What is 4.2 audi engine?

The 4.2 Audi engine is a V8 engine that was produced by Audi from 1997 to 2011. It is a naturally aspirated engine with a displacement of 4,163 cc (4.2 liters) that is capable of producing up to 450 horsepower at high revs. The engine features a four-valve cylinder head, variable valve timing, and a forged crankshaft for added durability and performance. It was initially introduced in the Audi A8 luxury sedan but was later used in various other models, including the Audi S4, S5, RS4, and RS5. The engine is renowned for its smooth power delivery, responsive handling, and impressive acceleration, making it a favorite among driving enthusiasts and car lovers. It is also known for its reliability and durability, making it a favorite among long-distance commuters and those who value the longevity of their vehicles. The 4.2 Audi engine has won numerous awards for its performance and technological advancements, and it remains a favorite among Audi enthusiasts to this day.