The Rarity of a part determines how common that part is within the game. The five levels of Rarity found in the game are A, B, C, D, and E, (with "A" being the rarest). Rarity also directly correlates with how costly it is to pay for repairs for that part, with repairs for rarer parts costing more.
|Rarity||% of Original Purchase Cost|
Percentages shown assume 100% sustained damage.