autoevolution 24 May 2021, 11:36 UTC · by Introduced for the 2017 model year with the second generation of the Porsche Panamera, the 4.0-liter V8 found in the Lamborghini Urus and Audi Sport models is a marvel of engineering. Capable of 650 PS or 641 American ponies, the force-fed lump isn’t without its faults as per a recall filed with the National Highway Traffic Safety Administration. 13 photos A manufacturing error that occurred during the engine block’s casting process is why cracks may develop on the running surface of the sixth cylinder’s bore, which isn’t exactly what you want from a high-performance motor. Even the smallest of cracks in the bore can lead to an impaired contour of the running surface, a condition that translates to engine oil leakage and catastrophic damage to the 4.0-liter twin-turbocharged V8.