Quattro

What is the Quattro system?

The term Quattro, which means "four" in Italian, is much more than just a badge on an Audi grille. It is the brand's iconic all-wheel-drive technology, designed to enhance vehicle safety, performance, and stability. Unlike a front-wheel-drive or rear-wheel-drive car, a vehicle equipped with the Quattro system sends engine power to all four wheels simultaneously. This torque distribution allows for optimal traction under all circumstances, significantly reducing the risk of wheel slip and loss of control.

History and evolution of a legendary technology

The story of Quattro began in 1980 when Audi introduced the Audi Quattro at the Geneva Motor Show. This sports car, featuring permanent all-wheel drive, would quickly dominate the World Rally Championship, proving to the entire world the superior effectiveness of four-wheel drive on all types of terrain. The heart of the original system was a Torsen center differential (short for Torque Sensing), a mechanical masterpiece capable of automatically distributing torque between the front and rear axles based on available grip, without any electronic intervention.

Since then, the technology has continuously evolved:

Quattro with Torsen/crown-gear differential: Still used on longitudinal engine models (A4, A6, A8, Q7, etc.), this system is a permanent all-wheel-drive system, typically offering a baseline split of 40% to the front and 60% to the rear for a rear-biased driving dynamic, but capable of varying it instantaneously.

Quattro for transverse engines: On models such as the A3, TT, or Q3, the system uses an electro-hydraulically controlled multi-plate clutch. Under normal conditions, the car operates primarily in front-wheel drive to save fuel, but the system can engage the rear axle within milliseconds as soon as a loss of traction is detected.

Quattro with ultra technology: The latest generation, designed for maximum efficiency. This predictive system continuously analyzes driving data to anticipate traction needs. It can completely decouple the rear axle to reduce friction and fuel consumption, while remaining capable of proactively re-engaging all-wheel drive even before the driver perceives a loss of grip.

The tangible benefits of Quattro drive

Opting for a Quattro-equipped model offers tangible benefits in daily driving and during dynamic motoring.

Maximum safety: On wet, snowy, or icy roads, Quattro ensures vastly superior directional stability and traction. The car is less likely to slip during acceleration or understeer (slide at the front) in a slippery corner.

Optimized performance: When pulling away, power is transmitted to the ground without wheel spin, allowing for crisper acceleration. Exiting a corner, the system allows you to accelerate harder and earlier by transferring torque to the outer wheels which have more grip.

Versatility: Whether you live in the mountains, have to deal with winter conditions, or simply enjoy the feeling of safety and control, Quattro makes the vehicle more versatile and reassuring to drive year-round.

Quattro versus its competitors

Quattro is often compared to competing systems such as Mercedes-Benz's 4MATIC, BMW's xDrive, or Volkswagen's 4MOTION. While the end goal is the same—improving traction—the philosophies and technologies can differ. Historically, Audi's Quattro (featuring Torsen) distinguished itself through its mechanical and permanent approach, whereas others were more reactive. Today, with the widespread adoption of electronics, systems have become highly sophisticated and high-performing across all premium manufacturers, yet Quattro retains its aura as a pioneer and benchmark in the field of all-wheel drive.