Before driving the exquisite V10-engined Audi R8 Spyder, Kelley Blue Book invited its YouTube fans to post questions regarding the car. Developing 525 horsepower from its 5.2 FSI unit, the Spyder cracks 100 km/h (62.14 mph) in just 4.1 seconds before thundering its way to a top speed of 313 km/h (194.49 mph). Do want.