comparisons are being made between various yamaha models, including the fz x hybrid and the xsr 155. other yamaha models, such as the fz s hybrid and fz rave, are also being compared to the xsr 155, as well as to the fz x hybrid. the xsr 155 has been spotted testing in india, and is being compared to non-yamaha models, including the ferrato fev 650 and keeway sr250.