The 3.0L engine with the 5th digit VIN '4' and engine ID CTU represents a blend of engineering excellence and high performance. This V6 engine is designed to offer both power and refinement, ensuring a driving experience that is as smooth as it is exciting. With its advanced supercharged configuration, the engine delivers immediate power and acceleration, making it ideal for those who seek a dynamic driving experience. The CTU engine's advanced engineering includes state-of-the-art fuel injection and air management systems that optimize performance while maintaining fuel efficiency. This ensures that drivers can enjoy spirited driving without compromising on fuel economy. Additionally, the engine's robust construction and meticulous attention to detail make it incredibly reliable, capable of handling both daily driving and high-performance demands with ease. With this engine, Audi has created a powertrain that excels in delivering a harmonious blend of power, efficiency, and reliability. It is the perfect choice for drivers who desire a powerful yet refined driving experience, providing the perfect balance of performance and economy. Whether tackling urban streets or open highways, this 3.0L engine offers a compelling mix of power and sophistication, ensuring that every drive is an adventure.