Full Drive (フルドライブ Furu Doraibu) is the most powerful form of a Device. Some examples of Full Drive forms include:

• Bardiche's Zanber Form and its many derived forms implemented in Bardiche Assault
• Graf Eisen's Gigantform, which drastically increases the Device's size and destructive power
• Laevatein's Bogenform, used by Signum to cast her most powerful ranged spell, Sturmfalken
• Mach Caliber's Gear Exelion, which greatly increases Subaru's mobility and combat potential
• Raising Heart's Exelion/Exceed Mode, used by Nanoha to cast her most destructive bombardment spells

In The Battle of Aces and The Gears of Destiny, this is a state in which characters gain increased attributes and can perform "Full Drive Burst" finishing moves.