Ducati MONSTER 821 problems and owner complaints
Explore the records behind recurring owner reports.
Key facts
5 owner complaints analyzed
3 distinct recall campaigns
900 mi median reported failure mileage
Scope: 2015 to 2021 model years. Data snapshot: . 5 complaints include usable failure mileage.
This selection has limited data. It remains available for lookup but is excluded from search indexing.
Most common problems
Service Brakes is the most frequently named component, appearing in 3 of 5 complaints (60.0%). A complaint can name multiple components.
| Topic | Matching reports | Share of complaints |
|---|---|---|
| Braking behavior | 4 | 80.0% |
| Engine operation | 1 | 20.0% |
Topic matches use published keyword rules. They describe mentions, including negations or comparisons, and do not confirm a diagnosis. Read the matching rules.
Component breakdown
Number of unique complaints naming each component. Top eight shown.
| Category | Count |
|---|---|
| Service Brakes | 3 |
| Engine | 1 |
| Fuel/Propulsion System | 1 |
| Service Brakes, Hydraulic | 1 |
Service Brakes: 3; Engine: 1; Fuel/Propulsion System: 1; Service Brakes, Hydraulic: 1
Reported problems by failure mileage
Complaint counts in mileage bands. These are not failure rates per vehicle or mile.
| Category | Count |
|---|---|
| Under 25,000 | 5 |
| 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: 5; 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 miles has the most reports with usable mileage (5). 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.
| Category | Count |
|---|---|
| 2019 | 1 |
| 2020 | 2 |
| 2021 | 2 |
2019: 1; 2020: 2; 2021: 2
Pattern summary
Service Brakes leads the component reports. Braking behavior appears in 4 complaint narratives. Engine operation appears in 1 complaint narratives. Use these patterns to inspect individual reports and prepare questions for a mechanic.
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.
Owner report 11425862 · 2021-07-21 (July 21, 2021)
The contact owns a 2015 Ducati Monster 821. The contact stated that while riding at a moderate rate of speed, the rear brakes failed as the motorcycle began to roll backward. The contact notified the dealer of the failure and expressed his concern about the dangers of a possible failure. The vehicle was towed to the dealer. The brake lines were bled, and the motorcycle was repaired. Upon speaking with the dealer, he was informed that they were aware of the potential failure with the brakes however, no action was taken. The contact felt unsafe o…
Owner-reported narrative. 1,500 miles reported. Look up ODI 11425862 at NHTSA ↗
Owner report 11186983 · 2019-03-15 (March 15, 2019)
ON 03/14/2019 WHILE RIDING THE MOTORCYCLE DURING THE DAY I EXPERIENCED A SUDDEN COMPLETE FAILURE OF THE REAR BRAKE SYSTEM WHILE NAVIGATING A TURN. I HAD BEEN ON THE BIKE FOR ABOUT AN HOUR WITH NO INDICATION ANYTHING WAS WRONG. IT WAS VERY SUDDEN AND ALMOST CAUSED ME TO LOSE CONTROL OF THE VEHICLE. UPON A VISUAL INSPECTION I NOTED THERE WAS NO FLUID LEAKING, FLUID LEVEL WAS FULL, BRAKE PADS ARE GOOD, AND NO ABS MALFUNCTION WAS INDICATED ON THE BIKES DISPLAY. IF NOT FOR MY RIDING EXPERIENCE I PROBABLY WOULD HAVE CRASHED. WEATHER WAS SUNNY AROUND…
Owner-reported narrative. 1,800 miles reported. Look up ODI 11186983 at NHTSA ↗
Owner report 11338814 · 2020-07-11 (July 11, 2020)
THE MOTORCYCLE STALLS WHEN COMING TO A STOP SINCE IT WAS NEW (PURCHASED MAY 2018), WITH THE CLUTCH ACTIVATED AND BIKE STILL ROLLING. I HAVE ALL DEALER SERVICE RECORDS AND VIDEOS DOCUMENTING THIS ISSUE. SEVERAL OTHER PEOPLE ON DUCATI FORUMS HAVE ALSO REPORTED THE SAME ISSUE. DEALER WAS UNABLE TO DIAGNOSE, AND DUCATI NA WAS UNABLE TO RESOLVE. I DEALT WITH THIS FOR ALMOST 2 YEARS UNTIL THE MOTORCYCLE WAS RETURNED TO DUCATI AS PART OF A LEMON LAW BUYBACK. THE STALLING IS A SAFETY ISSUE AND IS MUCH MORE PREVALENT AND SERIOUS THAN DUCATI WOULD LIKE T…
Owner-reported narrative. 565 miles reported. Look up ODI 11338814 at NHTSA ↗
Recalls by model year
All campaigns in the snapshot affecting each model year, including recalls announced years later.
Recall campaigns
Shared campaigns appear once in each affected model year.
| Category | Count |
|---|---|
| 2015 | 1 |
| 2016 | 1 |
| 2017 | 2 |
| 2018 | 3 |
| 2019 | 3 |
| 2020 | 2 |
| 2021 | 1 |
2015: 1; 2016: 1; 2017: 2; 2018: 3; 2019: 3; 2020: 2; 2021: 1