So many people shared there experience bad about Yamaha g5 .but comes to my experience I traveled so many times continuously 300 KMS in this bike at speed of 100 kmph I even get any issue.comes to mileage it give in highway 70 kmpl.city 55-60kmpl. Mileage depends on bike service, handling, riding style, . Even today I covered 100 KMS in 1 hour 10 minutes in these bike.every people kept in mind every bike mechanic cannot know about yamaha bike very well keep service the Yamaha with well known mechanic about yamaha.then see the results.