Audi A8 L W12 quattro, with a long wheelbase and twelve-cylinder engine, set a new standard of luxury, dynamism and efficiency in the manufacture of cars from the top league. Audi A8 L will be released with a twelve-cylinder engine, but at the end of the year will be available with all engines currently offered for the A8. 6.3 FSI engine has the output of 368 kW (500 hp) and maximum torque of 625 Nm, giving up (460.98 pounds-feet) at speeds to 3250 rpm motor. This gives the long wheelbase Audi A8 type of performance normally expected of a sports car: it accelerates from 0-100 km / h (62.14 mph) in just 4.9 seconds and easily reach a maximum speed of 250 km / h (155.34 mph ).
The engine is known as the W12 because of its unusual layout: it has four rows of three cylinders with a 15-degree included angle between the two offset rows of cylinders in each broad cylinder block. The V angle between the two blocks is 72 degrees. This layout makes the W12 engine exceptionally compact: only just over 50 centimeters (19.69 in) long and therefore distinctly shorter than a V8. Height and width are both in the region of 70 centimeters (27.56 in).
The W12, in its latest form with a displacement of 6,299 cc, is an undersquare design. Its bore and stroke are 86.0 and 90.4 millimeters (3.39 x 3.56 in) respectively. Compared with the previous version the engineers have enlarged the cylinder bore. The forged crankshaft has a 12-degree angle of crankpin offset, so that the mixture in the 12 cylinders is ignited at the ideal interval of 60 degrees. The engine therefore runs exceptionally smoothly, and the car’s occupants are unlikely to sense any of this supreme power at work unless it is at high engine speeds and severe loads. The Audi A8 L W12 quattro runs on 19-inch alloy wheels with a 15-spoke design reserved for this model, and size 255/45 tires. As an optional extra 20-inch wheels can be chosen, and even 21-inch wheels can be obtained from quattro GmbH.
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