The R8 is available with a 4.2-liter V8 that produces 430 horsepower and 316 pound-feet of torque (R8 V8), a 5.2-liter V10 with 525 horsepower and 391 pound-feet of torque (R8 V10) and a 5.2-liter V10 that produces 550 horsepower and 398 pound-feet of torque (R8 V10 Plus). All three engines can be coupled with either a six-speed manual or a Engine, Transmission, and Performance. Audi endows the RS6 Avant Performance with a twin-turbocharged 4.0-liter V-8, which generates 621 horsepower and 627 pound-feet of torque. 2000 Audi A6 4.2 Road Test. Engine type: V8: Displacement (cc/cu-in) 4.2: Horsepower (hp @ rpm) 300 @ 6200: Torque (lb-ft @ rpm) 295 @ 3000: Transmission type: 5A: Track Test Results. Is Audi 4.2 V8 Reliable? Audi 4.2 l V8 is rated as one of the most reliable Audi engines. The brand is well-known for producing durable, high-quality, high-performance direct injection engines. Their lifespan can be for many years if you maintain them properly. Their torque and power make them become a powerful and excellent product. With only 333 scheduled to be built, the limited-edition GT model uses carbon fiber to trim 180 pounds and features a 560-horsepower version of Audi’s 5.2-liter V-10 engine. gasoline engines: AUDI V8 3.6L quattro V8 4AT (250 HP) AUDI V8 3.6L quattro V8 5MT (250 HP) AUDI V8 4.2L quattro V8 6MT (280 HP) %s engines: AUDI V8 4.2L quattro V8 4AT (280 HP) Complete timeline 2006 audi s4 b6 b7 4.2 L BHF engine motor Needs Work. B6 b7 Audi s4 bhf 4.2 v8 motor scored cylinder. Parts Only: Audi. $700.00. $150.00 shipping. or Best Offer. Benefits charity. The 2001 Audi A6 (C5) 4.2 V8 Quattro has a V 8, Petrol engine with 4172 cm3 / 254.6 cu-in capacity. How many horsepower (hp) does a 2001 Audi A6 (C5) 4.2 V8 Quattro have? The 2001 Audi A6 (C5) 4.2 V8 Quattro has 300 PS / 296 bhp / 221 kW. B8rG.