Audi quattro® Over 30 years of evolution.
More than 30 years ago, Audi
quattro® became the first permanent all-wheel drive system designed for
on-pavement use. In doing so, it blazed a path for the rest of the
automotive industry. Today Audi quattro® continues to set the standard
for all-wheel drive systems.
The traction advantage of Audi quattro®
is as apparent today as it was then. The first time quattro® made an
appearance at a timed event, it completed the course 30 minutes ahead of
the next fastest car. That would have been quite a victory, were it
competing. It was there simply to test the system and to warn onlookers
that racecars would be following.
When Audi introduced quattro® at
the World Rally Championship, the result was an astounding 24 wins over
the next 4 years. quattro® dominated the WRC, Pikes Peak hill climb,
IMSA-GTO and TransAm series until it was later deemed an unfair
advantage and banned from road racing altogether.
This unfair advantage is devised around a center differential
that shifts power to the axle with the most traction. The system has
been refined continually over the years, and depending on model, is set
up in one of five different ways.
R8 sports car's unique mid-engine requires a proprietary version of
quattro® utilizing a viscous coupling that can send between 15 and 30
percent of the engine's power to the front wheels.
vehicles with a transversely mounted engine configuration, such as the
A3 and the TT, include a version of quattro® that features a 4th
generation electronically controlled and hydraulically actuated
multi-plate clutch that normally sends 85 percent of the engine's power
to the front wheels. With the help of an advanced control module, the
system anticipates and helps prevent wheel spin, sending up to 100
percent of the engine's power to the rear axle as needed.
- In Audi vehicles with a front longitudinal engine configuration, quattro® is a mechanical system with a self-locking center differential and continuously variable torque
distribution. The system can send up to 60 percent of the power to the
front axle and up to 80 percent of power to the rear axle, as needed.
Thanks to a 40:60 rear default torque bias, the latest version of
quattro® offers more balanced handling than it ever has before.
- Models with the front longitudinal drivetrain configuration and the Audi S tronic®
dual-clutch transmission feature a faster acting, next generation crown
gear center differential that is also more compact and lighter in
weight. While the default torque bias is the same, the crown gear can
send up to 70 percent of power to the front axle or up to 85 percent of
power to the rear axle.
models with the front longitudinal drivetrains have a newly developed
Sports differential standard or available as an option. The system can
divert power between the right and left rear wheels to combat oversteer
or understeer, further enhancing traction and agility. This effect can
be increased or decreased via the vehicle's drive select controls.
Audi quattro®. The traction to confidently use more of the engine's power, more often.