I have created 2 videos on the Vivace and Tograc. They show the top speed of the Vivace S 270, Vivace S 350Q, and Tograc 150dQX. The Vivace S 270 and Vivace S 350Q's top speed was 157 mph and the Tograc 150dQX was 118 mph. hope you like! Vivace S 270 top speed: Tograc 150dQX top speed: Vivace S 350Q top speed: