Iam aproud owner of the nova 135.according to me it’s the best u can get.i get a avereage of around 40-45km depending on my riding conditions.initially I was getting an avereage of around 30kmpl but things changed after the second service.the dealers are very helpful and even the company officials are very sincere and responsive.the top speed which I could clock was around 87km/hr.But I firmly believe that it can do more than that.Only 1 problem that I faced was the same which everybody faces-the engine used to stop during initial stages of riding.But I have found out a solution to it.In case u face the same problem u can do this-warm the engine by riding the scootter for 10-15 minutes.Then put the scootter on mainstand and open the seat.beneath the seat uwill find a hood.Open the hood by removing the screw attached to it.The carbuerretor will be exposed to u.Over there u will find a screw which has a coiled spring on it.Keeping the engine on adjust the screw to get the correct idling speed which can be gauged from the sound engine sound.From the next time the engine will not stop.As far as comprision of nova 135 with activa is concerned there is no competition.I also own an activa which I purchased in 2002.And believe me, it is a bag full of problems.And u need a fortune for its servicing and accessories