Quattro is Audi's branding for its legendary all-wheel drive (AWD) system. In simple terms, it's a technology that powers all four wheels of the car, not just the front or rear two. This provides superior traction, stability, and control, especially in challenging conditions like rain, snow, or on winding roads. Unlike part-time systems that engage only when slippage is detected, most Quattro systems are full-time, meaning they are always actively managing power distribution for optimal grip.
The system first debuted in 1980 and revolutionized automotive performance by bringing rally-proven AWD to production cars. The core component is a center differential (historically a mechanical Torsen gear-type differential in many models), which automatically splits engine power between the front and rear axles. Modern iterations have evolved with electronic controls, using a network of sensors to monitor wheel speed, steering angle, and throttle position. If a wheel begins to lose grip, the system can proactively redirect power to the wheels with the most traction in milliseconds.
The specific implementation of Quattro varies across Audi's lineup to suit different vehicle platforms, from sporty sedans to robust SUVs. For example, Quattro with ultra technology in models like the A4 or A6 prioritizes fuel efficiency by disengaging the rear axle when full AWD isn't needed, seamlessly re-engaging when required. High-performance models like the RS models often feature a more sport-tuned Quattro system with a rear sport differential that can actively vector torque between the rear wheels for sharper cornering.
| Model Example | Quattro System Type | Typical Front/Rear Power Split (Base) | Key Feature |
|---|
| Audi A4 Allroad | Quattro with ultra | 100%/0% to 40%/60% | On-demand, fuel-efficient |
| Audi S5 Sportback | Permanent Quattro | 40%/60% | Torsen center differential |
| Audi RS 6 Avant | Quattro with rear sport differential | 40%/60% | Torque vectoring rear axle |
| Audi Q7 | Quattro with self-locking center diff | 40%/60% to 15%/85% | Designed for on/off-road |
| Audi e-tron GT | Quattro (Dual Electric Motors) | Fully variable | Independent front/rear motors |
Ultimately, Quattro is more than just a feature; it's a core part of Audi's identity, delivering confidence-inspiring handling and a significant performance advantage over two-wheel-drive vehicles.
