What I want to tell you that there is no major difference between activa 3g or activa 4g.They look almost similer only change is to bs-4 model engine.other than everything is same like it has same 109.2cc engine, power output 8bhp@7500rpm, torque output 8.83 nm@5500rpm.There is no digital instrument cluster.In performance wise both models( bs3 or bs4) are almost same.In my opinion it is a good vehicle but it little out date there are various option in this price point.
Thank you.