I buy activa 3g three months ago. 1st servicing done. And rode over 800 km. This is very stylish and eye catching white Dio. Its build up qulity and handling is good. so far looks maintaince free bike as it did not give any trouble as far as handling and whole bike. Its give mileage around 40 km. Its low because may be most of time I rode it in city not on higjways.
But there are cons in this bike are like morning sickness. It get some time to start the engine almost every morning. But after that runs smoothly all day. Its suspension is not good. looks it giving low mileage. Engine sound change are frequent. If bike is Ideal for 2/3 days its performance decreeses. Factory made bike is not good for pillion rider as no proper footstep given. But that can be solved by attaching side guard grill with footstep.
Its has good pick up and can ride over 70 km speed comfortably, all time of your journy. Single rider can reach speed more than 90 km. Even with pillion rider its run more than 70 to 80 km speed without stress to engine.
In Scooty segment its good scooty. And feeling like bike. Overall good so far.