A4 allroad quattro Audi S4 Saloon

50
>>> Lightweight expertise
Less weight. More savings, power and
endurance. Audi lightweight technology.
What started with lightweight body
construction has now made its way into
nearly all areas, combining innovative
materials such as aluminium, carbon
andmagnesium, intelligent design
principles and resource-saving manufacturing
processes into an overall concept.
>>> Aerodynamics
Less drag, more efficiency. Thanks to the
consistently aerodynamic styling of the
vehicle’s lines, its underbody and spoiler
edges – in order to achieve the best possible
form for aerodynamic efficiency. Not
forgetting tyres with reduced rolling
resistance. All tested in the Audi wind
tunnel at up to 300 km/h.
>>> Transmission expertise
Improved efficiency thanks to improved
transmission ratios. A higher torque output
makes longer ratios possible, especially
inhighergears. For powerful torque in the
lowengine speed range which reduces
consumption– yet has no adverse effects
ondriving performance and sportiness.
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Audi ultra
Building an Audi is an extremely complicated business. And yet a simple principle applies for all models: all vehicle components
interlock precisely in order to produce emission-reducing synergies. What started in accordance with this principle at the
end of the 1980s with Audi lightweight construction and the revolutionary Audi Space Frame (ASF®) is now known as the
reversal of the weight spiral: every lightweight component has an impact on other components, which can in turn be made
smaller. In this way, existing forms and materials are continuously being improved with regard to their functionality, the
lowest possible weight and their production process. With the goal of building vehicles that are even more efficient and
make more sparing use of resources. At the same time, more and more efficiency technologies are being built into an Audi.
These include recuperation and the start-stop system. Not to mention progressive, efficient high-tech engines. For greater
driving dynamics, high compression, more efficient combustion and lower CO₂ emissions. All this is known as Audi ultra.
Today and in the future – towards CO₂ reduced mobility.
Audi ultra
Perfectly combined.
The future of efficient technologies.
>>> Recuperation
Braking that leads to even more efficient
driving. With brake energy recovery
(recuperation). Part of the kinetic energy
produced when braking and coasting is
temporarily stored in the vehicle’s battery and
then used when accelerating. Depending on
the driving cycle, this can save up to 3 % of
fuel.
>>> Engine expertise
Powerfully and efficiently driven. By Audi ultra
with efficiency technologies in the engine sector.
Such as Audi cylinder on demand and the Audi
valvelift system, which both reduce the amount of
energy consumed by the engine, or clean diesel
technology, which can help to reduce emissions.
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