2021 KTM 790 Adventure R Problems
- Complaints
- 22filed with NHTSA
- Median mileage
- —no mileage reported
- Recalls
- 0campaigns on record
- Trend
- FallingComplaints filed in the last 3 full calendar years are at least 25% lower than in the 3 years before.
Sources: NHTSA records for the 2021 KTM 790 Adventure R (complaints, recalls, investigations). Report an error
NHTSA recorded 22 consumer complaints for the 2021 KTM 790 Adventure R. The part named most often is engine, with 11 complaints (50% of the total), followed by fuel system (8) and brakes (5). Of all complaints, 1 involved a crash, according to the filers. NHTSA lists 0 recall campaigns and 0 technical service bulletins for this model year.
This model year has fewer than 25 complaints on record, so the numbers below can change a lot with a few new reports.
Which parts are reported most
Complaints can name more than one part, so the counts add up to more than the total. Select a part to see its complaints, recalls and bulletins.
- Engine11 50%
- Fuel system8 36%
- Brakes5 23%
- Exterior lighting4 18%
- Other or unknown3 14%
- Electrical system2 9.1%
- Tires1 4.5%
- Vehicle speed control1 4.5%
Example complaints
Engine: “The valve train of my bike failed and left me stranded in the woods. There were no signs or warnings beforehand. After further research online, I found that this issue has been happening quite a bit. Luckily it happened to me while my bike was parked. The issue is the valve train is wearing out prematurely and causing the bikes to run poorly or not run at all. My bike has 13,000 miles on it and other bikes have had more or less miles when this issue occurred. …”
NHTSA complaint #11678897, filed 2025-08Fuel system: “When I start the bike, it sounds like the engine is only running on one cylinder and misfiring. It runs 'rough' like this for about 30 -60 seconds and the revs are sitting between 1000-1300 instead of the normal 1300-1500rpm range. You can smell fuel while this is happening. It then 'pops' and the engine runs fine after that. I live in the Netherlands, but wanted to register the issue here as well for investigation.”
NHTSA complaint #11445537, filed 2021-12Brakes: “I have had three separate incidences of the either the front or rear brake sensor switch failing which requires replacement. It causes the brake light to not function. I do have one of the three switches for inspection. It has been confirmed by a mechanic. As it is out of warrantee there has been no manufacturer inspection. There is no indication that it is not working other than cruise control will not turn on.”
NHTSA complaint #11667944, filed 2025-06Exterior lighting: “Good day to whoever is reading! I've recently discovered that my brake light does not turn on on my bike no matter what brake i use front or rear. Only way it works if i push brake really hard, like way beyond regular or emergency braking. I've found similar issues online and people pointing on faulty brake sensors. They are located under the gas tank. It requires good amount of skill and time to replace them. But i did and my brake lights returned, but during a test ride i'm loosing my rear brake COMPLETELY. I take everything apart again and find out that rear brake sensor is leaking. …”
NHTSA complaint #11613634, filed 2024-09Complaints by year filed
Trend: falling. Complaints filed in the last 3 full calendar years are at least 25% lower than in the 3 years before.
Recalls and investigations
NHTSA lists no recall campaigns for the 2021 KTM 790 Adventure R in the data used here. A recall can apply to some vehicles of a model year and not others, so check a specific vehicle by VIN at nhtsa.gov/recalls.
Technical service bulletins
No technical service bulletins are on record for the 2021 KTM 790 Adventure R.
Other model years of the KTM 790 Adventure R
| Year | Complaints | Median mi | Recalls | Crash ★ | MPG | Score (50 = typical) | Trend |
|---|---|---|---|---|---|---|---|
| 2023 | 5 | — | 0 | — | — | — | Too new |
| 2022 | 8 | — | 0 | — | — | — | Not enough data |
| 2021 | 22 | — | 0 | — | — | — | Falling |
| 2020 | 6 | 1,000 | 2 | — | — | — | Not enough data |
| 2019 | 8 | 3,030 | 2 | — | — | — | Not enough data |
All KTM 790 Adventure R model years
Frequently asked questions
How many NHTSA complaints does the 2021 KTM 790 Adventure R have?
NHTSA recorded 22 consumer complaints for the 2021 KTM 790 Adventure R as of Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
What part of the 2021 KTM 790 Adventure R is reported most often?
Engine is named most often, in 11 complaints (50% of the total), followed by fuel system with 8.
Has the 2021 KTM 790 Adventure R been recalled?
NHTSA lists no recall campaigns for this model year in the data used here. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
Complaint counts come from NHTSA’s public complaint database; we count each complaint once. The source records for this vehicle are on nhtsa.gov. Scores and trends are our own summaries of that data, described in the methodology. This page is not legal, safety or repair advice: for a specific vehicle, check its VIN at nhtsa.gov/recalls and ask a qualified mechanic. See an error? Tell us.