The KTM Duke 890 R is highly praised by users for its supreme performance and handling, but the inconvenience of reliability is a common question among the potential buyers. Even in the '90s, KTM suffered some quality control issues—particularly compared to the bulletproof reliability of Japanese manufacturers. However, recent models have improved, and many owners claim trouble-free ownership. The debate is often about whether KTM’s performance edge and character justify any reliability tradeoffs. On that front, however, the 890 R sits on a different footing compared to cousins like the Yamaha MT 09 SP or Kawasaki Z900, as factors such as maintenance schedules, availability and level of dealer support, and whether you plan to be a long-term owner all come into play. Riders have to balance the fun and the novelty of the KTM against the perceived Japanese engineering reputation 'peace of mind.'.