The engine of the Dominar 250 is smooth and refined according to Bajaj, which has marketed the motorcycle as good for both city riding and highway cruising. But there’s still a debate among riders about how refined, or not refined, it actually is in the real world. There are some users that complain about experiencing noticeable vibration at specific RPM ranges, but then some also applaud its smoothness. These perceptions are affected by factors such as break in period, maintenance habits and sensitivity to vibrations of the individual. I also talk about how the engine's character evolves through time and mileage. The question then arises as to whether the Dominar 250 truly is a smooth operator in all the riding situations that it aspires to, or does it make any compromises that potential buyers ought to know about? What is the overall engine refinement and level of NVH on other bikes in the class?