Efficiency
At Audi, doing less is something we’re trying
to do more of. We’re working to use less fuel,
release less CO
2 and waste less energy. It’s why
we’ve incorporated a number of more efficient
technologies into the Audi A5 Sportback.
Recuperation
When a vehicle brakes, the brake discs convert
the kinetic energy into thermal energy, which is
wasted as it cannot be used. With a recuperation
system, like the one in the Audi A5 Sportback, the
kinetic energy is converted into useful electrical
energy. The way it works is simple. While the car is
coasting or braking, the alternator voltage is raised
above the level of the basic electrical system, which
enables the alternator to generate electrical energy
and store it temporarily in the battery. When the
vehicle accelerates, this energy is used to relieve
the load on the alternator, resulting in a fuel
saving of 3%.
Automatic Start-Stop function
In heavy traffic, your car still uses fuel and releases
CO
2, even when it’s stationary. The automatic
Start-Stop function counteracts this problem by
switching off the engine when your car comes to a
standstill. As soon as you touch the clutch, the car
restarts. In conjunction with TDI and TFSI, it helps
save 0.4 litres of fuel every 100km.
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