From the Super Mario Wiki
Retrieved from "http://www.mariowiki.com/index.php?title=Rocket_Start&oldid=1912403"
“Get off to a Rocket Start! To launch from the starting grid at a high speed, press and hold at just the right moment during the countdown.”
Rocket Start (also referred to as Turbo Start or Boost Start) is a move used in all of the Mario Kart games. It is a short boost that occurs at the beginning of each and every race. It is executed by pressing the acceleration button in tune with the starting lights held by Lakitu. If the player over-revs when the final beep sounds, it will make the player's vehicle falter for a few seconds at the beginning of the course (sometimes known as a Dud Start).
To perform a Rocket Start, drivers must press and hold the corresponding acceleration button when a race is about to start. How to use it depends on which installment in the series and which control scheme the player uses.
The Double Dash!! is a technique that can be performed only in the co-op play mode of Mario Kart: Double Dash!!, which is named after the game's subtitle. Both players must press at the same time when the light turns green to perform this technique, which will make the kart be launched at a higher speed. A blue trail will follow the kart, showing that the technique was performed correctly. This move's control is slightly different to that of a normal Rocket Start.
Super Mario Galaxy
A form of Rocket Start appears in Super Mario Galaxy. At the beginning of a Cosmic Mario or Cosmic Luigi race, if the player holds the up, then when the timer hits 2, and then hits just as the race starts, Mario or Luigi will get an extra boost at the beginning of the race. This can be shown by a yellow color appearing on Mario or Luigi, shrinking gradually, showing the end of the speed boost.
Names in other languages