 0 | None | No examples available for this selection. |
| 2025-12 | 0 | None | No examples available for this selection. |
| 2026-01 | 0 | None | No examples available for this selection. |
| 2026-02 | 0 | None | No examples available for this selection. |
| 2026-03 | 0 | None | No examples available for this selection. |
| 2026-04 | 0 | None | No examples available for this selection. |
| 2026-05 | 0 | None | No examples available for this selection. |
| 2026-06 | 0 | None | No examples available for this selection. |
| 2026-07 | 0 | None | No examples available for this selection. |
| 2026-08 | 0 | None | No examples available for this selection. |
| 2026-09 | 0 | None | No examples available for this selection. |
| 2026-10 (partial) | 0 | None | No examples available for this selection. |
Emerging complaint spikes
Complete months in the latest six months with at least 10 complaints, at least twice the preceding 12-month average, and at least three square-root deviations above that average.
This is a descriptive screening rule, not a statistical defect finding. Publicity and reporting changes can increase submissions.
No complete months meet the spike thresholds for this selection.
Equal-age model-year comparison
Model-wide cumulative reports during the first three or five calendar years, starting with the model year (age 0). Only fully elapsed windows are compared.
2020: 0 complaints · 2021: 0 complaints
| Model year | Through age 0 | Through age 1 | Through age 2 |
|---|---|---|---|
| 2020 | 0 | 0 | 0 |
| 2021 | 0 | 0 | 0 |
Date coverage across each selected cohort
| Year | Incident dates used | Filing date fallbacks | Excluded dates |
|---|---|---|---|
| 2020 | 0 | 0 | 0 |
| 2021 | 0 | 0 | 0 |
Incident date is preferred when valid and no later than filing; otherwise filing date is used. Model year approximates age. Equal observation time does not adjust for sales, distance driven or reporting delays. One complaint linked to multiple model years can appear in each cohort.
Components reported together
Each cell counts unique complaints naming both components. Open a nonzero cell for examples.
| Component |
|---|
| No usable records for this analysis. |
Co-reporting does not establish that one component caused another concern.
Recurring narrative patterns
Specific keyword mentions beyond broad component labels. Matching includes negations and comparisons and does not confirm a diagnosis.
0 patterns with matching reports.
No narratives match the published patterns.