Page 1 of 1 At the 2001 Geneva Motor Show, Audi presented it's new flagship. On the outside it does not differ very much from the already well-known A8, except for about 13 centimeters (5 inch) of length and a few other details. Under the hood however is world's most powerful 12-cylinder in a limousine. This 6.0L W12 produces 420 horsepower and an impressive 550Nm of torque and powers all four wheels. This makes the car reach 100 km/h in 8.5 seconds and its (limited) top speed of 250 km/h in 38 seconds. Page 1 of 1