Quattro (four-wheel-drive system)
Quattro (meaning four in Italian and stylized as quattro) is the trademark used by the automotive brand Audi to indicate that all-wheel drive (AWD) technologies or systems are used on specific models of its automobiles. The word "quattro" is a registered trademark of Audi AG, a subsidiary of the German automotive enterprise, Volkswagen Group.
Source: Wikipedia — Quattro (four-wheel-drive system) (CC BY-SA 4.0)