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Thursday, October 20, 2005

Audi S8: The luxury-class sports model

Audi S8
Audi is presenting the new Audi S8 at the Tokyo Motor Show. Including the Audi TT Shooting Brake, Audi is one of the main attractions there.
Distinct sports appeal and supreme comfort – these are the two defining characteristics of the Audi A8. At the time of its market launch three years ago, this large saloon shot straight to the top of the luxury segment thanks to its dynamic qualities. The brand with the four-ring emblem is now unveiling a sporty top model of the very highest calibre in the luxury segment: the new Audi S8.

It will be appearing on the market in the mid of 2006, with a price tag of EUR 97,600.

The Audi S8 is equipped with a new V10 engine that capitalises on the expertise of the super sports car Lamborghini Gallardo. The 10-cylinder power unit develops 450 bhp of power and 540 Nm of torque from a swept volume of 5.2 litres. The torque value is achieved at as low an engine speed as 3,500 rpm. As on the Le Mans winning R8, the most successful racing car in the world, FSI petrol direct injection assures superior power output in the Audi S8. This luxury saloon sprints from 0 to 100 km/h in 5.1 seconds, and is electronically governed at 250 km/h.

In outfitting the S8 with the V10, Audi is introducing an engine technology that has long been demonstrating its performance potential in the world of Formula 1 racing. The Italian super sports car brand Lamborghini, a subsidiary of Audi, likewise regards the ten-cylinder engine as synonymous with dynamic power. This engine concept has a much more sporty emphasis than a comparable twelve-cylinder power unit. Ten-cylinder engines are more compact and lighter; thanks to the smaller number of components, they have lower moving masses and less internal friction.

The 450 bhp V10 is the second generation of Audi V-engines, all with a 90-degree included angle and a spacing of 90 millimetres between cylinder centres. Key areas of the Audi version have been reengineered compared with the engine in the Lamborghini Gallardo. The bore has been increased from 82.5 to 84.5 mm; the stroke is 92.8 mm and the displacement 5204 cm3. A so-called bedplate structure – an intermediate frame – reinforces the extremely compact crankcase, which is made from cast aluminium.

The V10 imparts the luxury saloon with the road performance of a high-calibre sports car. The Audi S8 races from 0 to 100 km/h in 5.1 seconds. The speed is not governed electronically until the needle reaches 250 km/h. The engine shows a distinctly modest thirst, needing only 13.9 litres of fuel per 100 kilometres – a figure achieved partly thanks to the consistent use of lightweight design, which clearly sets the A8 range apart from its competitors. With its innovative aluminium body, the Audi Space Frame ASF, the S8 weighs just 1940 kilograms, including the dynamic, sure-footed quattro drive. On the new Audi S8, every horsepower has to propel just 4.31 kilograms – the power-to-weight ratio of a sports car.

Typically for an Audi, the new S8 likewise focuses on quattro permanent four-wheel drive. As a result it produces superior traction in all surface conditions.
25 years of expertise acquired in this domain by the brand with the four-ring emblem have led to the development of a new quattro generation with asymmetric/dynamic torque distribution – further evidence of Audi's philosophy of "Vorsprung durch Technik".

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Audi S8


Source: Fourtitude


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