Available with two engine choices, the Audi R8 Coupe and Spyder deliver the option of a 4.2 FSI V8 engine or an even more powerful 5.2 FSI V10. Using the latest in Audi innovation to be both powerful and efficient, the 4.2-liter V8 incorporates all-aluminum construction. With the help of FSI direct injection, the R8 Coupe 4.2 FSI engine produces an astonishing 420 hp and 317 lb-ft of torque. The R8 4.2 FSI is able to reach 60 mph from a standstill in just 4.4 seconds, powering on to a top speed of 187 mph. Those who demand the absolute highest level of power output may fit their R8 Coupes with the same 5.2 FSI V10 engine that is found in the competition R8 LMS GT3 class race car. The 5.2-liter, 10-cylinder engine benefits from many of the same innovations found on the 4.2 FSI V8, while the addition of two extra cylinders produces substantial power gains. With a high compression ratio of 12.5:1, the R8 V10 FSI produces a thrilling 525 hp and 391 lb-ft of torque.
Despite the marked increase in power, the V10 weighs only 68 pounds more than the V8. The 5.2 FSI utilizes an aluminum block fortified with silicon crystals for added strength, as well as aluminum cylinder heads. Redline arrives at 8,700 rpm, meaning that each piston travels 88 feet per second.
The result of this engineering is an Audi R8 Coupe with a 196 mph top speed.. The R8 Coupe 5.2 quattro accelerates from 0-60 mph in a scant 3.7 seconds. In the case of the Audi R8 Spyder, the same 5.2 FSI V10 drives the roadster to 62 mph in just 4.0 seconds and a top speed of 194.49 mph.
Source: Audi press