The smallest and least powerful vespa unik scooters have 50 cc engines while the largest and most powerful engines from Vespa are 200 cc. Vespa scooter engines of all sizes in between are also made to accommodate every type of driver. Since the beginning of Vespa scooters their popularity has spread across the world. Other companies have bought licenses to manufacturer and distribute Vespa scooters in nearly every country. Their popularity grew in part because of the convenient transportation alternative Vespa scooters originally created in cities and countries that greatly needed them to continue growth.

Though new models of vespa unik scooters are still being designed and sold, the older, original models have become a valued
possession, now considered vintage. Vintage Vespas are yypically those that have the first designed body style.