I bought Honda Activa 4G in May 2017. It had 110 cc engine and I was promised that its mileage would be 60 km per litre on highways. However, I never got above 35-40 km even though I drive on an avg 40 km per hour. Apart from that, the thing that I found better than the earlier model is its pick up.
Honda has fitted a more powerful engine and also increased the storage space by a little.