Carbike360 comprehensive Aston Martin DB12 4.0-litre and Porsche Panamera G3 comparison based on the price, specification, fuel efficiency, features and more. Aston Martin DB12 4.0-litre comes with a price of ₹4.59 Cr and Porsche Panamera G3 is priced at ₹1.70 Cr. Aston Martin DB12 4.0-litre equipped with 5198 cc, 8 Cylinders In V Shape, DOHC engine whereas Porsche Panamera G3 has2894 cc, 6 Cylinders In V Shape, 4 Valves/Cylinder, DOHC