Have you had a talk with your dealer about this?
Most likely it is running fine.....as built.
Your dealer should have some ideas on getting more speed from this scooter.
BTW - when looking at this scooter before the purchase, what did they tell you about its performance?
Stig
They spoke mostly about its reliability (especially when starting) and for me that was a key point as I use the bike for commuting into the city. HOWEVER, I did expect more performance.
I test-rode the older Agility City model before purchase (they didn't have a test-ride model on the floor for the 16+) and this got speeds up to 55kph. Granted, this could've been a "super-tuned" model from the dealer – BUT when I drove my 16+ home for the first time I was reaching about 53kph downhill. After about 300km it started slowing dramatically, barely doing 45kph. I took it in for the first "tightening" service at 500km and mentioned the problem. They said afterwards everything looked fine, and the bike did pick up some speed, but has never exceeded 50kph since.
Point it, the bike IS DEFINITELY capable of more speed! So what could be causing this fluctuation in performance over time? I'm tempted to go back to the dealer, but I know I'll just get the stock response: "it's a 45kph EU moped, so if it goes faster without being tuned then lucky you!"