BMW 4 Series Gran Coupe (2017) is 11 mm (0.43 inch) higher, 328 kg (723 lbs) lighter and has 116 liters (4.10 ft3) bigger cargo space than Porsche Taycan (2020).
Porsche Taycan (2020) is 325 mm (12.80 inch) longer and 140 mm (5.51 inch) wider than BMW 4 Series Gran Coupe (2017).