2020 KTM 790 Adventure Problems
Owner-reported complaints filed with NHTSA, grouped by component
Data refreshed
What this page shows
Everything below is an owner-reported complaint submitted to NHTSA about the 2020 KTM 790 Adventure, grouped by the component NHTSA recorded on the report. These are not confirmed defects, and they are not recalls. NHTSA does not verify most reports before publishing them, and a category with more reports in it is not evidence that a part is defective.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Reports by component
Ranked by how many owner reports name each component category
- Engine753.8%
- Brakes215.4%
- Fuel system215.4%
- Powertrain (other)17.7%
- Suspension17.7%
Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.
Each component in detail
What the reports in each category say, in the owners' own words
Engine
Reports naming the engine itself — including stalling, misfires, oil consumption, cooling and internal engine components.
From owner reports, verbatim
At approximately 14,700 Miles, the motor on the bike shut off abruptly while riding at 60 mph down the road while negotiating a blind curve. The vehicle was catastrophically disabled with no warning sounds, lights, or codes and left me stranded in an area with limited cell reception and in a blind spot for approaching vehicles with no shoulder to safely park on. The bike had not yet seen its first scheduled maintenance interval (manufacturer recommends 18,000 miles) and had received multiple oil changes well before scheduled intervals. No aftermarket modifications were done to the engine, air, fuel or other pertinent systems. Upon disassembling the motor for inspection, there was substantial catastrophic damage to the cam shafts and cam followers. It was concluded by a BMW certified master mechanic that the failure was due to premature wear of the cam followers and cam lobes. The cam follower broke in the motor causing a jump in timing and ejection of valve shims. The force of the malfunction was severe enough to spin a cam lobe 90 degrees out of position on the shaft, bend valves, and other damage. Upon inspecting the air box and oil jets, these components appear in good form and do not appear to have contributed to this malfunction. Upon contacting KTM, I was denied any assistance and have had to facilitate these repairs on my own out of pocket expense (approximately 2500 dollars so far). KTM also denies accountability for what appears to be a design or parts flaw that has been happening to other motorcycles manufactured between 2020 and 2023.
Engine requires multiple tries to start when cold due to inadequate fuel supply from fuel sensors or fuel injectors. A recurring issue, this happens upon starting every time the engine is cold. This is a known issue by KTM. When the bike was returned to dealer, they reset the sensors and the bike operated normally for a short time and then returned to faulty starting procedure. The starting issue places an inordinate drain on the battery putting the rider at risk of being stranded.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Brakes
Reports naming service brakes, the antilock braking system, brake hoses, master cylinders or the parking brake.
From owner reports, verbatim
The contact owns a 2020 KTM 790 Duke. The contact stated while riding approximately 30 MPH, the rear brake light failed to illuminate unless the brake pedal was fully depressed, not while slightly first applying the brake. The contact stated no warning light was illuminated. The contact had taken the motorcycle to a local dealer where it was diagnosed and determined that nothing could be repaired and that depressing the brake pedal with force was the only option to illuminate the rear brake light. The motorcycle was not repaired. The manufacturer had not been informed of the failure. The failure mileage was approximately 7,000.
MOTORCYCLE RIDER WAS CRUISING FORWARD AND IN AN UPRIGHT POSITION AT 15 MPH ON A PUBLIC ROAD WHEN THE FRONT BRAKES EXPERIENCED A COMPLETE AND SPONTANEOUS LOCKUP, THUS PREVENTING FORWARD TRAVEL. AT THE EXACT TIME OF FRONT BRAKE LOCK UP THERE WAS ZERO INPUT TO THE FRONT BRAKE CONTROL LEVER, MEANING THIS WAS A RESULT OF A DEFECTIVE BRAKING SYSTEM. THERE WAS NO MECHANICAL FEEDBACK FELT BY THE RIDER TO PROVIDE ANY WARNING THAT THE FRONT BRAKES WOULD SPONTANEOUSLY LOCK UP THE FRONT WHEEL. NOTE: MOTORCYCLE WAS PURCHASED BRAND NEW BY RIDER FROM AUTHORIZED KTM DEALER. INCIDENT OCCURRED WITH ROUGHLY 200 MILES ON ODOMETER. THE MOTORCYCLE WAS NEVER MODIFIED OR ALTERED ONCE IT LEFT DEALER LOT AFTER PURCHASE.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Fuel system
Reports naming fuel storage or delivery — tanks, pumps, lines, injectors and fuel leaks.
From owner reports, verbatim
Engine requires multiple tries to start when cold due to inadequate fuel supply from fuel sensors or fuel injectors. A recurring issue, this happens upon starting every time the engine is cold. This is a known issue by KTM. When the bike was returned to dealer, they reset the sensors and the bike operated normally for a short time and then returned to faulty starting procedure. The starting issue places an inordinate drain on the battery putting the rider at risk of being stranded.
Motorcycle takes multiple attempts to start and run - minimum 3 at this point.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Powertrain (other)
Powertrain reports that are not specifically the engine or transmission — driveshafts, axles, transfer cases and differentials.
From owner reports, verbatim
Riding at a constant speed in either 3rd or 4th gear, approx. 30-40mph. Was preparing to make a left turn in the left turn lane so began decelerating by downshifting through all gears until reaching neutral. Once I got to neutral, the engine stalled within 1 or 2 seconds later. Light braking was being applied during this event. Engine stalled while motorcycle was still in motion, approx around 10-20mph. Used brakes to completely stop motorcycle and restarted it without issue. There are lots of discussions about this engine stalling issue in forums online.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Suspension
Reports naming suspension components — springs, struts, shocks, control arms and related hardware.
From owner reports, verbatim
The main rear shock shaft seal has failed on two separate occasions causing shock oil to spill all over the catalytic converter posing a huge risk for fire. On both failure instances the motorcycle was being transported on a motorcycle specific hitch rack on the back of my pickup truck. The first shock seal failure occurred when I was transporting the motorcycle to my local dealer for service and the temperature was 16 degrees Fahrenheit during transport. The second shock seal failure occurred when I was transporting the motorcycle to Moab for a riding trip and the temperature dropped down to -6 degrees Fahrenheit during transport. KTM completed the first repair under warranty, which only lasted about 9 months when the shock seal failed the second time. I had to pay nearly $600 to get the second failure repaired by a KTM dealer using KTM parts. Both shock seal failures caused shock oil to spill all over the catalytic converter posing a huge fire risk. At this point I seriously doubt the durability and safety of the shock and I'm considering replacing the shock with an aftermarket one that won't fail and cause a fire.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
Elsewhere on this vehicle
Data sources
- NHTSA Office of Defects Investigation — owner-reported complaints and the components recorded on them
Data on this page last refreshed .