Autotomize raises the user's Speed stat by two stages and decreases the user's weight by 220 lbs. (100 kg), but cannot make the Pokémon's weight lower than 0.2 lbs. (0.1 kg).
This weight loss also affects the power of some moves that depend on the user's or target's weight. If the user uses Heat Crash or Heavy Slam, these moves may deal less damage, but if Heat Crash or Heavy Slam are used against the user, they may deal more damage. If Low Kick or Grass Knot are used against the user, they may deal less damage.
Autotomize's weight reduction is not transferred if the Pokémon uses Baton Pass.
It sharply boosts your Travel Speed and also makes you lighter.* It sharply boosts your Travel Speed, and you'll get the Autotomize status condition. In the Autotomize status condition, you'll become noticeably lighter on your feet!*
Autotomize refers to autotomy, the ability of certain animals to deliberately shed parts of their own body, usually to escape from a predator. It is common amongst reptiles and salamanders, as well as various invertebrates.
Autotomize is the only Steel-type move whose English name consists of a single word.