The ZX 50 is restricted to a mere 38 mph by its electronic CDI/Rev limiter and the restrictions in the gearing, but it can be derestricted if the driver desires to achieve higher speeds. In order to do this, the driver would need to purchase a separate CDI after market for an additional price, and the CDI would have to be specific to the Honda AF18E or AF16E Dio scooter, as Kymco does not produce one specific to its own scooters. Still, removing this restriction will only allow the driver maximum speeds around 43 mph, so the effort may not be worth it to most drivers. Furthermore, it tends to reduce the efficiency of emissions and lower the reliability of the engine itself. Fuel economy for the ZX 50 is suitable for a two-stroke model at about 65 to 70 mpg with normal use. In laymen’s terms, this means that a driver can go approximately 90 miles before needing to refuel.