From Mercedes-Benz 4Matic, BMW xDrive, and Volkswagen 4Motion, every German automaker today offers some form of all-wheel drive in its vehicles. But before Mercedes, BMW, and VW decided to make cars that send power to all four wheels, Audi was pioneering its own system — quattro.

This year, the now-legendary quattro turns 34 years old, with Audi building its six millionth quattro-equipped vehicle. Notably, it only took the brand a year and a half to hit the five-million vehicles mark. The milestone-setting 6,000,000^th Audi with quattro was an SQ5 coated in Monsoon Gray Metallic, with the vehicle destined for a customer in the U.S.

Today, roughly half of all new Audis are ordered with quattro, making it the most popular production all-wheel drive system. To put those figures into perspective, Audi produced a total of 710,095 quattro-equipped models just in 2013.

The Motrolix Take

Good on you, Audi. Who said that it Couldn’t Be Done?